This use of T500's to directly charge the batteries as a work-around for the AC grid charging issues, especially when combined with the smart plugs to control when charging should take place is an elegant solution to preventing drain down overnight when using medical equipment AND the big draw of AC at the same time. I used to have to transfer the AC over to grid power at night manually then remember to transfer it back to solar in the morning. I wasted a lot of good solar power forgetting to do the latter. Now it's all an automatic process thanks to your wonderful work-around with the T500's feeding just enough into my battery banks to offset much of the draw and keeping my system running 24/7 without ANY attention from me. BRAVO! Thank you so much for sharing your knowledge and ingenuity.
Excellent content, great clear, concise narration, outstanding video quality, just what the Bluetti geeks need, as there is little to nothing like this from Bluetti Keep up the good work.
Thanks for the detailed explanations and your work with Bluetti! Watching with interest as you work out issues so that I can bring my systems into split phase.
@@MyBluetti I just got a GS10. In its manual, it identifies several devices it’s not compatible with, including some compressor based devices. How did you determine that the GS10 you have on your freezers would work, whether on house power or AC300 power?
I have a similar setup for split phase service, using the two AC300 units, six B300 batteries, and the P030A Fusion Box. But my transfer switch is not ahead of the AC300 input but at the Fusion Box output. The AC300 can gets its 30A 240 VAC power from a 40 A circuit breaker directy to my utility panel. So when I transfer my home from the utility to the AC300 split phase source, I never get any problems. I am supplying my AC300 setup power from PV panels, therefore, I never suffer any utility power failures. And I leave the 40 A breaker off unless there is a heavy cloud cover and my PV panels cannot charge my B300 batteries during the day.
Hi Raymond. Thanks for sharing your setup. Just so others are aware and they don't assume, you can not use your Bluetti to back-feed a panel that is actively powered by the grid at the same time. The Bluetti is not designed to sync with the grid and its phases. Secondly, the use of an interlock device is required with this type of setup. Besides that, yes this type of connection is pretty standard for "generator" hookup and is an option as well. I actually do have this option in my main panel too through an generator inlet.
Fantastic... I'm a total newb... And your videos very helpful! Love some insight how you have your solar set for that setup. Seems a couple of us have same. I have 3 pv350... And want some hard panels. Live in SC with fulllllll sun
Hi Jim - Thank you for the feedback. At the moment my 12 panels (400 watts each) are sitting in my garage. They are about to be installed on my roof as soon as my solar disconnects arrive. I will have 4 arrays with 3 panels each providing the max solar input of 1200 watts per PV input.
@@MyBluetti th-cam.com/video/hZYODD7QURY/w-d-xo.html David, would you check out my videos and PLEASE help me... I'm pretty set up with same as you. Thing I rewatched on this video was you're having to power batts with the chargers vs ac300s. When trying to run on batteries alone it drops to 100watts on master and 100 slave and house literally loses power most places and blows led bulbs etc... Switch works as intended with full power thru ac300 and from utility it's only when trying batteries only... Been going back and forth with bluetti and he keeps telling me electrician... He even told me the split phase wasn't intended to be used as UPS? Um those are only working options?!? Any advise would be great thanks
Thank you for your videos. I am leaning towards the Ecoflow Delta Pro setup with the 50amp Double Voltage Hub (7200w Inverter Continuous/14200 Peak). With Bluetti delaying the 50amp fusion box for the AC500 concerns me but the thought of 10000 continuous with a 20000 peak gets me right on the line with my need and worth the wait.. maybe
I'm hoping to have an answer on the AC300 if they fusion is even required... before I got mine I was just using a y-adapter to merge the two AC300's into a single 240v cable... it worked fine, but I need to confirm that the fusion doesn't do anything special... if not, I would assume that the AC500 would work the same.... and a y-adapter can be used to create 140v 50amps. I would also need to get my hands on one and test if the 50amp outlet is 120v or 240v. If it's 240v from a single AC500 then that complicates things.
How do you have your Solar set up to charge both the master and slave batteries at the same time from a single bank of panels or do you split them to feed both the master and slave AC 300's?
Hi Grits - I have 4 separate solar arrays running at a max of 1200 watts each. The AC300 have two solar inputs, therefore each AC300 is getting a max of 2400 watts of solar each and 4800 watts in total over the whole system.
Great info! Did you ever find a solution for the AC300's tripping under surge loads? I just setup by AC300 split phase system and I'm having the same issue. Thanks for all the detailed videos! They are awesome!
Wow, excellent video! Give me something to aspire to. I'm new to this, I have a AC200Max and had an electrician over and they installed a Nema 14-50R. I can't find much resources on how to connect this to my generator. I plan to add additional batteries, but any suggestions on how to connect them? They don't make a male TT30 to a male Nema 14-50R cable lol I'm missing something.
David, Great content, thank you. You mention that you can charge both B300s from one T500 connected to a smart switch? Meaning that 500 watts is more than enough for your load and you can add charge to one B300? Or, will the B300 that is not connected to the T500 actually charge as well (load permitting)? Batteries do not balance charge state, I think? Thanks
Hi Bob - I'm not sure I understand your question completely, so please let me know if my reply does not answer your question. A single T500 is only capable of charging a single battery. In my setup I use the smart-switch to control when the T500 is turn on and turned off. This allows me to turn on the T500 when needed.
I know you are using the Y cable to combine the 2 AC300s. Do you still recommend this over the Fusion box? And do you have a link to the y cable? Thank you so much for your videos.
Hi Toxic - I used this TT-30 to 50Amp Y-adapter: www.amazon.com/gp/product/B09HV8KB24/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 If you need a 30 amp output, then you'll need to get an adapter: www.amazon.com/gp/product/B09P19XHJD/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1 I'll try to put together a quick video that goes over this.
I put this question on another one of your Split-Phase videos. And thank you again for your videos. I have been running a single AC300 with no problems. It feeds a Generac Transfer switch. The AC300 only powers the transfer panel, nothing goes to the grid. I use PV priority mode and a 110v outlet feeds the AC300 if the batteries get below 15%. I am going to bring in the second AC300 using the communication cable and Y-cable like you use. According to Bluetti I can still feed 110V from the grid to each AC300 for when the batteries drop below 15%, but each AC300 has to be fed from a different phase from the grid. I have run a circuit from each phase and each one feeding it's own outlet. Two 110v outlets, 1 from phase 1 and the other from phase 2, Obviously one will feed the master and the other will feed the slave. You have talked about problems when feeding from the grid. Is this still an issue? I do not have large draw items on the transfer box. I will also balance the loads to each leg. I have never gone over current and rarely have a draw over 2000W. Normally It draws between 300W and 900W. There are 2 refrigerators and 1 small freezer. I will probably limit the grid draw to 10 amp max. The grid will only be to maintain the least amount of power needed until the solar panels start charging the batteries back up. Unless we have several really cloudy days I never pull anything from the grid for the AC300. I really want to use the AC300's automatic use of the grid when necessary. I would rather not have to use the T-500's to directly charge the batteries. I do not have the automation like you do. And again, the single AC300 if working perfectly, pulls from the grid if necessary, neutrals are separated and all that. I would really like to hear your opinion and possible problems on feeding the Dual AC300 240V setup from the grid. Thank you so much for all of the videos you have made and all of the time that has gone into them. Here is the most current video from Bluetti for connecting the dual AC300s th-cam.com/video/aDLxv5oM5kg/w-d-xo.html
Hi Toxic. So the short answer is yes there is still an issue with the AC300's when running in split-phase mode, when you have them connected directly to the grid. I hate to say that I don't expect Bluetti to be able to resolve the issue with the AC300. The issue for me and many others was when the AC300, running in split-phase mode, and connected to the grid would "trip" and reset itself when the medium to large loads occur. The only solution I found was the use of the T500's that you mentioned, which provided power to the systems batteries, without the head-unit know about it. For myself, I upgraded to the AC500 and was initially afraid that it would experience the same issues as the AC300. However, I was pleasantly surprised that the AC500 worked flawlessly. I plan to sell my AC300 to someone who only needs a single unit, in which the AC300 works great in this mode. I wish I had better feedback for you.
