*Does off-grid solar confuse you?* Check out my DIY friendly website for solar system packages and product recommendations, and so much more! www.mobile-solarpower.com *Join our DIY solar community* #1 largest solar forum on the internet for beginners and professionals alike: www.diysolarforum.com *Check out my Book* Best-selling and beginner-friendly guide to 12V off-grid solar! amzn.to/2Aj4dX4 If DIY is not for you, but you love solar and need an offgrid system, check out Tesla Energy! They will price out a system and get your house offgrid: ts.la/william57509 *My DIY Solar Equipment Recommendations (Constantly updated! Check here first):* 12V/48V Lithium Solar Batteries: www.mobile-solarpower.com/solar-batteries.html Complete Solar System Component Directory: www.mobile-solarpower.com/solarcomponents.html Complete 48V System Blueprint: www.mobile-solarpower.com/48v-complete-system-blueprint.html Plug-N-Play System Recommendations: www.mobile-solarpower.com/full-size-systems.html Complete "Add to Cart" 48V System Kits: www.mobile-solarpower.com/complete-48v-solar-kits.html DIY Friendly Air Conditioner/ Heat Pumps: www.mobile-solarpower.com/solar-friendly-air-conditioners.html *My Favorite Online Stores for DIY Solar Products:* *Signature Solar* Offgrid One-Stop-Shop. Best Value 48V LiFePO4, Victron and Offgrid Specific Heat Pumps: www.signaturesolar.com/?ref=h-cvbzfahsek *Current Connected* SOK, Victron, Mr.Cool Heatpumps and High Quality Components. Fantastic customer support: currentconnected.com/?ref=wp *Litime* My favorite 12V budget battery!: www.litime.com/?ref=XBIA62RFcalHns *Epoch Batteries* My favorite high-quality 12V battery: www.epochbatteries.com/products/12v-460ah-lifepo4-battery-ip67-heated-bluetooth-victron-comms?rfsn=7352625.50494d *Renogy* A classic 12V solar store that has been around for ages! DC to DC Chargers and more! renogy.sjv.io/n1VjXx *Rich Solar* Renogy's biggest competitor! Similar products, but at a better price: richsolar.com/?ref=h-cvbzfahsek *Battery Hookup* Cheap cell deals bit.ly/2mIxSqt 5% off code: diysolar *Contact Information:* I am NOT available for personal solar system consult! If you wish to contact me, this is my direct email: williamprowsediysolar@gmail.com Join the forum at diysolarforum.com/ if you wish to hang out with myself and others and talk about solar *FTC Disclosure Statement and Disclaimers:* Every video includes some form of paid promotion or sponsorship. Some links on this youtube channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these. My videos are for educational purposes only. Information is subject to change/update at any time. Electricity is DANGEROUS and can kill. Be smart and use common sense :) DIY Solar Power with Will Prowse is a participant in the Amazon Services LLC Associates Program, An affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com
Will you're the man. would you be willing to do a little consultation on skype or something and I'd pay you for your time? I'm looking to build a 600w 24v setup but have some questions. Let me know. Thanks!
What about batteties. Can I connect two different sized batteries together. Say a 400AH to two 200 AH batteries to create a usable 800 AHs? It’s a usable space issue
I have a bunch of questions. Can you please help me understand this a little better. I bought a eco share kit off Amazon. So what I did was use the 10 100watt panel's. I put 8 in series pareral. 90 volts. Then 2 in series pareral 40 volts. I have 2 reoenergy 12 v 200ah(20hr) sealed lead acid gel type hooked together as 24volt system. Also hAve a 3500w power inverter pure sine wave. My question is what would be your suggestion on a charge controller or controller 's??? Also have the reoenergy batt monitor. Can you please help? I can send pictures or anything that could help you help me. Thank you really like you videos but I think I'm just getting confused.
@@franciscoburgos787 The intros get ridiculous. Way too many people describe their backstory and decision process that led them to the video content as if anyone cares. Others film their entire installs with minimal editing. It's tedious.
Man, I wanted to drop you a comment. I'm an electrician by trade, but that in know means I'm a DC, battery, solar expert. (I love how my employers thinks that I should know how to work on Fire Alarm systems because I'm an electrician, but I digress). Due to my RV, I started mucking around with Lifepo4 batteries. I started researching this that and the other thing and before you know it, I'm down the proverbial rabbit hole. Understanding this stuff is like a whole other branch of the Electrical field. It's like going to an oncologist to deliver a baby. I've watched hours and hours and hours of videos and read loads of stuff. And I can honestly say that your content is by far the single best resource on the internet for learning about this particular topic. Sure, there are other really good recourses. But your content is the most accessible to the widest range of folks. There's virtually no bullshit. After watching at least 100 of your videos, I seek you out when ever I have questions. I even started creating curated play lists of your videos discussing different things so I can get to them quickly. I think I probably speak for the community when I say I really appreciate what you're doing and what you're providing.
Here's what I like... no fluff... you edit out the ums and uhs... your videos are VERY info packed and to the point. I put together a controller/inverter system in my trailer based almost exactly on one of your recent videos. In fact, I took a screen shot of the setup on the video and worked off of that visual. Step by step. Easy to understand. Works like a charm. You talk fast, but I can always rewind. Thanks for what you do. Great resource for learning. And yeah, I bought your book, too.
" I put together a controller/inverter system in my trailer based almost exactly on one of your recent videos. In fact, I took a screen shot of the setup on the video " Can you reference that video please. I'm interested in doing the same thing
I've been running a 60 litre beer camping fridge/freezer off a four x six volt Trojan 110ah bank for 11 years now, without a hitch. The battery's are fed off two 123 watt Sony (Japan) panels through a 30amp Morningstar regulator. Every component is at least 11 years old. The battery's like a drink of filtered water often (especially in summer), and a wet clean with baking soda and water twice a year. I'm always amazed at the longevity of those bloody heavy Trojan Fork Truck battery's. Surprised me years ago. For a simple dedicated fixed system like this, 24 volts is the way to go. Long 6mm copper feed down from the roof is acceptable, because of the voltage, the little compressor fridge motor works much better off the higher voltage than it did when I ran it on a boat at 12 volts. I've also got a Latronics (Aussie quality) 24V inverter that can back up my meat freezer, and the fridge upstairs, in the rare event of a mains outage here. I set this up, with battery's on a bench, everything else up on the wall, in 2010, and it's been faultless. Beers are always cold, and I don't have to pay for another refrigerator. 🍻
March 2024 i just came across your channel. I'm building a "johnny cash" portable power station (one piece at a time). I have two marine deep cycle SLA batteries so this video is very helpful to my project. I'm weighing the pros and cons of 12 vs 24 volts. Thank you for good straightforward content, well explained without a bunch of non essential intros or other junk.
Hands down the best 12vs24 volt comparison I've ever heard, and that's saying a lot given my near 30 years experience of using solar and talking with many experts in the field. Perhaps in your freetime you could get your MD so I could get this kind of intelligent response, which is sorely lacking from my doctors! You are impressive young man! So glad to see you sharpening the content on your channel. Aloha
Dr's are (now) taught by gov controlled schools (rothchilds started the AMA to expunge homeopathic Dr's in lieu of pharma-friendly medicine, since their industry waste - oil byproducts - are used to make bio-similar chemicals that mimmick biological/natural remedies. Think aspirin = acetylsalicylic acid (artificial) = treebark (nature). Today's Doctors do not think... (just try and get one to diagnose outside of the prescribed literature!). They simply regurgitate what the pharma Co's are selling. Solar has yet to be infected by government control. Therefore, guys like this are still allowed sans scrutiny... until the gov figures out a way to monetize it or control people with it. Bastages every one of them!
I knew nothing about solar panels and relations between amps and volts before I found your channel. I think I will watch all of your videos. Thank you from Estonia!
So I have been off-grid now for 6 years. I spent a lot of money doing trial and error setups. I had the basics down in 6 years, but all was self learned. No mentors, no neighbors to learn from, and no TH-cam videos. I have since started watching all of your videos and have tripled my knowledge of off-grid solar setups in 2 days. For example, I have 8 12v agm batteries wired in parallel. I have wondered why I go through battery banks in a year or 2. I always thought that if you ran the batteries down to the inverter’s low voltage alarm it would be ok. That being said, last winter was one of the rainiest winter seasons in N. GA, so obviously I ran my batteries down to 10.5v and had no idea it was damaging them beyond repair. TH-cam is amazing and thanks so much for your videos.