@@MyBluetti Thank you for your answer. Maybe Bluetti should replace my AC300s with AC500s. What do you consider medium to large loads? I would only expect 700W constant which could cause a 1000-1400w spike. I'm afraid that is going to be in the medium to high range. I just don't want to see the smoke coming out of the AC300.
How do you find the standby power is. Was thinking of buying these. But from my research, on paper that would waste 120 watts per hour just to power both inverters for AC. So thinking better to wait for the Ecoflow delta pro ultra and also get the full 30 amps?
You mentioned the AC500. I just purchased my AC300 with single B300 and two PV350's. My goal was to scale up as time and budget allowed. Do you feel the AC500 will be compatible with the AC300? I guess I'm trying to figure out a strategy from here. Let me know your thoughts.
Hi Joseph. From what I understand, your current B300 batteries will work with the new AC500. You'll just need replace the AC300 head unit to bump up to 50amps service. If you need split phase then I would assume they'll have a new 50amp fusion box.
Great videos - thank you. One question about your Generac 9854/9855 manual transfer switch. Since I'm easing into this, I have just one Bluetti AC300 at the moment (so no 240 volts), and I want to run it as a separately derived system (as you've been advocating) using a switched neutral transfer switch. I was planning on wiring the single hot wire of the AC300 generator output to both the L1 and L2 connectors on the generator side of the transfer switch, and then avoid the use of 240 volt double-pole circuit breakers, and then also put a warning label on the transfer switch about what I've done so that no one mistakenly adds a double-pole breaker later on thinking they'd get 240 volts. My understanding is that this should work fine a truly manual transfer switch with no electronics. However, according to the Generac 9854 manual, the electronic control switch you talk about in your video (at the 14:23 mark) won't let you switch to generator unless it detects 240 volts from the generator. So I'm wondering if you've ever found a way to trick the electronic switch into letting you switch to generator mode even if there's not 240 volts present (i.e. defeat this feature of the switch). I figure you may have had a similar problem if you ever tried to use your transfer switch with just one of your AC300s, but maybe you haven't done that. I think I could avoid this problem with the Reliance X series, but they're not available due to supply chain shortages. If the Generac 9854 can't meet my needs for my single AC300 setup, any other ideas (besides the EZ switches)? I'm really struggling to find a switched neutral transfer switch, or any other 3 pole transfer switch that's appropriately sized. Thanks.
Hi Doug - So let me first say I'm not an electrician. So please take what I say with a grain of salt. With that said, I would think that you can bond L1 and L2 together on the "generator" side. However, make sure that you don't accidently expose this bond to the grid side. This also will only work if you have "one ac300", you "can not do this with two ac300" as you will over-load your neutral wire that returns to both units from the transfer switch. Also you need to ensure you do not install any multi-branch circuits in your transfer panel when you bonded the L1/L2 together (shared neutral)... this will also cause an overload of your neutral wire because they'll be on the same phase. I have never tried to switch my Generac transfer switch over when it's being powered by only one leg or one phase to both legs. I would assume the transfer switch doesn't actually look for 240v, but it just looks that both LEGs are powered. In any case, there is a manual failover switch that you can flip as a backup to the electronic switch if it won't flip over. Generac is great about answering questions, I would give them a call and ask them to confirm.
@@MyBluetti Thank you for the quick reply. I'll try giving them a call here soon and will let you know what I hear back. I knew about the manual failover switch you referred to, but in the manual they emphasized that you shouldn't toggle that switch under load, and it's a bit trickier to access, so it's not nearly as ideal. Thanks again.
Sorry… but not up on all the specs and things. But I’m looking to get a 50 amp switch for my house. I have a propane generator 13000 Watt that I would use for major emergencies and power outages, but I also have one AC 300 and looking to get another one. I would like to connect them just like you have in your video in split phase but I’m wondering on the fusion box where you have, the cord coming out of it is that a 50 amp cord plugged into a 50 amp switch? Any help would greatly be appreciated. Thank you for your time.
I have a question maybe you could answer. Thinking about getting the 300 but want to know if the battery is charged and you have it hooked up to 600W of solar will that extra go to run the things you have plugged in or is it just wasted because your things can only run from off the battery. Thanks in advance:)
I would have to test this... but I believe if your batteries are 100% the power produced by the panels or grid (if connected for grid charging) will pass-through to your loads. I know that's how the grid charging works, but I will need to verify... I'll circle back to you.
@@MyBluetti Pass through charging is different as it merely lets you "use the battery" while it is charging at the same time. My question is can the extra solar coming in in excess of that charging the battery that be used by the loads?
@@legaleagleandpaws8198 correct. I'm just saying that I've only verified the grid side. I will need to check on the solar and if the excess is passed to your loads or not.
I have another question for you. My B300s are full by 1:00 on a good sunny day. I was thinking about charging a 12v 200ah Battery and let that battery send power to my 4 D050S enhancers which would put 100w into the B300s for several hours every night and I should rarely need and grid input. Unfortunately this could discharge the 12v 200am battery too far. Or the 12v 200ah could run and inverter and run 2 T-500s for a couple hours and get the same wattage into the B300s. I could control the inverter with a smart switch on a schedule and only discharge through the T-500s when I choose. Can the 12v 200ah battery be charged from the 12 30a RV port on the AC300. Technically I could have one on each AC300 and be adding nearly 5000wh to the system. Can the RV port go straight to the 12v 200ah or would t need to go through a DC to DC 30a charger. Like you have said these things become a monster with a crazy amount of wires. I just hate to waste 4800W of solar when my (4) B300s get full on sunny days. I know I could add 2 more B300s, but I would rather spend $1200 on 2x 2400wh batteries (that I can also move use somewhere else) instead of spending $2000 on each B300s. I'm trying to figure out fully or semi automated ways to store all of that solar. Once again thank you for getting back to me. I really appreciate all of the things you have gone through and tried to find what works well and what does not.
Welcome to my world. I fill up my batteries on a good sunny day by 11am. Therefore I've been swapping circuits in my transfer switch to hold larger loads. The biggest issue that I've seen with the 12v outputs, especially the cig output is that it gets extremely hot. I had tested moving power from the AC500, being my primary system, and pushing the extra solar to my AC300 environment using the 12v cig port. This is when I found that it became very hot. Enough that I stopped doing that.... Alternatively to the 12v, and even though it will result in a bit of a loss, I would use the AC ports to move power to another storage unit. I know of someone else who uses T500's between he's AC500 and AC300 system to transfer solar power between Bluetti's. Even though he does get a lose by converting to from DC/AC, then AC/DC, it's better than rejecting the solar power because your Bluetti is full.
Thank you for your video. I have 2 Ac300 each with 4 B300’s plus the smart panel from Bluetti but once plugged in. One of them did not receive AC power anymore. Could the reason be that the the units where not yet set to split phase? I am trying figure out why it is not working. As all cables are from Bluetti. And I had a trained electrician install it
Hi Andy - sorry for my delay in getting back to you. So what do you mean that one of them did not receive AC power anymore? Are you saying that you have your AC300 connected to the Grid for AC charging? In any case, yes you will need to enter into split phase mode when you connect to the Smart Home Panel. Make sure you have your communication cable connected and then set one AC300 to master and the other AC300 to slave. The units may throw an error for a few minutes while the setup the split-phase.
@@MyBluetti thank you so much for your reply. Yes for some reason when in single mode and the smart home panel connected. AC input on one unit will not see AC in from the grid. Only one unit shows as charging from grid. The other unit has 0 watts draw from the grid side. I don’t have solar yet. My guess was that something is wired wrong. But all the cables are already pre wired so how could it be wrong. Unless the smart home panel is wired wrong. I read something somewhere. But maybe that was another issue altogether
Do you have an outlet tester or a volt meter? If so, can you test that the AC output of both the AC300's is enabled and sending power at the outlets on the face of the AC300 unit.
@@MyBluetti thank you I can check and see if the output on the unit will show the power. But my problem was on the ac in to the Ac300 (one of them) although the 3 pin plug has the power available (I measured) the ac300 does not recognize it. So it shows as No power coming in on the Ac side
@@MyBluetti thank you for your input. I have tested it and there is voltage. I have just gotten a AC300 replacement from Bluetti and it now shows voltage coming in. so on that end i think i am good. the last unit i had threw an error 008 and it was useless as it no longer worked when i plugged it into the smart plug from bluetti. My question is on the plugs of the Smart plug (the ones that connect to the AC 300 Power out ports) i currently have only the left unit plugged in ... should there be any power on that plug itself. I am afraid of causing another error 008. As this happend the first time i plug the second unit in. It might be something else. But before i go and plug it in i rather test it first. thank you for all your thoughts on this. There is so little information from bluetti to understand this more. I am still waiting to hear back from them about my issues. You are much more of a help then i got from them. Besides sending me a new unit.
I have AC300’s. Supposedly they updated the physical units to address the wall input power/sync issue. When did you get yours? Mine were launch units and one exploded when plugged into the grid and “power loss” and then resumed power. I also have the generac transfer switch.
You have some real practical advice here. I have a question about split phase. Do you believe I could add an AC500 to my existing AC300 and do split phase power? Thanks
Hi David. I don't believe you can. The two units must sync with each other over the communication cable to create split-phase... And I believe the two units must be the same model.
Thank you for this video. I also have two AC300 with 2 B300 batteries for each. I just had a couple of electrician come out. The second one wants to put in another interlock system for the Split phase. I have an interlock for my portable gas/propane generator. So if would not mess with the interlock system for that, and then have another interlock system to either use the AC300 Split phase or the gas/propane generator. Where did you purchase the extension cords?
Is your current interlock system a different size? If not, you should be able to use the same one for either gas or solar generator. Which extension cables are you referring too? Yellow TT-30 cables?
@@MyBluetti I don't know what you mean different size. Not sure what they are going to do. I am going to get a third electrician come out and give me an estimate. The second electrician said he would put in another panel with an interlock switch, and that I would have to switch between gas/propane generator and the Bluetti AC300 Split phase. The first electician didn't know to much and the company is having another electrician come out and give me an estimate. Yes. Where did you get the Yellow TT-30 cables?
1 AC300 + 2 or 3 battery packs In this case, will the battery packs consume power at the same time? Will the battery packs keep balance with each other?
I used mine for the first time today. I am a bit confused. I hooked everything up as per instructions. But the system ran the battery on the master from 88 to 0. The slave battery ran down from 98 to 86. When the master battery hit zero it shut the system down. I assumed that both batteries would be in play. Two AC300 units each with one battery pack. Any ideas what I did wrong.
Hi Boone. It doesn't sound like you initially did anything wrong, but let me explain. The Master and Slave are completely separate systems. They do not share power, nor keep themselves balance with each other for the load their are providing power to. The only thing that is shared between them is the communication cable, which causes the master and slave units to send power in opposite phases (+120 and -120). This is a requirement to create 240volts, when needed. If your master drained faster than your slave, this means that you have either too many loads on attached to your master or the loads on your master require more power. Can you tell me how you're connecting your Bluetti's to your loads? Is this through a transfer switch?
@@MyBluetti Yes it is. Simply shutting the grid off and turning to the gen side. I assumed that since both sides were joining into one L14-30 that the power was coming from both units. You know what they say about assuming. Lol.Thank you.
We were only pulling 85 w consistently. Until the furnace kicked on then we were pulling 525. We had very little on because it was from noon until 1:47. One led t.v. One oxygen machine and one light.
@@MyBluetti sounds like I went about the setup the wrong way. Looks like I will have to spend more money on more battery packs. 2 hours is not going to be long enough with medical equipment involved.
To grid chare the w units they make a splitter that's 220 s split to 110 in onbothmasfer and slave units then you plug it into 220 30a outlet them you can grid charge in dual phase. 😊
You mentioned in a previous video that you would only recommend using X-Series Reliance transfer switches. I would like to ask why? Also, I have the AC500 with 2 B300s batteries (with the plan to expand to four batteries in the near future) and want to run 120v equipment at present. The idea being that I will get another AC500 and run split phase in the future. What 50 amp, 10 circuit manual transfer switch would you recommend?
I have 2 AC300’s I bought the BLUETTI power cord and it’s 4 prongs. I was wondering is it 220 volt or is it 115 volt ? Do I need to put it on separate fuses or can I wire it up as 30amp 2 post breaker?
I've been waiting for this myself... I haven't see anything on it from Bluetti. I would love to add this, especially since the side of my home is a wind tunnel!
@@MyBluetti hey quick question for you. If I wanted to run my Electric water heater with a set up two batteries bigger than yours split-phase what's the best transfer station I should look into? I have 4 big loads
Hi, I have the 2 AC300 / 2 B300 / P030A system at my off grid cabin so that I can get 220v to run a deep well pump. In June I set the system up in a temporary location. After a couple failed attempts I was able to get the split phase function to work and the system ran great until this weekend when I moved it to its permanent location. After the move I haven’t been able to get the AC300’s to accept the split phase. Any suggestions of what I may be missing? Thanks Jim Barker
Hi James. Are you getting any errors when you try to start split phase. Also check your communication cable and ensure that the large tab on the connector is point up to match the input of the AC300.
@@MyBluetti Hi David, Thanks for the reply. I corrected one end of the comm cable and tried to initiate the split phase again, but errors 024 & 061 on the Master and error 061 on the Slave displayed. Any thoughts? I’m trying to contact tech at Bluetti, but haven’t had any success. Thanks
The two errors you are getting are usually caused by improper grid phase requirements for split-phase charging from your wall ac outlet. This is usually because you're using the 15 amp cords that came with the AC300. For more information on the wall ac outlet requirements please see my other video: th-cam.com/video/l1haUsklLKE/w-d-xo.html You can also try to enter split phase with your AC300 disconnected from your grid's outlet for charging and see if the errors go away.
Hi David, Unfortunately that wouldn’t apply here as I am off grid and only use the solar panels for charging. I have also tried to enter split phase with everything unplugged from the AC300, ie cables from the panels and the cables going to the fusion box. Would there be any benefit to resetting it to factory settings and trying again? Thanks for your efforts.
Hi, After checking the unit I decided to try and reseat the communication cable again and after that the split phase set up smoothly! Thanks for all your help. Now I can get on with my life!
OK, maybe a dumb question... Why are you using grid charging to the B300s at all? Is that just for testing purposes? If you are using grid charging, you may as well be powering your appliances from the grid. What am I missing?
Hi Jeannine - The AC300 has multiple applications that it can be used for: - Obtain power from solar panels only and go completely off-grid for your circuits. - Obtain power from solar panels and allow the AC300 to use grid pass-through to handle large loads/spikes. - Primarily run off solar, but set a battery minimum and allow the grid to maintain x% on the battery - Run the AC300 in UPS mode to, by allowing the grid power to store on the batteries and allow grid pass-through to keep your circuits running. In the event of power outage the AC300 will continue to keep the circuits online.
Hi David, great channel! So I was planning on getting the new solar generator AC500 because it has 14-50 (50 AMP) which can charge EV vehicles. I was notified by Bluetti though that it is 120V which is going to charge the car very slowly (. Is there a way to make 14-50 240V to get level 2 charging which will charge the car faster? Do you think It’s possible for Bluetti to put in 14-50 240V plug instead of 14-50 120V in their future AC solar generators? Thank you!