I have watched several of your videos and every time I learn an amazing amount of information. Most things I usually walk away with more questions than answers but when I watch your videos I am filled with all kinds of info and although it is overwhelming later on when I start to learn more I realize how much information has eventually sunk in so thank you for all of your content because it has helped me boost my confidence in ways where other videos and things usually bring me down
Wow, you are a very impressive young man, intelligent, articulate and no BS. To the point. Must pause to take in some of your points but I would rather pause than have to listen to a bunch of unimportant stuff. Thank you.
After watching this video a handful of times, I finally committed and pulled the trigger on doing the 24v system. I was really having trouble making that decision. Two components left (but coming in the mail shortly) and I'll be up and running.... Thanks mainly to Will. Jehu Garcia's channel helped me build the batteries. These two channels are critical to what I'm doing. Y'all are great! Thanks Will!
I just bought a 99 Dodge Coach House. I am going to get solar (already has two extra batteries) and a composting/cassette toilet. I. Have. No. Clue. I'm going to binge watch your videos. Then I can have an intelligent conversation with someone. Thank you for sharing your knowledge!
5 years old but still so relevant today. My story is i built Wills 12v system and it has been working well but my 100/20 Victron is limiting me to 290 Watts Solar. I have two 12v Lithium batteries in Parallel so i could use these in series to boost the system to 24v. Cost wise i would need to get a new Inverter and also a Buck converter. Just a pity i didn't know enough a few months ago when i started this solar addiction. We live and learn i guess.
That's excellent information and dead on. 25 years ago I started my off grid home with 12 volt but switched to 24 because my loads increased to the point of killing batteries. Now I have 2000 watts of solar with 24 volt pannels and two 40 amp chargers and 1100 amp hr battery and a 2500 watt pure sine wave outback inverter. I run a forced air heater and full size fridge,dishwasher,full size washing machine and dryer and three flat screens krueg coffee maker in a 1400 sq ft three bedroom home. Never have to worry about a power outage. Havent seen a electric bill in over 25 years.
You convinced me to go 24v in my skoolie a while back, just happened to be rewatching this video. Great info. I recommend your videos to anyone I come across that asks about solar setups and batteries. Keep it up!
I'm trying to make this decision for my skoolie right now. My system is 400W solar with 400amp-hr battery bank. It's kind of in the middle of small/medium system according to Will. Any recommendation on the 24v? sounds like it worked out for you which is great.
You just do not put out bad videos. Period. I’ve got a 48V setup for my off-grid property and I’ll wait patiently until you put out a video talking specifically about 48V things 😉👍🏼
Fabulous. This is guy is great - straight to camera, straight with his words, transferable knowledge. No fluffy stuff. This is the kinda stuff that keeps the world turning: not instagramy, fancy graphics or political crap.
Thank you for being so clear and upfront with your information. Same with your website. Everyone else holds onto their knowledge like they’re playing poker and give vague and confusion information that follows no linear thought process. Keep it up!
Been banging my head against the wall looking for digestible solar info surrounding my RV. This video was very easy to understand and helped guide me in the right direction! Thank you!!
I am converting a truck (8.5 tonne) into a tiny home. so this was super interesting. I was hell bent on everything to be 12v - but now I am definitely going to the 24v. Thank you so much.
@@bladenrexroth2555 most junk yards I've been to only charge the core cost for an alternator. Pull one from and semi or bus ect. If you're gonna pay 200 you might as well pay 300 for a new one.
Dude. I have a perfectly fine running 1993 Bounder 28T. All my systems work, The interior is in great shape. Runs like a champ. Watching your videos makes me want to rip it all out and make it so much more efficient. Todays efficiency/power/usage/systems are so different than '93. Back then they didn't have all this knowledge and they just built it to "spec". That's ok though, when my systems *do* fail, I'll be ready. Thanks Will!!
Hey Will we need an updated video of this, showing 12,24,36,48v battery systems and all benifits of cables sizes needed and charge controllers, people look up to you on TH-cam to provided detailed videos for solar setup and how safe you keep people from making dangerous setups, you are leading the way for off grid solar which makes up of 86% of all residential solar users, also you need more videos showing more information on solar panels :) keep up the good work happy 4th of July
@@EOFugate In a 170" wheel base sprinter. I have 800 watts on the roof and a plug in the bottom so i can hook to a large array on my property so i can use a total of 4,000 watts. I can run the water pump on my well, air conditioner and washer/dryer(110 volt) at the same time without worries. Outback 80 amp charge controller and Outback gvfx3648 inverter. 48 volt lithium batteries from Chevy Volt. Bought on ebay. 2 years and no issues. Love it. Really want those Tesla batteries though.
@@offgridphilosophy7959 I'm thinking of doing very similar to your system but starting with the Tesla batteries you desire. I'm doing a Schoolie. 40 Foot School Bus home. Specifically a Lion Company C Lion Electric MFSAB School Bus. Your comment about 48 is what's giving me hope. I have 2 years to prepare so I'm learning and studying all the different aspects. What calls you to Tesla batteries? What kind of Tesla batteries are you considering?
You're wickedly smart when it comes to solar knowledge, I wish you were my neighbor!!! Just bought my first REC 310w panel and trying to fit it with a charge controller.
You make learning about this stuff enjoyable. My dad loves chatting about his electrical work but I am not into it. But now I can watch at my own pace and be able to chat with him haha Thanks!
Skyph> BUT if you own your own place you CAN use solar to shave your electric bill. A small ‘system’ that you can buy affordable components to assemble can be set up to handle a portion of your steady electric usage and keep heavy loads like electric range, electric clothes dryer, etc. on the utility supply. These lower ‘constant’ loads like a refrigerator use a surprising amount of electricity over 24hours and a small diy solar outfit can supply most or all of this load while affording as little as 12months ROI. It’s worth it. The big national ‘installed’ solar suppliers with their grid-tie systems at huge prices like $30,000 or $40,000 that are currently popular are often 15+ years ROI and therefore, in my opinion, not a good investment. This Will Prowse fellow has some interesting videos on small solar using transfer switches etc which show how this is possible. Even 200W of panel can cover 60Ah / 720Wh in good sun without much trouble in my less-than-ideal area.
@@fishhuntadventure I am a total rookie at this stuff but you are describing exactly what l am looking for. Still being connected to the grid for bigger items and a solar system for everything else, it would help lower the monthly power bill plus allow all the basics to work during a power outage. Hoping l can learn enough to design and build something like that.
I'm setting up my first 12v system and I pretty much have everything and ready to install. I like your channel out of them all because you go into detail with everything and I have learnt a lot from you. Will be building a small 24v house in the next 2 years so I will watch anything you have in 24v. Thanks for all the good knowledge.
If you intend to build off grid or even grid tied house! Honestly forget all this babbling. Make your life easier and cheaper in the long run... Highest voltage solar system you can comfortably afford. And step up the system to what is regular, in your neck of the woods! Meaning 120v or 240v inverter... Your appliances will be way cheaper. Wiring way cheaper and so on! Entry level installation on 12V or 24V are relatively cheap and easy. Really nice for a cabin, tiny house and such! When the term "house" enter the game. It all change! ;-)
@@crpth1 thanks for the info. I already set up my camper with 12v and 240v with 400ah battery storage and now going to build a tiny home in my back yard on 24v.
Boy, am I ever learning a lot. I have your book now and am watching all your vids that I can find. This video showed me I need 24 volt set up, not 12. I was going to go with Lithium but after watching video after video I may just go with lead acid at 24. (Class C motor home). Now I have to figure exactly what solar wattage to put on top. This project starts in 5 weeks so you are helping me move along nicely. (I hope)
Another excellent presentation by Will. Worked in the electronics/electrical industry as a professional engineer here in the UK for 40 years and had no idea where to start with solar and Lithium batteries for my minibus to camper conversion. As others have said no waffle or fluff and to the point with detailed technical content. Going with 24V system and wished I could have brought the SOK batteries through Wills link but only ship on that to USA so had to go direct to get shipping to UK. Mentioned got their details from Will's presentations so he might get something from them?