Hi Sevak - the only way for you to get 240v out of the AC500 (or even the AC300) is by getting a second AC500 and pairing them together via the communication cable. The communication cable allows the two unit to create each phase required to create 240v. Outside of that a single AC500 unit was only every designed to product 120 volts.
👍 I see what you saying, I got your point 👍 I’m waiting for EP600 and B500 that has capacity up to 78 kwh that’s going to lunch in November! Hopefully it has the features I need cause I can see myself running into the same issue of having too many wires around the generator
Hi Emmanuel - Yes and no... and depending on your home requirements for power and the setup of environment... To better explain the UPS (uninterruptible power supply) term should have not been used by Bluetti, as their AC300 system will maintain power to your loads when the grid power fails (40ms failover). However, when the grid power returns, the AC300 will stop power to your loads for a moment (1-2 seconds) to sync up with the grid phases, etc... therefore the process is not a "uninterruptible power supply". I do believe they have room to fix this issue with software coding, but at the moment this is even an issue for my environment. A work-around: Myself and a few other people have added Bluetti's T500's to our system. These T500's directly charge the batteries from the grid and bypass the AC300 head unit. This allows the grid to come and go without affecting the power going out to the loads. There are a couple of draw backs to this work-around though: 1) No battery management. 2) Only 500 watts of charging per battery, per T500. 3) Constantly charging, unless you add a smart outlet with a schedule. For my environment, which is running 50% of my home and running 24/7, I have x4 T500's running on schedule that is controlled by smart outlets. These outlets have been programmed to turn on the necessary number of T500's when solar is low or unavailable. To my surprise, I normally only need 500 watts to each AC300 and I never fall below 60% for my batteries. During low power usage in my home the batteries will charge right back up to 95%+ Please let me know if this answer your question or if you have further questions.
@@MyBluetti From my understanding of what you said it can be used as a UPS if it is configured in a way that obtain power from solar and allow the head unit to use grid pass through to handle large loads (I saw one of your replies in another comment) and charge the batteries directly without the head knowing with the t500? Can you explain the battery management part? I am new to solar, only have a certain knowledge about the topic. I want to use the system in my apartment where I have limited space for pv panels in my garden, only for maybe 4 conventional panels and would only use for the 120v part.
Yes you are correct. Charging with DC sources, such as solar into the head unit or using the T500 to charge the battery directly will allow your system to stay on 24/7 and not be effected by grid outages. So the AC300 has a BMS (Battery Management System) that monitors the batteries and will charge/discharge the batteries beyond what you configure it for. When you charge with the T500's it will simply charge the battery until full and has no management. However I have setup my T500's to run on a schedule that is controlled by a smart switch. Twice a day I let my batteries drain for an hour and give the T500's a break.
A few questions David. 1) Can I charge one of my two AC500/B300S sets while operating in split phase mode? In a power loss situation, my generator cannot supply split phase 240V but it can provide 30 amps at 120V which could charge one AC500 at a time. 2) If while operating in split phase mode, I use a T500 to charge one B300S and a second T500 to charge the other B300S, do the two T500 have to be on different phases? That of course assumes the T500 is compatible with the AC500/B300S. Since its going direct to the battery I wouldn't think so but I had to ask. 3) Is it better for the batteries to charge at the lower rate of 500 watts than at 3600 watts (30 amp 120V)?
Hi Marshall - Let me make sure I understand your question. You have two AC500's, but only want to charge one via the grid while in Split-Phase mode. Is this correct? Concerning the T500's, this is my preferred way to charge a system in split phase, and yes, it works with your B300S. If you charge through the head-unit (AC500) the UPS feature is not available. However, if you use the T500's the system will maintain power to your loads even if the grid power goes down. There is no requirement to have the T500s on different phases. I will be doing a video soon on the T500, as they are a great resource to have.
@@MyBluetti The question regarding only charging one at a time was when the grid is down. I can provide 30 amps single phase with my Honda generator so I can't charge in split phase mode. So I was wondering if I can charge one at a time from my generator while remaining in split phase mode? Is there an AC adapter specifically for the AC500 or B300s? I don't see one on the Bluetti web.
The answer to your question is yes. You can charge one at a time if needed, while in split-phase. Alternatively you can charge both at the same time if you lower the "max input" rate to something your generator can handle. The only special power adapter you would need, outside of the 15 amp power cable that comes with your AC500, is a split-phase charging cable. However your generator must be 240volts to support this. Which generator do you have?
@@MyBluetti I have Honda EU2200i and 2200i Companion but they are not capable of 240 volts. The max output is 30 amps when paralleled together. My goal was to 1) build a system that could support the whole house load during a loss of grid power () and then 2) in the near future add as much solar as my property can support. I realized too late that I needed split phase charging during a grid outage but it sounds like there are some workarounds with T500s to solve that problem.
I have just purchased this same system and will ship shortly. Has the charging issue in split phase mode been resolved or is it still outstanding? I’m hoping they have a firmware fix generally available.
My challenge is that I am totally off grid running my RV. The 240v well pump and 15k air conditioner are the main things that will surge when it turns on. I have gas generators as my backup to charge batteries if needed . I guess I will have to test the surge handling when I install it on site.
@@MyBluetti I'm looking to get the D050S to get extra solar charging for the B300 batts. I'm sure the AC300 doesn't see this extra solar power charging so it's not included in the data for the total amount of solar charging report, right?
Australia doesn’t have Split phase at most domestic installations it’s single phase to the house and three phase running down the street. You do not need this second unit in Australia.
I am sooo upset at Bluetti. I just noticed that when in split phase after utility power gets restored it looses 5 seconds of power on the AC output side. So a 1 second power loss on utility power turns into 5 seconds by Bluetti. My 20k setup 2xAC 300’s plus 8 B300 and the smart home sub panel in split phase can for sure no longer be called a UPS. Where is the power loss protection in all this. What a joke. Bleutti confirmed this in an email. Buyer beware.
Hi Andy - Yes you are correct. In split-phase mode the UPS feature does not exist. I believe this is due to the grid pass-through. When the grid power is restored both AC300 need to sync and match the grid phases for their output so that the grid pass-through can work. I wish Bluetti would get rid of the grid pass-through feature and just allow the grid to charge the batteries and let the batteries service the loads. What I did as a work-around for the UPS issue was to use the T500's that charge the battery directly. I put the T500 on a smart outlet that controls when the batteries get charged and when the drain. I will be covering the UPS and other items in my upcoming video that reviews the AC300 in split phase mode. The system is a different beast when ran in split phase.
Hi Andy - it would be no different than charging your unit through the head unit (AC300), you're still cycling a portion of your battery. I have been working on a home automation that monitors my batteries individually and enables the specific T500 needed to charge, when needed.
@@MyBluetti yes but only if you cycle them daily .. i don't do that on the general UPS feature. MY batteries are always full and are on standby to be discharged when power fails. so i may cycle them 1x month or less. vs. Your daily cycle. Unless i misunderstood your approach
This use of T500's to directly charge the batteries as a work-around for the AC grid charging issues, especially when combined with the smart plugs to control when charging should take place is an elegant solution to preventing drain down overnight when using medical equipment AND the big draw of AC at the same time. I used to have to transfer the AC over to grid power at night manually then remember to transfer it back to solar in the morning. I wasted a lot of good solar power forgetting to do the latter. Now it's all an automatic process thanks to your wonderful work-around with the T500's feeding just enough into my battery banks to offset much of the draw and keeping my system running 24/7 without ANY attention from me. BRAVO! Thank you so much for sharing your knowledge and ingenuity.
I'm very glad that it worked for you and that you're able to add just enough power throughout the night to make your batteries last.
Excellent content, great clear, concise narration, outstanding video quality, just what the Bluetti geeks need, as there is little to nothing like this from Bluetti Keep up the good work.
Much appreciated!