Very nice. You have covered a lot of topics in a short video. Higher voltage is the way to go. One topic nobody covers is the losses across each connection and the copper-loss along each DC cable. A really excellent connection resistance is 0.1 Ohms; a tenth of an Ohm. If you have 10 amps flowing across that connection you lose 1 Volt. Multiply that by the number of connections. Ouch.
WA9KZY - (I'm leaning, so just asking) - is a 10th really a representative loss figure?? (because if it is, that's something!) looking forward to your wisdom
The alternator overheating is solved by a External Regulator monitoring the temp of the alternator and adjusting amp output accordingly. Hit the major points perfectly!
Thank you so much, for this great video, I had NO idea, that there were so many differences between 12v & 24v systems. After watching this, I will definitely be going 24v.
You Rock!!! I have never felt so infantile regarding this subject. Just when thought I understood it and I normally watch videos primarily for additional thoughts and perspectives but then I have now watched several of your videos and it is as if you are speaking a foreign language (one that I do not speak). Your videos are well put together and for those folks with serious experience or degrees, I am sure they LOVE it. I pray that in 2 or 3 more lifetimes I will be able to understand your videos...seriously, great videos but I have never felt so ignorant...lol
Will, Once again you have answered all my questions before I got to ask them. Every time I think I might need to do something I look to your video's on how to and BAM it's right before me. Thank you for all of your simple explanations. You are one of a kind!
I have learned so much watching the last 7 videos and I am going to keep on going! Great job explaining! I want to do my own house system.... after I do a beginner system.
Thank you Will. As PGE shuts off power at their will my interest is more than mere hobby. Please do a video on building a 48 volt system for a home. Many thanks.
I hear you Sister. California politics are very strange to me. PG&E has equipment that starts fires, many people lose homes; so the government sues PG&E for the damages. PG&E says "ok, we do not want to get sued so we will shut down power if the risk for fire increases", people get mad and government sues for no power. I just don't get it, but either way, you certainly need to protect yourself from any power loss regardless of the reason. I live in the Mid-West and except for the rare summer heavy thunderstorm; our power is fairly safe and very clean too. I use solar for my way off grid cabin. I have a back up solar system at my house "just in case SHTF". I have learned how to reduce electric consumption via LED and other power saving methods. Thanks Will for all your contributions to the cause.
Great video, but to carry twice the DC current, you need twice the copper area which means that the copper only needs to be square root of two (~1.41) times as thick. But your point is correct in that you do need twice the copper, so it is roughly twice as expensive...
I nominate Will Prowse for the Nobel Peace Prize. Why? Because he has given me peace of mind with his explanations. How many people do you know that you can say that about. You da man, Will.....smile. Just bought your book.
Watched again. Thanks for the advice. Pro electrician here, but we work with ac. Industrial stuff. Anyway long time subscription to your channel and must say your teaching technique is spot on. Learning much from you. Ya Wire is the biggest expense in most projects. $4.35/lb. Copper miner. Wohoo keeps me employed. Thanks again.
I am 13 years old, and im calculating how much money it would cost and how much would be saved because my father wants to invest in pannels if they are effective and I don't understand why certain COMPANIES won't LET ME LOOK AT THE PRICE OF PARTS WITHOUT AN ACCOUNT... And out of the probably 1 1/2 hours of videos that I have watched, this one helped most. it answered every single question I have had. the links existed unlike other channels that won't be mentioned even though this is two years old it is extremely helpful Overall 12/10 thank you
Definitely would like to see a 24V vs 48V comparison. SV Dauntless did a massive 53KW 48V system and I wonder how the wiring costs would have been different if they did it in 24V?
So if I have a big bus going to run 24 what is the best battery for dollar I was leaning towards Tesla batteries room is not a issue I have a flat nose skoolie pusher? Is that my best option I’m aiming for 500amp hours run ac sometimes?
@@cliffschatz6918 Wow that's 12 kWh. I have 10.5 kWh Pylontech for the off grid house and that's the right size for me. I like those 48V rack mount jobs but it's obviously not DIY.
I can hear him all day 🤣, for moments he talk like a little kid n laugh....love it..."a mix of brain n innocence" ....thanks to talk so clear that eve me can understand!
We've used a 24v system in our off grid house and other buildings for almost 10 years, and it's worked great. We're in the mountains in Colorado, so don't need air conditioning, but we use a regular 120v fridge, chest freezer, washing machine, household vacuum cleaner, etc.. We cook and heat water with propane, and heat with wood. I take care of my flooded lead batteries, and the initial set of golf carts lasted 6+ years. The set of L16s should last 15 years or so. Lithium was still out of our price range, or we would have gone that route. Nice video.
On average I have never got more than 6 years on the L-16's with trying to not discharge them more than 50%. Based on Will's videos I have changed to Lithium Iron Phosphate batteries and love how the voltage stays pretty flat during discharge. I have never had them go below 12.8 volts.
This video was deeply informative with regard to the decision that I’ve made that it was definitely going to be a 24 V system as opposed to a terrible system. But now I’m questioning whether I want to bump up to 48 V when it comes to my PV array. My system is being designed around an off grid tiny home on wheels that is essentially a whisper booth. All of the purposes and functions of a modern home hot water sewage treatment etc. The PV array is the primary energy input. I will also be putting in some additional wind generating power. Once the system is under way.
I'm an electrical engineer and electronics technician and I've just started a bus conversion to motorhome. I went with a 24 volt off-grid system right from the start. It just makes sense as the bus runs on 24 volts. Using a 24 V off-grid system means I can charge those batteries from the bus alternator when under way using an auto-connect transfer switch. It's not strictly necessary as I have 2 kW of solar on the roof which is more than enough but it's easy enough to implement and there may be times when there isn't much sun so being able to do this is a bonus. The electric toilet has a 24 V motor, the inverter is 24 V as is the fridge. I'll use a converter to drop to 12 V for the LED lighting (the 24 V LED lights weren't available in a style I liked) and to run things like the CB radios etc.
Good info. Everything you said was important information. I was contemplating what size system to get and I was leaning towards a 24 volt but still not sure. After watching this video I have decided for sure to get a 24 volt system. What sold me is the part where a 48 volt system can be deadly and 24 volts is not. Its nice to have the luxury of power, and the safety of a low voltage system. Plus I plan to do a medium size system.
I agree, as a DIY'er I am not a trained electrician, I am in my 60o's and one good jolt...well who knows not worth the risk I am sold on 24 volt for my cabin.
If you have over 2500 -3000 watts. It's better to go 24v or 48v, it doesn't hurt to get a backup inverter either, I have a 5kw inverter, 24v with 42v oc panels, I'm planning on adding about 2500watt plus, in panels, due to distance, I will be running about 90v oc. I have a smaller 12v battery bank, for my 12v lighting, over 100ah, LiFePo4, I also have backup equipment, I'm building a DC generator to to charge my backup lead acid Bank. And have a charger to charge my lithium bank from it , in an emergency, it can do 150 amps @ 30 volts! I hope to eventually go a week without sun, but panels the shipping is costly!!
Thanks, Will, for this no nonsense explanation. We have our foundation and pole in for our off-grid array. We are shut down until spring because of access only by snow machine. If I keep watching your awesome videos I will at least know what my solar contractor is talking about and maybe do most of the install myself ! Happy Holidays!
I have gained so much knowledge listening to this expert. I consider myself capable but electricity has never been my experienced skill or trade. I have wired my own on-grid shop did a good job. But electricity has many different layers. And the Automotive/RV side of electricity is beyond my skill level. However I am a quick learner and Will Prowse has helped me gain enough knowledge to start making some decisions about my 40 ft 5th wheel; that I want a 100% offgrid/unplugged solar powered electricity system. And with this RV I am starting from scratch, as it has zero in the way of integration of the 120 vlt AC connected/plugged in - RV internal system, but the 12volt DC system is tiny, with the waterpump, refrigerator, water heater and exterior RV lights being the only draws. I have no way to charge my 2 house batteries other than doing it myself with my own battery charger outside. My roof is large enough that I feel I could design and have a solar system that will not leave me wanting for more power. I am a usual sun worshiper; in that I travel to mild weather, with lots of local Sunshine. So I will have the ability, I just now need more knowledge to move forward. Watching these videos surely does help me make better and wise decisions. This solar system that I want will be my home on wheels, I am fully intending to live full time in my RV.