Thanks for the detailed explanations and your work with Bluetti! Watching with interest as you work out issues so that I can bring my systems into split phase.
Thank you! Please let me know if there is something specific that you need help with.
@@MyBluetti I just got a GS10. In its manual, it identifies several devices it’s not compatible with, including some compressor based devices. How did you determine that the GS10 you have on your freezers would work, whether on house power or AC300 power?
I have a similar setup for split phase service, using the two AC300 units, six B300 batteries, and the P030A Fusion Box. But my transfer switch is not ahead of the AC300 input but at the Fusion Box output. The AC300 can gets its 30A 240 VAC power from a 40 A circuit breaker directy to my utility panel. So when I transfer my home from the utility to the AC300 split phase source, I never get any problems. I am supplying my AC300 setup power from PV panels, therefore, I never suffer any utility power failures. And I leave the 40 A breaker off unless there is a heavy cloud cover and my PV panels cannot charge my B300 batteries during the day.
Hi Raymond. Thanks for sharing your setup. Just so others are aware and they don't assume, you can not use your Bluetti to back-feed a panel that is actively powered by the grid at the same time. The Bluetti is not designed to sync with the grid and its phases. Secondly, the use of an interlock device is required with this type of setup. Besides that, yes this type of connection is pretty standard for "generator" hookup and is an option as well. I actually do have this option in my main panel too through an generator inlet.
Great video... Thanks again... Learning from you
Fantastic... I'm a total newb... And your videos very helpful!
Love some insight how you have your solar set for that setup. Seems a couple of us have same.
I have 3 pv350... And want some hard panels. Live in SC with fulllllll sun
Hi Jim - Thank you for the feedback. At the moment my 12 panels (400 watts each) are sitting in my garage. They are about to be installed on my roof as soon as my solar disconnects arrive. I will have 4 arrays with 3 panels each providing the max solar input of 1200 watts per PV input.
@@MyBluetti which panels did you go with... I keep ping ponging around ... I'm looking at renogy 320 (16) going with ground mount (rack)
@@MyBluetti th-cam.com/video/hZYODD7QURY/w-d-xo.html
David, would you check out my videos and PLEASE help me... I'm pretty set up with same as you. Thing I rewatched on this video was you're having to power batts with the chargers vs ac300s. When trying to run on batteries alone it drops to 100watts on master and 100 slave and house literally loses power most places and blows led bulbs etc... Switch works as intended with full power thru ac300 and from utility it's only when trying batteries only...
Been going back and forth with bluetti and he keeps telling me electrician... He even told me the split phase wasn't intended to be used as UPS? Um those are only working options?!?
Any advise would be great thanks
Thank you for your videos. I am leaning towards the Ecoflow Delta Pro setup with the 50amp Double Voltage Hub (7200w Inverter Continuous/14200 Peak). With Bluetti delaying the 50amp fusion box for the AC500 concerns me but the thought of 10000 continuous with a 20000 peak gets me right on the line with my need and worth the wait.. maybe
I'm hoping to have an answer on the AC300 if they fusion is even required... before I got mine I was just using a y-adapter to merge the two AC300's into a single 240v cable... it worked fine, but I need to confirm that the fusion doesn't do anything special... if not, I would assume that the AC500 would work the same.... and a y-adapter can be used to create 140v 50amps. I would also need to get my hands on one and test if the 50amp outlet is 120v or 240v. If it's 240v from a single AC500 then that complicates things.
How do you have your Solar set up to charge both the master and slave batteries at the same time from a single bank of panels or do you split them to feed both the master and slave AC 300's?
Hi Grits - I have 4 separate solar arrays running at a max of 1200 watts each. The AC300 have two solar inputs, therefore each AC300 is getting a max of 2400 watts of solar each and 4800 watts in total over the whole system.
Great info! Did you ever find a solution for the AC300's tripping under surge loads? I just setup by AC300 split phase system and I'm having the same issue. Thanks for all the detailed videos! They are awesome!
Wow, excellent video! Give me something to aspire to. I'm new to this, I have a AC200Max and had an electrician over and they installed a Nema 14-50R. I can't find much resources on how to connect this to my generator. I plan to add additional batteries, but any suggestions on how to connect them? They don't make a male TT30 to a male Nema 14-50R cable lol I'm missing something.
David, Great content, thank you.
You mention that you can charge both B300s from one T500 connected to a smart switch?
Meaning that 500 watts is more than enough for your load and you can add charge to one B300? Or, will the B300 that is not connected to the T500 actually charge as well (load permitting)? Batteries do not balance charge state, I think? Thanks
Hi Bob - I'm not sure I understand your question completely, so please let me know if my reply does not answer your question.
A single T500 is only capable of charging a single battery. In my setup I use the smart-switch to control when the T500 is turn on and turned off. This allows me to turn on the T500 when needed.
Thanks David. Your videos are the only reason I was able to figure out why I couldn’t get into split phase. thank you!
You're very welcome. Please let me know how else I can help
Out of my budget range !
I know you are using the Y cable to combine the 2 AC300s. Do you still recommend this over the Fusion box? And do you have a link to the y cable? Thank you so much for your videos.
Hi Toxic - I used this TT-30 to 50Amp Y-adapter: www.amazon.com/gp/product/B09HV8KB24/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
If you need a 30 amp output, then you'll need to get an adapter:
www.amazon.com/gp/product/B09P19XHJD/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1
I'll try to put together a quick video that goes over this.
I put this question on another one of your Split-Phase videos. And thank you again for your videos.
I have been running a single AC300 with no problems. It feeds a Generac Transfer switch. The AC300 only powers the transfer panel, nothing goes to the grid. I use PV priority mode and a 110v outlet feeds the AC300 if the batteries get below 15%. I am going to bring in the second AC300 using the communication cable and Y-cable like you use. According to Bluetti I can still feed 110V from the grid to each AC300 for when the batteries drop below 15%, but each AC300 has to be fed from a different phase from the grid. I have run a circuit from each phase and each one feeding it's own outlet. Two 110v outlets, 1 from phase 1 and the other from phase 2, Obviously one will feed the master and the other will feed the slave. You have talked about problems when feeding from the grid. Is this still an issue? I do not have large draw items on the transfer box. I will also balance the loads to each leg. I have never gone over current and rarely have a draw over 2000W. Normally It draws between 300W and 900W. There are 2 refrigerators and 1 small freezer. I will probably limit the grid draw to 10 amp max. The grid will only be to maintain the least amount of power needed until the solar panels start charging the batteries back up. Unless we have several really cloudy days I never pull anything from the grid for the AC300. I really want to use the AC300's automatic use of the grid when necessary. I would rather not have to use the T-500's to directly charge the batteries. I do not have the automation like you do. And again, the single AC300 if working perfectly, pulls from the grid if necessary, neutrals are separated and all that. I would really like to hear your opinion and possible problems on feeding the Dual AC300 240V setup from the grid. Thank you so much for all of the videos you have made and all of the time that has gone into them.
Here is the most current video from Bluetti for connecting the dual AC300s
th-cam.com/video/aDLxv5oM5kg/w-d-xo.html
Hi Toxic. So the short answer is yes there is still an issue with the AC300's when running in split-phase mode, when you have them connected directly to the grid.
I hate to say that I don't expect Bluetti to be able to resolve the issue with the AC300.
The issue for me and many others was when the AC300, running in split-phase mode, and connected to the grid would "trip" and reset itself when the medium to large loads occur. The only solution I found was the use of the T500's that you mentioned, which provided power to the systems batteries, without the head-unit know about it.
For myself, I upgraded to the AC500 and was initially afraid that it would experience the same issues as the AC300. However, I was pleasantly surprised that the AC500 worked flawlessly. I plan to sell my AC300 to someone who only needs a single unit, in which the AC300 works great in this mode.
I wish I had better feedback for you.
@@MyBluetti Thank you for your answer. Maybe Bluetti should replace my AC300s with AC500s. What do you consider medium to large loads? I would only expect 700W constant which could cause a 1000-1400w spike. I'm afraid that is going to be in the medium to high range. I just don't want to see the smoke coming out of the AC300.
How do you find the standby power is. Was thinking of buying these. But from my research, on paper that would waste 120 watts per hour just to power both inverters for AC. So thinking better to wait for the Ecoflow delta pro ultra and also get the full 30 amps?
You mentioned the AC500. I just purchased my AC300 with single B300 and two PV350's. My goal was to scale up as time and budget allowed. Do you feel the AC500 will be compatible with the AC300? I guess I'm trying to figure out a strategy from here. Let me know your thoughts.
Hi Joseph. From what I understand, your current B300 batteries will work with the new AC500. You'll just need replace the AC300 head unit to bump up to 50amps service. If you need split phase then I would assume they'll have a new 50amp fusion box.
@@MyBluetti thanks for the reply. Maybe I'll just devote the AC300 entirely to my RV then and start over for the house units.
For 230V/50A service, you'll need TWO head units with each needing a dedicated battery or more, a very expensive proposition.
Great videos - thank you. One question about your Generac 9854/9855 manual transfer switch. Since I'm easing into this, I have just one Bluetti AC300 at the moment (so no 240 volts), and I want to run it as a separately derived system (as you've been advocating) using a switched neutral transfer switch. I was planning on wiring the single hot wire of the AC300 generator output to both the L1 and L2 connectors on the generator side of the transfer switch, and then avoid the use of 240 volt double-pole circuit breakers, and then also put a warning label on the transfer switch about what I've done so that no one mistakenly adds a double-pole breaker later on thinking they'd get 240 volts. My understanding is that this should work fine a truly manual transfer switch with no electronics. However, according to the Generac 9854 manual, the electronic control switch you talk about in your video (at the 14:23 mark) won't let you switch to generator unless it detects 240 volts from the generator. So I'm wondering if you've ever found a way to trick the electronic switch into letting you switch to generator mode even if there's not 240 volts present (i.e. defeat this feature of the switch). I figure you may have had a similar problem if you ever tried to use your transfer switch with just one of your AC300s, but maybe you haven't done that. I think I could avoid this problem with the Reliance X series, but they're not available due to supply chain shortages. If the Generac 9854 can't meet my needs for my single AC300 setup, any other ideas (besides the EZ switches)? I'm really struggling to find a switched neutral transfer switch, or any other 3 pole transfer switch that's appropriately sized. Thanks.
Hi Doug - So let me first say I'm not an electrician. So please take what I say with a grain of salt. With that said, I would think that you can bond L1 and L2 together on the "generator" side. However, make sure that you don't accidently expose this bond to the grid side. This also will only work if you have "one ac300", you "can not do this with two ac300" as you will over-load your neutral wire that returns to both units from the transfer switch. Also you need to ensure you do not install any multi-branch circuits in your transfer panel when you bonded the L1/L2 together (shared neutral)... this will also cause an overload of your neutral wire because they'll be on the same phase.
I have never tried to switch my Generac transfer switch over when it's being powered by only one leg or one phase to both legs. I would assume the transfer switch doesn't actually look for 240v, but it just looks that both LEGs are powered. In any case, there is a manual failover switch that you can flip as a backup to the electronic switch if it won't flip over. Generac is great about answering questions, I would give them a call and ask them to confirm.
@@MyBluetti Thank you for the quick reply. I'll try giving them a call here soon and will let you know what I hear back. I knew about the manual failover switch you referred to, but in the manual they emphasized that you shouldn't toggle that switch under load, and it's a bit trickier to access, so it's not nearly as ideal. Thanks again.
Sorry… but not up on all the specs and things. But I’m looking to get a 50 amp switch for my house. I have a propane generator 13000 Watt that I would use for major emergencies and power outages, but I also have one AC 300 and looking to get another one. I would like to connect them just like you have in your video in split phase but I’m wondering on the fusion box where you have, the cord coming out of it is that a 50 amp cord plugged into a 50 amp switch? Any help would greatly be appreciated. Thank you for your time.
I have a question maybe you could answer. Thinking about getting the 300 but want to know if the battery is charged and you have it hooked up to 600W of solar will that extra go to run the things you have plugged in or is it just wasted because your things can only run from off the battery. Thanks in advance:)
I would have to test this... but I believe if your batteries are 100% the power produced by the panels or grid (if connected for grid charging) will pass-through to your loads. I know that's how the grid charging works, but I will need to verify... I'll circle back to you.
@@MyBluetti Pass through charging is different as it merely lets you "use the battery" while it is charging at the same time. My question is can the extra solar coming in in excess of that charging the battery that be used by the loads?
@@legaleagleandpaws8198 correct. I'm just saying that I've only verified the grid side. I will need to check on the solar and if the excess is passed to your loads or not.
@@MyBluetti Thanks and I' looking forward to it!
I have another question for you. My B300s are full by 1:00 on a good sunny day. I was thinking about charging a 12v 200ah Battery and let that battery send power to my 4 D050S enhancers which would put 100w into the B300s for several hours every night and I should rarely need and grid input. Unfortunately this could discharge the 12v 200am battery too far. Or the 12v 200ah could run and inverter and run 2 T-500s for a couple hours and get the same wattage into the B300s. I could control the inverter with a smart switch on a schedule and only discharge through the T-500s when I choose. Can the 12v 200ah battery be charged from the 12 30a RV port on the AC300. Technically I could have one on each AC300 and be adding nearly 5000wh to the system. Can the RV port go straight to the 12v 200ah or would t need to go through a DC to DC 30a charger. Like you have said these things become a monster with a crazy amount of wires. I just hate to waste 4800W of solar when my (4) B300s get full on sunny days. I know I could add 2 more B300s, but I would rather spend $1200 on 2x 2400wh batteries (that I can also move use somewhere else) instead of spending $2000 on each B300s. I'm trying to figure out fully or semi automated ways to store all of that solar. Once again thank you for getting back to me. I really appreciate all of the things you have gone through and tried to find what works well and what does not.
Welcome to my world. I fill up my batteries on a good sunny day by 11am. Therefore I've been swapping circuits in my transfer switch to hold larger loads.
The biggest issue that I've seen with the 12v outputs, especially the cig output is that it gets extremely hot. I had tested moving power from the AC500, being my primary system, and pushing the extra solar to my AC300 environment using the 12v cig port. This is when I found that it became very hot. Enough that I stopped doing that....
Alternatively to the 12v, and even though it will result in a bit of a loss, I would use the AC ports to move power to another storage unit. I know of someone else who uses T500's between he's AC500 and AC300 system to transfer solar power between Bluetti's. Even though he does get a lose by converting to from DC/AC, then AC/DC, it's better than rejecting the solar power because your Bluetti is full.
Thank you for your video. I have 2 Ac300 each with 4 B300’s plus the smart panel from Bluetti but once plugged in. One of them did not receive AC power anymore. Could the reason be that the the units where not yet set to split phase? I am trying figure out why it is not working. As all cables are from Bluetti. And I had a trained electrician install it
Hi Andy - sorry for my delay in getting back to you. So what do you mean that one of them did not receive AC power anymore? Are you saying that you have your AC300 connected to the Grid for AC charging? In any case, yes you will need to enter into split phase mode when you connect to the Smart Home Panel. Make sure you have your communication cable connected and then set one AC300 to master and the other AC300 to slave. The units may throw an error for a few minutes while the setup the split-phase.
@@MyBluetti thank you so much for your reply. Yes for some reason when in single mode and the smart home panel connected. AC input on one unit will not see AC in from the grid. Only one unit shows as charging from grid. The other unit has 0 watts draw from the grid side. I don’t have solar yet. My guess was that something is wired wrong. But all the cables are already pre wired so how could it be wrong. Unless the smart home panel is wired wrong. I read something somewhere. But maybe that was another issue altogether
Do you have an outlet tester or a volt meter? If so, can you test that the AC output of both the AC300's is enabled and sending power at the outlets on the face of the AC300 unit.