I’d love to hear you explain the pros/cons of using a 24v battery (50ah) vs two 12v batteries in series (50ah). Is there a preference? BB sells both so just curious. Thanks Will!
I have a 12-volt system, Mark 2 charge controller $100. Two T105's $100 each. 225 amp hour. I got a deal on a couple of panels $400 for two $100 in wiring and fifty bucks for an inverter. One brand new 1500 watt generator, $100. Champion model. And a 950 Watt battery charger $180. Total of 1080 and I've used that system for 10 years. It's all still working.
Great video, as usual! I just joined your forum so that I can study further the best system and components for my needs! I'm researching a semi-portable minimal system to run a couple of refrigerators and maybe a couple of lights and fans for post hurricane survival when the grid goes down! I appreciate all your excellently communicated recommendations!
highly technical without images for visual illustrations. Nevertheless very educative. Your confidence levels are enough the convince me. Thank you so much for this video
Back when my friend was installing solar panels on the roof, of a bus, it was a sunny day, and he forgot to cover the solar panel, when he grabbed the wires to connect them he got a slight shock, but it was enough to make him loose his balance, and he fell off the roof and broke his wrist😆. GREAT VIDEO Thanks William Orange county, ca.
Moral of the story: Don't land on your wrist! LOL 😂 Jokes apart, as a young (and stupid) teenager I temporarily removed an electric wall heater (230V) from the wall. "Clever mind" taught no need to switch if off! I'll be just fine... Well. I was fine until, for a fraction of a second, I touched both wires. I was crouched doing the job. My legs spring so violently that I, literally, flew across the room! And upon landing, crushed the door of a cabinet on the opposing side of the room with my back! Only than I turned OFF the breaker switch... ;-) Curiously! By now my hair and beard are white! AND I always turn the breaker OFF when messing with power! LOL 😂
I love all your videos. I'm glad this one came up in the suggestions though because I was wondering why my battery wasn't getting a charge. I neglected to realize that I had 12v panels in parallel with a 24v battery. I have now put the panels in series/parallel, hopefully this fixes my problem.
Samlex SDC-23 24v to 12v regulator here. I run my network and servers on a 24v system here. Battery bank is floated off shore power but solar backed. Just to help with power cost but mainly power outages. 24V bus alternators were generally oil cooled to keep from them from burning out under full constant load. There are air cooled versions available as well.
Very informative and good comparison of 12v and 24v systems: It is better to categorise, as a Professional Engineer my options be as follow: 1-Small system 500W to 1200W 12V is better 2-Medium System >1200W to 2000W, 24V is better choice. PERSONALLY I prefer it for house use, safe and economical. 3-Large Size System > 3000KW and >5000W, 48V be used.
Wow ! what power ! yea, ur smooth, consistent burst of knowledge, { really long one :) } without the umms and aaans did make me pause, rewind, and scramble for my pen and paper hehehe.... Truly amazing is the way you pour out your knowledge with such ease. Yes, as another viewer commented tht ur video works like a charm, i can not agree any less ! Thankyou Tonns junior ! :) love your unassuming manner of sharing. Keep it up, u r Blessed ! i will be getting your Book, Thankyou for sharing ... take care ...
I work in the cell phone tower industry and we are switching everything over to -48V DC systems up to 1200 amps. It took a while getting used to the negative polarity system and hooking the + terminals to earth. You will get a massive amount of sparks when screw that up. It is no joke even compared to 120/240v AC systems.
In my old boat it had twin engines, with a 12v alternator and battery bank on one engine. The other engine had a 36v alternator and battery bank. 36 for starting the engines, and 12v for all the house equipment, electronics, etc. the down side is 2 battery banks, and you have to be careful not to start the 12V side first and possibly drain the battery so you can't start the 36v side, which charges the starting batteries. Up side, good cranking amps with 36v, easy setup for 12v house system.
I switched from 12 to 24 due to many recommendations about the efficiency increase, but the step down transformer needed to run 12v appliances used more energy than what I was gaining by going to 24v. So there's that...
Maybe im wrong but dont think the benefits of 24v he mentioned were so much about gaining voltage as opposed to reliability and cost savings in long run by having your equipment last longer without the need to replace it amd initial expense.
I'm half off grid with mine. I just bought the stuff had no idea what I was doing and I essentially power our entertainment system as well as a few other things. It halves the electric bill. Mine is 24v mini system 😁 with a converter that I plug extension cables into for my ac needs.
Thanks again, Will! I am gearing up to install a solar power system in my van to power some lighting and my laptop. This video answeres the question whether to go with a 12v or 24v system. BTW my OCD compels me to ask that you fix that twisted slat in the window. Hahaha Just kidding
@@carrtb Will did a Live stream last night from his bedroom (too much echo in lab). I had to sit through an excellent Live stream whilst looking at the lumpy bed covers. LOL
This video got so mutch info I keep watching it over and over to let it all sink in since I'm new to SOLAR THANKS ALOT WILL AND IM GONNA BUY THAT BOOK SO I CAN SOUND LIKE YOU WHEN I TALK ABOUT THIS STUFF LOL
Great video! Can a system be too big in a van? I want to set up my van as a mobile power vehicle, with the capability of powering my house in case it’s needed. How big with max aH and max volts can I go (safely)?
Your intentions might be noble. But absolutely senseless! Some common sense is very useful on those occasions! So you want solar power on your van, makes all sense. ;-) You want (a lot of) power in your house... Fed from the van, doesn't make any sense! Your house benefit from the area, the fixed condition, weight is no major hassle, makes production and consumption close to each other, etc. etc. So why feed it from a moving vehicle, which would be overloaded with unnecessary crap. AND for starters lack the much needed area for panels. And the volume and load capacity for batteries and such! I find hard to believe anyone within a sanity option would consider haul all that. Back and forth on a permanent basis! Don't you intend to use your van? I mean drive it around, use it for what it's built for loading stuff, etc?! With this said, the van roof covered with panels and an inverter. With a simple extension cord could provide to the house in an emergency. A boost if you will. But the main core for the house should be in the HOUSE... Cheaper, simpler, and you don't have to drive around all that!!! ;-) BTW I do have solar on my van. ;-)
Late response but may help others. Click on the link in video description. Scroll down to Other Blueprints - Solar Trailer. This gives a good example of equipment needed and the space required. Will built the system inside a enclosed V Nose trailer.
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Will you're the man. would you be willing to do a little consultation on skype or something and I'd pay you for your time? I'm looking to build a 600w 24v setup but have some questions. Let me know. Thanks!
What about batteties. Can I connect two different sized batteries together. Say a 400AH to two 200 AH batteries to create a usable 800 AHs? It’s a usable space issue
sorry about the earlier comment, I know you don't do consultations. o7
I have a bunch of questions. Can you please help me understand this a little better. I bought a eco share kit off Amazon. So what I did was use the 10 100watt panel's. I put 8 in series pareral. 90 volts. Then 2 in series pareral 40 volts. I have 2 reoenergy 12 v 200ah(20hr) sealed lead acid gel type hooked together as 24volt system. Also hAve a 3500w power inverter pure sine wave. My question is what would be your suggestion on a charge controller or controller 's??? Also have the reoenergy batt monitor. Can you please help? I can send pictures or anything that could help you help me. Thank you really like you videos but I think I'm just getting confused.
Are there 24V battery chargers for generators
This is why this guy makes the best vids: no crappy half hour intro, no extra BS, just facts, delivered logically.
Yes but doesnt answer any questions.
@@dragally1 That's true. I can't deny that.
Facts (my arse). Some are just his opinions and some of his statements are wrong.
I don't like the long intros either. seems like some folks are making home videos with their dogs and kids in the intro.
@@franciscoburgos787 The intros get ridiculous. Way too many people describe their backstory and decision process that led them to the video content as if anyone cares. Others film their entire installs with minimal editing. It's tedious.
Man, I wanted to drop you a comment. I'm an electrician by trade, but that in know means I'm a DC, battery, solar expert. (I love how my employers thinks that I should know how to work on Fire Alarm systems because I'm an electrician, but I digress). Due to my RV, I started mucking around with Lifepo4 batteries. I started researching this that and the other thing and before you know it, I'm down the proverbial rabbit hole. Understanding this stuff is like a whole other branch of the Electrical field. It's like going to an oncologist to deliver a baby.
I've watched hours and hours and hours of videos and read loads of stuff. And I can honestly say that your content is by far the single best resource on the internet for learning about this particular topic. Sure, there are other really good recourses. But your content is the most accessible to the widest range of folks. There's virtually no bullshit. After watching at least 100 of your videos, I seek you out when ever I have questions. I even started creating curated play lists of your videos discussing different things so I can get to them quickly. I think I probably speak for the community when I say I really appreciate what you're doing and what you're providing.
Heck the biggest compliment I have seen is other videos say they use him as a reference information! Also he hasn't
aged at all.
Here's what I like... no fluff... you edit out the ums and uhs... your videos are VERY info packed and to the point. I put together a controller/inverter system in my trailer based almost exactly on one of your recent videos. In fact, I took a screen shot of the setup on the video and worked off of that visual. Step by step. Easy to understand. Works like a charm. You talk fast, but I can always rewind. Thanks for what you do. Great resource for learning. And yeah, I bought your book, too.
This comment made my day. I'm glad you like the videos!
This comment is exactly how I feel, you are spot on Mr. Prowse . AWSOME information for anybody looking to build solar.
@@WillProwse 😊
I like that he talks fast. I can grab more info quicker and like you're saying you can rewind if need be.
" I put together a controller/inverter system in my trailer based almost exactly on one of your recent videos. In fact, I took a screen shot of the setup on the video " Can you reference that video please. I'm interested in doing the same thing
On behalf of all Africans, we love you man, your videos are straight forward
I've been running a 60 litre beer camping fridge/freezer off a four x six volt Trojan 110ah bank for 11 years now, without a hitch. The battery's are fed off two 123 watt Sony (Japan) panels through a 30amp Morningstar regulator. Every component is at least 11 years old. The battery's like a drink of filtered water often (especially in summer), and a wet clean with baking soda and water twice a year. I'm always amazed at the longevity of those bloody heavy Trojan Fork Truck battery's. Surprised me years ago.
For a simple dedicated fixed system like this, 24 volts is the way to go. Long 6mm copper feed down from the roof is acceptable, because of the voltage, the little compressor fridge motor works much better off the higher voltage than it did when I ran it on a boat at 12 volts.
I've also got a Latronics (Aussie quality) 24V inverter that can back up my meat freezer, and the fridge upstairs, in the rare event of a mains outage here.
I set this up, with battery's on a bench, everything else up on the wall, in 2010, and it's been faultless. Beers are always cold, and I don't have to pay for another refrigerator. 🍻
March 2024 i just came across your channel. I'm building a "johnny cash" portable power station (one piece at a time). I have two marine deep cycle SLA batteries so this video is very helpful to my project. I'm weighing the pros and cons of 12 vs 24 volts. Thank you for good straightforward content, well explained without a bunch of non essential intros or other junk.
I like the name of your portable power station. Lol 😂 "Johnny Cash"😂
Hands down the best 12vs24 volt comparison I've ever heard, and that's saying a lot given my near 30 years experience of using solar and talking with many experts in the field. Perhaps in your freetime you could get your MD so I could get this kind of intelligent response, which is sorely lacking from my doctors! You are impressive young man! So glad to see you sharpening the content on your channel. Aloha
what he said Will!!! - (but you don't need the MD ;) )
Amen
Can I contact please
Would love for you to build a system for my 84 mc9
Dr's are (now) taught by gov controlled schools (rothchilds started the AMA to expunge homeopathic Dr's in lieu of pharma-friendly medicine, since their industry waste - oil byproducts - are used to make bio-similar chemicals that mimmick biological/natural remedies. Think aspirin = acetylsalicylic acid (artificial) = treebark (nature).
Today's Doctors do not think... (just try and get one to diagnose outside of the prescribed literature!). They simply regurgitate what the pharma Co's are selling.
Solar has yet to be infected by government control. Therefore, guys like this are still allowed sans scrutiny... until the gov figures out a way to monetize it or control people with it.
Bastages every one of them!
I knew nothing about solar panels and relations between amps and volts before I found your channel. I think I will watch all of your videos. Thank you from Estonia!
So I have been off-grid now for 6 years. I spent a lot of money doing trial and error setups. I had the basics down in 6 years, but all was self learned. No mentors, no neighbors to learn from, and no TH-cam videos. I have since started watching all of your videos and have tripled my knowledge of off-grid solar setups in 2 days. For example, I have 8 12v agm batteries wired in parallel. I have wondered why I go through battery banks in a year or 2. I always thought that if you ran the batteries down to the inverter’s low voltage alarm it would be ok. That being said, last winter was one of the rainiest winter seasons in N. GA, so obviously I ran my batteries down to 10.5v and had no idea it was damaging them beyond repair. TH-cam is amazing and thanks so much for your videos.
Thankyou for sharing candidly, ur experiences ... this also adds value to the original vid ... thanku
I've been off grid for 6 years as well and can echo your statement.
9878
I have watched several of your videos and every time I learn an amazing amount of information. Most things I usually walk away with more questions than answers but when I watch your videos I am filled with all kinds of info and although it is overwhelming later on when I start to learn more I realize how much information has eventually sunk in so thank you for all of your content because it has helped me boost my confidence in ways where other videos and things usually bring me down
Wow, you are a very impressive young man, intelligent, articulate and no BS.
To the point.
Must pause to take in some of your points but I would rather pause than have to listen to a bunch of unimportant stuff.
Thank you.
After watching this video a handful of times, I finally committed and pulled the trigger on doing the 24v system. I was really having trouble making that decision. Two components left (but coming in the mail shortly) and I'll be up and running.... Thanks mainly to Will. Jehu Garcia's channel helped me build the batteries. These two channels are critical to what I'm doing. Y'all are great! Thanks Will!
I just bought a 99 Dodge Coach House. I am going to get solar (already has two extra batteries) and a composting/cassette toilet.
I. Have. No. Clue.
I'm going to binge watch your videos. Then I can have an intelligent conversation with someone. Thank you for sharing your knowledge!
5 years old but still so relevant today. My story is i built Wills 12v system and it has been working well but my 100/20 Victron is limiting me to 290 Watts Solar. I have two 12v Lithium batteries in Parallel so i could use these in series to boost the system to 24v. Cost wise i would need to get a new Inverter and also a Buck converter. Just a pity i didn't know enough a few months ago when i started this solar addiction. We live and learn i guess.
That's excellent information and dead on. 25 years ago I started my off grid home with 12 volt but switched to 24 because my loads increased to the point of killing batteries. Now I have 2000 watts of solar with 24 volt pannels and two 40 amp chargers and 1100 amp hr battery and a 2500 watt pure sine wave outback inverter. I run a forced air heater and full size fridge,dishwasher,full size washing machine and dryer and three flat screens krueg coffee maker in a 1400 sq ft three bedroom home. Never have to worry about a power outage. Havent seen a electric bill in over 25 years.
Any way to see the 24v set up? I’m looking to do the same but am fairly new to solar
You convinced me to go 24v in my skoolie a while back, just happened to be rewatching this video. Great info. I recommend your videos to anyone I come across that asks about solar setups and batteries. Keep it up!
Do you have your set up so your alternator charges your batteries as well?
I'm trying to make this decision for my skoolie right now. My system is 400W solar with 400amp-hr battery bank. It's kind of in the middle of small/medium system according to Will. Any recommendation on the 24v? sounds like it worked out for you which is great.
You just do not put out bad videos. Period. I’ve got a 48V setup for my off-grid property and I’ll wait patiently until you put out a video talking specifically about 48V things 😉👍🏼
I just changed my 12 volt system to 24 volt system watching your video. Wow! What a difference! Thank you!
You inspired me to go live full-time in an RV. It's gonna happen within the next few years and I can't be more excited. You're awesome!
Fabulous. This is guy is great - straight to camera, straight with his words, transferable knowledge. No fluffy stuff. This is the kinda stuff that keeps the world turning: not instagramy, fancy graphics or political crap.