@@MyBluetti thank you I can check and see if the output on the unit will show the power. But my problem was on the ac in to the Ac300 (one of them) although the 3 pin plug has the power available (I measured) the ac300 does not recognize it. So it shows as No power coming in on the Ac side
@@MyBluetti thank you for your input. I have tested it and there is voltage. I have just gotten a AC300 replacement from Bluetti and it now shows voltage coming in. so on that end i think i am good. the last unit i had threw an error 008 and it was useless as it no longer worked when i plugged it into the smart plug from bluetti.
My question is on the plugs of the Smart plug (the ones that connect to the AC 300 Power out ports) i currently have only the left unit plugged in ... should there be any power on that plug itself. I am afraid of causing another error 008. As this happend the first time i plug the second unit in. It might be something else. But before i go and plug it in i rather test it first. thank you for all your thoughts on this. There is so little information from bluetti to understand this more. I am still waiting to hear back from them about my issues. You are much more of a help then i got from them. Besides sending me a new unit.
I have AC300’s. Supposedly they updated the physical units to address the wall input power/sync issue. When did you get yours? Mine were launch units and one exploded when plugged into the grid and “power loss” and then resumed power. I also have the generac transfer switch.
You have some real practical advice here. I have a question about split phase. Do you believe I could add an AC500 to my existing AC300 and do split phase power? Thanks
Hi David. I don't believe you can. The two units must sync with each other over the communication cable to create split-phase... And I believe the two units must be the same model.
Thank you for this video. I also have two AC300 with 2 B300 batteries for each. I just had a couple of electrician come out. The second one wants to put in another interlock system for the Split phase. I have an interlock for my portable gas/propane generator. So if would not mess with the interlock system for that, and then have another interlock system to either use the AC300 Split phase or the gas/propane generator. Where did you purchase the extension cords?
Is your current interlock system a different size? If not, you should be able to use the same one for either gas or solar generator. Which extension cables are you referring too? Yellow TT-30 cables?
@@MyBluetti I don't know what you mean different size. Not sure what they are going to do. I am going to get a third electrician come out and give me an estimate. The second electrician said he would put in another panel with an interlock switch, and that I would have to switch between gas/propane generator and the Bluetti AC300 Split phase. The first electician didn't know to much and the company is having another electrician come out and give me an estimate. Yes. Where did you get the Yellow TT-30 cables?
1 AC300 + 2 or 3 battery packs
In this case, will the battery packs consume power at the same time?
Will the battery packs keep balance with each other?
You would think, but they don't. They stay close to each other in most circumstances, however I have seem them vary by 20%.
I used mine for the first time today. I am a bit confused. I hooked everything up as per instructions. But the system ran the battery on the master from 88 to 0. The slave battery ran down from 98 to 86. When the master battery hit zero it shut the system down. I assumed that both batteries would be in play. Two AC300 units each with one battery pack. Any ideas what I did wrong.
Hi Boone. It doesn't sound like you initially did anything wrong, but let me explain. The Master and Slave are completely separate systems. They do not share power, nor keep themselves balance with each other for the load their are providing power to. The only thing that is shared between them is the communication cable, which causes the master and slave units to send power in opposite phases (+120 and -120). This is a requirement to create 240volts, when needed.
If your master drained faster than your slave, this means that you have either too many loads on attached to your master or the loads on your master require more power.
Can you tell me how you're connecting your Bluetti's to your loads? Is this through a transfer switch?
@@MyBluetti Yes it is. Simply shutting the grid off and turning to the gen side. I assumed that since both sides were joining into one L14-30 that the power was coming from both units. You know what they say about assuming. Lol.Thank you.
We were only pulling 85 w consistently. Until the furnace kicked on then we were pulling 525. We had very little on because it was from noon until 1:47. One led t.v. One oxygen machine and one light.
@@MyBluetti sounds like I went about the setup the wrong way. Looks like I will have to spend more money on more battery packs. 2 hours is not going to be long enough with medical equipment involved.
To grid chare the w units they make a splitter that's 220 s split to 110 in onbothmasfer and slave units then you plug it into 220 30a outlet them you can grid charge in dual phase. 😊
You mentioned in a previous video that you would only recommend using X-Series Reliance transfer switches. I would like to ask why?
Also, I have the AC500 with 2 B300s batteries (with the plan to expand to four batteries in the near future) and want to run 120v equipment at present. The idea being that I will get another AC500 and run split phase in the future. What 50 amp, 10 circuit manual transfer switch would you recommend?
Do you have to have 4 batteries for split phase setup? Will it error if you only have 2?
I have 2 AC300’s I bought the BLUETTI power cord and it’s 4 prongs. I was wondering is it 220 volt or is it 115 volt ? Do I need to put it on separate fuses or can I wire it up as 30amp 2 post breaker?
Have you looked into wind turbine cable I saw on one of Bluetti videos.
I've been waiting for this myself... I haven't see anything on it from Bluetti. I would love to add this, especially since the side of my home is a wind tunnel!
@@MyBluetti hey quick question for you. If I wanted to run my Electric water heater with a set up two batteries bigger than yours split-phase what's the best transfer station I should look into? I have 4 big loads
Hi, I have the 2 AC300 / 2 B300 / P030A system at my off grid cabin so that I can get 220v to run a deep well pump. In June I set the system up in a temporary location. After a couple failed attempts I was able to get the split phase function to work and the system ran great until this weekend when I moved it to its permanent location. After the move I haven’t been able to get the AC300’s to accept the split phase. Any suggestions of what I may be missing? Thanks
Jim Barker
Hi James. Are you getting any errors when you try to start split phase. Also check your communication cable and ensure that the large tab on the connector is point up to match the input of the AC300.
@@MyBluetti
Hi David,
Thanks for the reply. I corrected one end of the comm cable and tried to initiate the split phase again, but errors 024 & 061 on the Master and error 061 on the Slave displayed. Any thoughts? I’m trying to contact tech at Bluetti, but haven’t had any success. Thanks
The two errors you are getting are usually caused by improper grid phase requirements for split-phase charging from your wall ac outlet. This is usually because you're using the 15 amp cords that came with the AC300. For more information on the wall ac outlet requirements please see my other video: th-cam.com/video/l1haUsklLKE/w-d-xo.html
You can also try to enter split phase with your AC300 disconnected from your grid's outlet for charging and see if the errors go away.
Hi David,
Unfortunately that wouldn’t apply here as I am off grid and only use the solar panels for charging. I have also tried to enter split phase with everything unplugged from the AC300, ie cables from the panels and the cables going to the fusion box. Would there be any benefit to resetting it to factory settings and trying again? Thanks for your efforts.
Hi,
After checking the unit I decided to try and reseat the communication cable again and after that the split phase set up smoothly! Thanks for all your help. Now I can get on with my life!
OK, maybe a dumb question... Why are you using grid charging to the B300s at all? Is that just for testing purposes? If you are using grid charging, you may as well be powering your appliances from the grid. What am I missing?
Hi Jeannine - The AC300 has multiple applications that it can be used for:
- Obtain power from solar panels only and go completely off-grid for your circuits.
- Obtain power from solar panels and allow the AC300 to use grid pass-through to handle large loads/spikes.
- Primarily run off solar, but set a battery minimum and allow the grid to maintain x% on the battery
- Run the AC300 in UPS mode to, by allowing the grid power to store on the batteries and allow grid pass-through to keep your circuits running. In the event of power outage the AC300 will continue to keep the circuits online.
Hi David,
great channel!