Thank you for being so clear and upfront with your information. Same with your website. Everyone else holds onto their knowledge like they’re playing poker and give vague and confusion information that follows no linear thought process.
Keep it up!
Been banging my head against the wall looking for digestible solar info surrounding my RV. This video was very easy to understand and helped guide me in the right direction! Thank you!!
Bang'N Your Head Can Cause😮 Future ALzheimer.
It's great to find someone who obviously knows exactly what he's talking about. Thanks for the expert advice, clarified everything for me.
I am converting a truck (8.5 tonne) into a tiny home. so this was super interesting. I was hell bent on everything to be 12v - but now I am definitely going to the 24v. Thank you so much.
By the way 24v is a common voltage for buses, semis, and tractors etc. You could easily source an alternator from there for a dual alternator setup
I agree! I hope this could be an alternative solution.❤💥💯✍
Find used military alternators for under $200
@@bladenrexroth2555 most junk yards I've been to only charge the core cost for an alternator. Pull one from and semi or bus ect. If you're gonna pay 200 you might as well pay 300 for a new one.
@@alec4672 a reconditioned military surplus alternator? $200 is the happy medium between junk and brand new.
And Aircraft .
You are more informative then the 3 top page search results who were written by someone who didn’t know what he was talking. Great video
Dude. I have a perfectly fine running 1993 Bounder 28T. All my systems work, The interior is in great shape. Runs like a champ. Watching your videos makes me want to rip it all out and make it so much more efficient. Todays efficiency/power/usage/systems are so different than '93. Back then they didn't have all this knowledge and they just built it to "spec". That's ok though, when my systems *do* fail, I'll be ready. Thanks Will!!
Fugate University = I have a '90 Bounder that is all set up to live in with solar.. you can check out how I did it on my channel..
I had a 28T Fleetwood Southwind. The 28 = feet and T = I'm guessing is Two beds in the back.
Hey Will we need an updated video of this, showing 12,24,36,48v battery systems and all benifits of cables sizes needed and charge controllers, people look up to you on TH-cam to provided detailed videos for solar setup and how safe you keep people from making dangerous setups, you are leading the way for off grid solar which makes up of 86% of all residential solar users, also you need more videos showing more information on solar panels :) keep up the good work happy 4th of July
I went 48. No complaints. I use a 12.5 volt step down and yep it works great. 👍
Nice! Very cool
In an RV?? or a House?? 48 is badass.....
@@EOFugate In a 170" wheel base sprinter. I have 800 watts on the roof and a plug in the bottom so i can hook to a large array on my property so i can use a total of 4,000 watts. I can run the water pump on my well, air conditioner and washer/dryer(110 volt) at the same time without worries. Outback 80 amp charge controller and Outback gvfx3648 inverter. 48 volt lithium batteries from Chevy Volt. Bought on ebay. 2 years and no issues. Love it. Really want those Tesla batteries though.
@@offgridphilosophy7959 sweet system. One day, one day...
@@offgridphilosophy7959 I'm thinking of doing very similar to your system but starting with the Tesla batteries you desire. I'm doing a Schoolie. 40 Foot School Bus home. Specifically a Lion Company C Lion Electric MFSAB School Bus. Your comment about 48 is what's giving me hope. I have 2 years to prepare so I'm learning and studying all the different aspects. What calls you to Tesla batteries? What kind of Tesla batteries are you considering?
You're wickedly smart when it comes to solar knowledge, I wish you were my neighbor!!! Just bought my first REC 310w panel and trying to fit it with a charge controller.
You make learning about this stuff enjoyable. My dad loves chatting about his electrical work but I am not into it. But now I can watch at my own pace and be able to chat with him haha Thanks!
Dude, if TH-cam gave us the option to like videos before opening them, I would do so because your thumbail attracts those who want to learn.
I love Learning About this stuff even when I know I probably don't need it, you give so much info dude
Yes
U might need it
Skyph> BUT if you own your own place you CAN use solar to shave your electric bill.
A small ‘system’ that you can buy affordable components to assemble can be set up to handle a portion of your steady electric usage and keep heavy loads like electric range, electric clothes dryer, etc. on the utility supply. These lower ‘constant’ loads like a refrigerator use a surprising amount of electricity over 24hours and a small diy solar outfit can supply most or all of this load while affording as little as 12months ROI. It’s worth it.
The big national ‘installed’ solar suppliers with their grid-tie systems at huge prices like $30,000 or $40,000 that are currently popular are often 15+ years ROI and therefore, in my opinion, not a good investment.
This Will Prowse fellow has some interesting videos on small solar using transfer switches etc which show how this is possible. Even 200W of panel can cover 60Ah / 720Wh in good sun without much trouble in my less-than-ideal area.
@@fishhuntadventure I am a total rookie at this stuff but you are describing exactly what l am looking for. Still being connected to the grid for bigger items and a solar system for everything else, it would help lower the monthly power bill plus allow all the basics to work during a power outage. Hoping l can learn enough to design and build something like that.
@@Shakerhood69 Ive been watching his videos for awhile. He's to the point and detailed where it actually matters
I'm setting up my first 12v system and I pretty much have everything and ready to install. I like your channel out of them all because you go into detail with everything and I have learnt a lot from you. Will be building a small 24v house in the next 2 years so I will watch anything you have in 24v. Thanks for all the good knowledge.
If you intend to build off grid or even grid tied house! Honestly forget all this babbling. Make your life easier and cheaper in the long run...
Highest voltage solar system you can comfortably afford. And step up the system to what is regular, in your neck of the woods! Meaning 120v or 240v inverter...
Your appliances will be way cheaper. Wiring way cheaper and so on!
Entry level installation on 12V or 24V are relatively cheap and easy. Really nice for a cabin, tiny house and such! When the term "house" enter the game. It all change! ;-)
@@crpth1 thanks for the info. I already set up my camper with 12v and 240v with 400ah battery storage and now going to build a tiny home in my back yard on 24v.
Im a newbie idk why u watched this and god dang thats a whole lot of info you got there! I apreciate you a lot brother.
Of all of your videos I've watched, this is the one I keep coming back to watch again
Boy, am I ever learning a lot. I have your book now and am watching all your vids that I can find. This video showed me I need 24 volt set up, not 12. I was going to go with Lithium but after watching video after video I may just go with lead acid at 24. (Class C motor home). Now I have to figure exactly what solar wattage to put on top. This project starts in 5 weeks so you are helping me move along nicely. (I hope)
Another excellent presentation by Will. Worked in the electronics/electrical industry as a professional engineer here in the UK for 40 years and had no idea where to start with solar and Lithium batteries for my minibus to camper conversion. As others have said no waffle or fluff and to the point with detailed technical content. Going with 24V system and wished I could have brought the SOK batteries through Wills link but only ship on that to USA so had to go direct to get shipping to UK. Mentioned got their details from Will's presentations so he might get something from them?
Very nice. You have covered a lot of topics in a short video. Higher voltage is the way to go. One topic nobody covers is the losses across each connection and the copper-loss along each DC cable. A really excellent connection resistance is 0.1 Ohms; a tenth of an Ohm. If you have 10 amps flowing across that connection you lose 1 Volt. Multiply that by the number of connections. Ouch.
WA9KZY - (I'm leaning, so just asking) - is a 10th really a representative loss figure?? (because if it is, that's something!) looking forward to your wisdom
Thanks for the DIY Solar website Will !
The alternator overheating is solved by a External Regulator monitoring the temp of the alternator and adjusting amp output accordingly. Hit the major points perfectly!
I just started installing solar systems this year
This information is very vital; every installer needs to know this
Thank you so much, for this great video, I had NO idea, that there were so many differences between 12v & 24v systems. After watching this, I will definitely be going 24v.
You are literally my hero.
Infinite gratitude. If I had any extra money I would give it to you
You Rock!!! I have never felt so infantile regarding this subject. Just when thought I understood it and I normally watch videos primarily for additional thoughts and perspectives but then I have now watched several of your videos and it is as if you are speaking a foreign language (one that I do not speak). Your videos are well put together and for those folks with serious experience or degrees, I am sure they LOVE it. I pray that in 2 or 3 more lifetimes I will be able to understand your videos...seriously, great videos but I have never felt so ignorant...lol
Will, Once again you have answered all my questions before I got to ask them. Every time I think I might need to do something I look to your video's on how to and BAM it's right before me. Thank you for all of your simple explanations. You are one of a kind!