So I was planning on getting the new solar generator AC500 because it has 14-50 (50 AMP) which can charge EV vehicles. I was notified by Bluetti though that it is 120V which is going to charge the car very slowly (. Is there a way to make 14-50 240V to get level 2 charging which will charge the car faster?
Do you think It’s possible for Bluetti to put in 14-50 240V plug instead of 14-50 120V in their future AC solar generators?
Thank you!
Hi Sevak - the only way for you to get 240v out of the AC500 (or even the AC300) is by getting a second AC500 and pairing them together via the communication cable. The communication cable allows the two unit to create each phase required to create 240v. Outside of that a single AC500 unit was only every designed to product 120 volts.
👍 I see what you saying, I got your point 👍 I’m waiting for EP600 and B500 that has capacity up to 78 kwh that’s going to lunch in November! Hopefully it has the features I need cause I can see myself running into the same issue of having too many wires around the generator
Hey David, can you use the ac300 as a complete house ups sistem? With a solar input for lowering the electricity bill?
Hi Emmanuel - Yes and no... and depending on your home requirements for power and the setup of environment...
To better explain the UPS (uninterruptible power supply) term should have not been used by Bluetti, as their AC300 system will maintain power to your loads when the grid power fails (40ms failover). However, when the grid power returns, the AC300 will stop power to your loads for a moment (1-2 seconds) to sync up with the grid phases, etc... therefore the process is not a "uninterruptible power supply". I do believe they have room to fix this issue with software coding, but at the moment this is even an issue for my environment.
A work-around:
Myself and a few other people have added Bluetti's T500's to our system. These T500's directly charge the batteries from the grid and bypass the AC300 head unit. This allows the grid to come and go without affecting the power going out to the loads. There are a couple of draw backs to this work-around though: 1) No battery management. 2) Only 500 watts of charging per battery, per T500. 3) Constantly charging, unless you add a smart outlet with a schedule.
For my environment, which is running 50% of my home and running 24/7, I have x4 T500's running on schedule that is controlled by smart outlets. These outlets have been programmed to turn on the necessary number of T500's when solar is low or unavailable. To my surprise, I normally only need 500 watts to each AC300 and I never fall below 60% for my batteries. During low power usage in my home the batteries will charge right back up to 95%+
Please let me know if this answer your question or if you have further questions.
@@MyBluetti From my understanding of what you said it can be used as a UPS if it is configured in a way that obtain power from solar and allow the head unit to use grid pass through to handle large loads (I saw one of your replies in another comment) and charge the batteries directly without the head knowing with the t500? Can you explain the battery management part?
I am new to solar, only have a certain knowledge about the topic. I want to use the system in my apartment where I have limited space for pv panels in my garden, only for maybe 4 conventional panels and would only use for the 120v part.
Yes you are correct. Charging with DC sources, such as solar into the head unit or using the T500 to charge the battery directly will allow your system to stay on 24/7 and not be effected by grid outages.
So the AC300 has a BMS (Battery Management System) that monitors the batteries and will charge/discharge the batteries beyond what you configure it for. When you charge with the T500's it will simply charge the battery until full and has no management. However I have setup my T500's to run on a schedule that is controlled by a smart switch. Twice a day I let my batteries drain for an hour and give the T500's a break.
A few questions David. 1) Can I charge one of my two AC500/B300S sets while operating in split phase mode? In a power loss situation, my generator cannot supply split phase 240V but it can provide 30 amps at 120V which could charge one AC500 at a time. 2) If while operating in split phase mode, I use a T500 to charge one B300S and a second T500 to charge the other B300S, do the two T500 have to be on different phases? That of course assumes the T500 is compatible with the AC500/B300S. Since its going direct to the battery I wouldn't think so but I had to ask. 3) Is it better for the batteries to charge at the lower rate of 500 watts than at 3600 watts (30 amp 120V)?
Hi Marshall - Let me make sure I understand your question. You have two AC500's, but only want to charge one via the grid while in Split-Phase mode. Is this correct? Concerning the T500's, this is my preferred way to charge a system in split phase, and yes, it works with your B300S. If you charge through the head-unit (AC500) the UPS feature is not available. However, if you use the T500's the system will maintain power to your loads even if the grid power goes down. There is no requirement to have the T500s on different phases.
I will be doing a video soon on the T500, as they are a great resource to have.
@@MyBluetti The question regarding only charging one at a time was when the grid is down. I can provide 30 amps single phase with my Honda generator so I can't charge in split phase mode. So I was wondering if I can charge one at a time from my generator while remaining in split phase mode? Is there an AC adapter specifically for the AC500 or B300s? I don't see one on the Bluetti web.
The answer to your question is yes. You can charge one at a time if needed, while in split-phase. Alternatively you can charge both at the same time if you lower the "max input" rate to something your generator can handle. The only special power adapter you would need, outside of the 15 amp power cable that comes with your AC500, is a split-phase charging cable. However your generator must be 240volts to support this. Which generator do you have?
@@MyBluetti I have Honda EU2200i and 2200i Companion but they are not capable of 240 volts. The max output is 30 amps when paralleled together. My goal was to 1) build a system that could support the whole house load during a loss of grid power () and then 2) in the near future add as much solar as my property can support. I realized too late that I needed split phase charging during a grid outage but it sounds like there are some workarounds with T500s to solve that problem.
I have just purchased this same system and will ship shortly. Has the charging issue in split phase mode been resolved or is it still outstanding? I’m hoping they have a firmware fix generally available.
90% of it has been fixed. I'm waiting for her lastest firmware to test. There is a workaround by using the T500s to charge the battery directly
My challenge is that I am totally off grid running my RV. The 240v well pump and 15k air conditioner are the main things that will surge when it turns on. I have gas generators as my backup to charge batteries if needed . I guess I will have to test the surge handling when I install it on site.
If you're running off the batteries most of the time you'll have no issues with handling the loads. I'm running allot more than that
@@MyBluetti I'm looking to get the D050S to get extra solar charging for the B300 batts. I'm sure the AC300 doesn't see this extra solar power charging so it's not included in the data for the total amount of solar charging report, right?
Are you still creating videos? Didithe split phase issue get resolved?
R Thomas
I haven't focused on the AC300 since upgrading to the AC500. However, I'm not aware of them fixing the issue... unfortunately.
Australia doesn’t have Split phase at most domestic installations it’s single phase to the house and three phase running down the street. You do not need this second unit in Australia.
I am sooo upset at Bluetti. I just noticed that when in split phase after utility power gets restored it looses 5 seconds of power on the AC output side. So a 1 second power loss on utility power turns into 5 seconds by Bluetti. My 20k setup 2xAC 300’s plus 8 B300 and the smart home sub panel in split phase can for sure no longer be called a UPS. Where is the power loss protection in all this. What a joke. Bleutti confirmed this in an email. Buyer beware.
Hi Andy - Yes you are correct. In split-phase mode the UPS feature does not exist. I believe this is due to the grid pass-through. When the grid power is restored both AC300 need to sync and match the grid phases for their output so that the grid pass-through can work. I wish Bluetti would get rid of the grid pass-through feature and just allow the grid to charge the batteries and let the batteries service the loads. What I did as a work-around for the UPS issue was to use the T500's that charge the battery directly. I put the T500 on a smart outlet that controls when the batteries get charged and when the drain.
I will be covering the UPS and other items in my upcoming video that reviews the AC300 in split phase mode. The system is a different beast when ran in split phase.
@@MyBluetti that is a good idea.. but that would charge/discharge your batteries daily and thus shorten the life cycle right ?
Hi Andy - it would be no different than charging your unit through the head unit (AC300), you're still cycling a portion of your battery. I have been working on a home automation that monitors my batteries individually and enables the specific T500 needed to charge, when needed.
@@MyBluetti yes but only if you cycle them daily .. i don't do that on the general UPS feature. MY batteries are always full and are on standby to be discharged when power fails. so i may cycle them 1x month or less. vs. Your daily cycle. Unless i misunderstood your approach