I have learned so much watching the last 7 videos and I am going to keep on going! Great job explaining! I want to do my own house system.... after I do a beginner system.
Thank you Will. As PGE shuts off power at their will my interest is more than mere hobby. Please do a video on building a 48 volt system for a home. Many thanks.
I hear you Sister. California politics are very strange to me. PG&E has equipment that starts fires, many people lose homes; so the government sues PG&E for the damages. PG&E says "ok, we do not want to get sued so we will shut down power if the risk for fire increases", people get mad and government sues for no power. I just don't get it, but either way, you certainly need to protect yourself from any power loss regardless of the reason. I live in the Mid-West and except for the rare summer heavy thunderstorm; our power is fairly safe and very clean too. I use solar for my way off grid cabin. I have a back up solar system at my house "just in case SHTF". I have learned how to reduce electric consumption via LED and other power saving methods. Thanks Will for all your contributions to the cause.
Funny. His videos are now mostly 48 volt server rack batteries with all in one inverters.
Great video, but to carry twice the DC current, you need twice the copper area which means that the copper only needs to be square root of two (~1.41) times as thick. But your point is correct in that you do need twice the copper, so it is roughly twice as expensive...
I nominate Will Prowse for the Nobel Peace Prize. Why? Because he has given me peace of mind with his explanations. How many people do you know that you can say that about. You da man, Will.....smile. Just bought your book.
Wow, great content and so proud of you overcoming difficult situations and now helping viewers like me. You are a smart kid!
Watched again. Thanks for the advice. Pro electrician here, but we work with ac. Industrial stuff. Anyway long time subscription to your channel and must say your teaching technique is spot on. Learning much from you. Ya Wire is the biggest expense in most projects. $4.35/lb. Copper miner. Wohoo keeps me employed. Thanks again.
Thanks to you I'm learning all about solar, volts, amps, etc:. Thanks for helping us.
I am 13 years old, and im calculating how much money it would cost and how much would be saved because my father wants to invest in pannels if they are effective
and I don't understand why certain COMPANIES won't LET ME LOOK AT THE PRICE OF PARTS WITHOUT AN ACCOUNT...
And out of the probably 1 1/2 hours of videos that I have watched, this one helped most.
it answered every single question I have had.
the links existed unlike other channels that won't be mentioned
even though this is two years old it is extremely helpful
Overall 12/10 thank you
Good stuff. I'd like to see more house/48 V wisdom please.
Definitely would like to see a 24V vs 48V comparison. SV Dauntless did a massive 53KW 48V system and I wonder how the wiring costs would have been different if they did it in 24V?
Definitely why not 48 volt we use them for cell towers as the need a bunch of power
So if I have a big bus going to run 24 what is the best battery for dollar I was leaning towards Tesla batteries room is not a issue I have a flat nose skoolie pusher? Is that my best option I’m aiming for 500amp hours run ac sometimes?
I’m no longer looking at Tesla batteries lol can’t decide yet
@@cliffschatz6918 Wow that's 12 kWh. I have 10.5 kWh Pylontech for the off grid house and that's the right size for me. I like those 48V rack mount jobs but it's obviously not DIY.
I can hear him all day 🤣, for moments he talk like a little kid n laugh....love it..."a mix of brain n innocence" ....thanks to talk so clear that eve me can understand!
We've used a 24v system in our off grid house and other buildings for almost 10 years, and it's worked great. We're in the mountains in Colorado, so don't need air conditioning, but we use a regular 120v fridge, chest freezer, washing machine, household vacuum cleaner, etc.. We cook and heat water with propane, and heat with wood. I take care of my flooded lead batteries, and the initial set of golf carts lasted 6+ years. The set of L16s should last 15 years or so. Lithium was still out of our price range, or we would have gone that route. Nice video.
Hey Steve I'm getting ready to build a 24v system. What brand golf cart batteries did you use? I'm thinking Interstate or Duracell 4 6v 210ah@20hr.
On average I have never got more than 6 years on the L-16's with trying to not discharge them more than 50%. Based on Will's videos I have changed to Lithium Iron Phosphate batteries and love how the voltage stays pretty flat during discharge. I have never had them go below 12.8 volts.
Man i love watching ur vids im 50 yrs old and im learning from u so great job.
This video was deeply informative with regard to the decision that I’ve made that it was definitely going to be a 24 V system as opposed to a terrible system. But now I’m questioning whether I want to bump up to 48 V when it comes to my PV array. My system is being designed around an off grid tiny home on wheels that is essentially a whisper booth. All of the purposes and functions of a modern home hot water sewage treatment etc. The PV array is the primary energy input. I will also be putting in some additional wind generating power. Once the system is under way.
You can have a 48v PV array charging a 24v battery system, many charge controllers will allow it.
I'm an electrical engineer and electronics technician and I've just started a bus conversion to motorhome. I went with a 24 volt off-grid system right from the start. It just makes sense as the bus runs on 24 volts. Using a 24 V off-grid system means I can charge those batteries from the bus alternator when under way using an auto-connect transfer switch. It's not strictly necessary as I have 2 kW of solar on the roof which is more than enough but it's easy enough to implement and there may be times when there isn't much sun so being able to do this is a bonus. The electric toilet has a 24 V motor, the inverter is 24 V as is the fridge. I'll use a converter to drop to 12 V for the LED lighting (the 24 V LED lights weren't available in a style I liked) and to run things like the CB radios etc.
Good info. Everything you said was important information. I was contemplating what size system to get and I was leaning towards a 24 volt but still not sure. After watching this video I have decided for sure to get a 24 volt system. What sold me is the part where a 48 volt system can be deadly and 24 volts is not. Its nice to have the luxury of power, and the safety of a low voltage system. Plus I plan to do a medium size system.
I agree, as a DIY'er I am not a trained electrician, I am in my 60o's and one good jolt...well who knows not worth the risk I am sold on 24 volt for my cabin.
So basically, 24V or 48V all the way for houses and 12V or 24V for mobile stuff like RVs
Thank you for the great video!
If you have over 2500 -3000 watts. It's better to go 24v or 48v, it doesn't hurt to get a backup inverter either, I have a 5kw inverter, 24v with 42v oc panels, I'm planning on adding about 2500watt plus, in panels, due to distance, I will be running about 90v oc. I have a smaller 12v battery bank, for my 12v lighting, over 100ah, LiFePo4, I also have backup equipment, I'm building a DC generator to to charge my backup lead acid Bank. And have a charger to charge my lithium bank from it , in an emergency, it can do 150 amps @ 30 volts! I hope to eventually go a week without sun, but panels the shipping is costly!!
I would say 2000 is the cut off. I've seen an 1800w inverter power half a house on 24v. With proper solar and power bank of course.
Feeling very lucky - my new (to me) rig is a 7.5t 24volt Mercedes Benz - 24 x 400Ah LiFePo4 x 1500w + 400w solar here we come!
I guess I see some other comments as well. So I'll say it. Give us more information on 48v system
@Barry Barry please!!!!!!!
Very good no nonsense explanations of this topic, and no pushy sales gimmicks.!😊
Thanks, Will, for this no nonsense explanation. We have our foundation and pole in for our off-grid array. We are shut down until spring because of access only by snow machine. If I keep watching your awesome videos I will at least know what my solar contractor is talking about and maybe do most of the install myself ! Happy Holidays!
I have gained so much knowledge listening to this expert. I consider myself capable but electricity has never been my experienced skill or trade. I have wired my own on-grid shop did a good job. But electricity has many different layers. And the Automotive/RV side of electricity is beyond my skill level. However I am a quick learner and Will Prowse has helped me gain enough knowledge to start making some decisions about my 40 ft 5th wheel; that I want a 100% offgrid/unplugged solar powered electricity system. And with this RV I am starting from scratch, as it has zero in the way of integration of the 120 vlt AC connected/plugged in - RV internal system, but the 12volt DC system is tiny, with the waterpump, refrigerator, water heater and exterior RV lights being the only draws. I have no way to charge my 2 house batteries other than doing it myself with my own battery charger outside. My roof is large enough that I feel I could design and have a solar system that will not leave me wanting for more power. I am a usual sun worshiper; in that I travel to mild weather, with lots of local Sunshine. So I will have the ability, I just now need more knowledge to move forward. Watching these videos surely does help me make better and wise decisions. This solar system that I want will be my home on wheels, I am fully intending to live full time in my RV.
I’d love to hear you explain the pros/cons of using a 24v battery (50ah) vs two 12v batteries in series (50ah). Is there a preference? BB sells both so just curious. Thanks Will!
I have a 12-volt system, Mark 2 charge controller $100. Two T105's $100 each. 225 amp hour. I got a deal on a couple of panels $400 for two $100 in wiring and fifty bucks for an inverter. One brand new 1500 watt generator, $100. Champion model. And a 950 Watt battery charger $180.
Total of 1080 and I've used that system for 10 years. It's all still working.
Great video, as usual! I just joined your forum so that I can study further the best system and components for my needs! I'm researching a semi-portable minimal system to run a couple of refrigerators and maybe a couple of lights and fans for post hurricane survival when the grid goes down! I appreciate all your excellently communicated recommendations!
Nostradamus that you?
highly technical without images for visual illustrations. Nevertheless very educative. Your confidence levels are enough the convince me. Thank you so much for this video
Back when my friend was installing solar panels on the roof, of a bus, it was a sunny day, and he forgot to cover the solar panel, when he grabbed the wires to connect them he got a slight shock, but it was enough to make him loose his balance, and he fell off the roof and broke his wrist😆. GREAT VIDEO Thanks William Orange county, ca.
Moral of the story: Don't land on your wrist! LOL 😂
Jokes apart, as a young (and stupid) teenager I temporarily removed an electric wall heater (230V) from the wall. "Clever mind" taught no need to switch if off! I'll be just fine...
Well. I was fine until, for a fraction of a second, I touched both wires. I was crouched doing the job. My legs spring so violently that I, literally, flew across the room! And upon landing, crushed the door of a cabinet on the opposing side of the room with my back!
Only than I turned OFF the breaker switch... ;-)
Curiously! By now my hair and beard are white! AND I always turn the breaker OFF when messing with power! LOL 😂
This is the most no-nonsense explanation I have ever heard. Thank you!
Man I’m impressed with the amount of information in your videos. Very good job.
Thanks. Retired from electrical work about 11 years ago and never, ever knew why people opted for a 24 volt system
I love all your videos. I'm glad this one came up in the suggestions though because I was wondering why my battery wasn't getting a charge. I neglected to realize that I had 12v panels in parallel with a 24v battery. I have now put the panels in series/parallel, hopefully this fixes my problem.
I'm interested to find out if it ended up working. What were your results with the situation
Samlex SDC-23 24v to 12v regulator here. I run my network and servers on a 24v system here. Battery bank is floated off shore power but solar backed. Just to help with power cost but mainly power outages.
24V bus alternators were generally oil cooled to keep from them from burning out under full constant load. There are air cooled versions available as well.
Awesome explanation. Really great break down of practical applications for the different voltages. Learned a great deal.
Thank you for the video. I live in Las Vegas on Trop. It's nice to know you are speaking from experience
Really great video, extremely informative, very intelligent, honest, and well communicated. Will, you're a good man! best wishes from Alan, UK.
Very informative and good comparison of 12v and 24v systems:
It is better to categorise, as a Professional Engineer my options be as follow:
1-Small system 500W to 1200W 12V is better
2-Medium System >1200W to 2000W, 24V is better choice. PERSONALLY I prefer it for house use, safe and economical.
3-Large Size System > 3000KW and >5000W, 48V be used.
Man I Forgot How much I love your vids.
:D
Nice, "information rich" presentation. This does not "drag on". Well done.
Wow ! what power ! yea, ur smooth, consistent burst of knowledge, { really long one :) } without the umms and aaans did make me pause, rewind, and scramble for my pen and paper hehehe.... Truly amazing is the way you pour out your knowledge with such ease. Yes, as another viewer commented tht ur video works like a charm, i can not agree any less ! Thankyou Tonns junior ! :) love your unassuming manner of sharing. Keep it up, u r Blessed ! i will be getting your Book, Thankyou for sharing ... take care ...
I work in the cell phone tower industry and we are switching everything over to -48V DC systems up to 1200 amps. It took a while getting used to the negative polarity system and hooking the + terminals to earth. You will get a massive amount of sparks when screw that up. It is no joke even compared to 120/240v AC systems.
You have a book??
I'm waaay off-grid and struggling through with a Harbor Freight system.
In my old boat it had twin engines, with a 12v alternator and battery bank on one engine. The other engine had a 36v alternator and battery bank.
36 for starting the engines, and 12v for all the house equipment, electronics, etc.
the down side is 2 battery banks, and you have to be careful not to start the 12V side first and possibly drain the battery so you can't start the 36v side, which charges the starting batteries.
Up side, good cranking amps with 36v, easy setup for 12v house system.
Wish I can like this video twice.
Your videos are awesome! From a sunny Cape Town South Africa and the countries current energy crises this is helping me so much!
I switched from 12 to 24 due to many recommendations about the efficiency increase, but the step down transformer needed to run 12v appliances used more energy than what I was gaining by going to 24v. So there's that...
Maybe im wrong but dont think the benefits of 24v he mentioned were so much about gaining voltage as opposed to reliability and cost savings in long run by having your equipment last longer without the need to replace it amd initial expense.
Transformers are typically very efficient, usually close to 98%. You shouldn’t have much loss in efficiency if it’s sized properly.
I'm half off grid with mine. I just bought the stuff had no idea what I was doing and I essentially power our entertainment system as well as a few other things. It halves the electric bill.
Mine is 24v mini system 😁 with a converter that I plug extension cables into for my ac needs.
Thanks a lot compa I need to do that I’m trying to learn more for more power can you please tell me the best battery solar bank thank you
Pppppp
You explained better than my teacher.
Thanks a lot .
Thanks again, Will! I am gearing up to install a solar power system in my van to power some lighting and my laptop. This video answeres the question whether to go with a 12v or 24v system. BTW my OCD compels me to ask that you fix that twisted slat in the window. Hahaha Just kidding
I hate to admit, I was in the same place with that slat. Worry no more will we since Wil now is enjoying the benefits of home ownership!
@@carrtb Will did a Live stream last night from his bedroom (too much echo in lab). I had to sit through an excellent Live stream whilst looking at the lumpy bed covers. LOL
This video got so mutch info I keep watching it over and over to let it all sink in since I'm new to SOLAR THANKS ALOT WILL AND IM GONNA BUY THAT BOOK SO I CAN SOUND LIKE YOU WHEN I TALK ABOUT THIS STUFF LOL
amps grind on your electronics i'm going 48v or even 72v if i can find the right charger.
How's your quest?
@@Zeppelinlv2007 building a power wall, there's a video on my channel of me assembling a Li-ion pack, probably gonna go with 48v
Will MVP!! you should be a sparky teacher!! Explanations are on point and for us pea brains!!!!
Great video! Can a system be too big in a van? I want to set up my van as a mobile power vehicle, with the capability of powering my house in case it’s needed. How big with max aH and max volts can I go (safely)?
Your intentions might be noble. But absolutely senseless! Some common sense is very useful on those occasions!
So you want solar power on your van, makes all sense. ;-)
You want (a lot of) power in your house... Fed from the van, doesn't make any sense!
Your house benefit from the area, the fixed condition, weight is no major hassle, makes production and consumption close to each other, etc. etc.
So why feed it from a moving vehicle, which would be overloaded with unnecessary crap. AND for starters lack the much needed area for panels. And the volume and load capacity for batteries and such! I find hard to believe anyone within a sanity option would consider haul all that. Back and forth on a permanent basis! Don't you intend to use your van? I mean drive it around, use it for what it's built for loading stuff, etc?!
With this said, the van roof covered with panels and an inverter. With a simple extension cord could provide to the house in an emergency. A boost if you will.
But the main core for the house should be in the HOUSE... Cheaper, simpler, and you don't have to drive around all that!!! ;-)
BTW I do have solar on my van. ;-)
Late response but may help others. Click on the link in video description. Scroll down to Other Blueprints - Solar Trailer. This gives a good example of equipment needed and the space required. Will built the system inside a enclosed V Nose trailer.