Calculating Wire Ampacity.
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- เผยแพร่เมื่อ 30 มิ.ย. 2024
- This video digs into how we calculate the ampacity of wire using the 2018 CEC. While this is the Canadian code, the principles are the same. If you use the NEC make sure you comment below and let's compare the codes.
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btw this is by far the most helpful videos I have ever seen and helping me study for the red seal examination! thank you so much
Explaining the code in conversational English…finally. Thank you so much.
OMG thank you for this because i have been having a hell of a time finding good videos on this for the CEC...
This has been insanely helpful despite me having the 2021 Codebook for my classes. You are a life saver, I might consider showing my teacher this.
This has been insanely helpful despite me having the 2021 Codebook for my classes. You are a life saver, I might consider showing my teacher this.Loved this video! thanks! we need more Canadian content!!!
Thanks very much for doing these videos. I’m waiting to complete my final year of school and this will be my first year in the 2018 code book so these are very helpful.
Thank you chad! Im currently in my CEF class and almost given up right away since the explaination was quite different your way was simple and methodical.i hope i could get more videos from like this to follow your footstep.
Hey man! How am I just learning about your channel now?!?!?! Solid work!
Thanks Rob! Coffee soon?
I used this video to help with problems. Had to adjust rules used for the 25th edition slightly but this was spot on. Thank you for the video @Theelectricacademy
Loved this video! thanks! we need more Canadian content!!!
Incredibly helpful and great walk through on the example questions
Thank you. It was extremely helpful and in a simple plain explanation. I appreciate your time on this subject
Good explanations, 4-004 broke my brain on first read and this really helped.
I just did a free air job
I ran 100 amp feeder to garage because the entire backyard was paved
Basically to service mast with Ariel cable 2 hots neutral and aerial is ground
Dav Cot did you run it with neutral supported triplex?
great job I'm LEARNING and the best part I CAN PAUSE!!
Hello dear sir.
My name is Max, i saw your video and i want to tell you thank you very much, you explained so well
(i have a low level of English and i understood more than 90 percent of what you explained),
Please believe me you one of the best teachers which i met in my education time
(i have education from Ukraine and Israel i have bachelor degree electrician and electrotecnica)
now i would like to pass an exam in Canada. If all teachers would explain as you may i would have a doctor's Degree.
Thank you., I now know how to de rate conductors when there is more than one de rating situation occurs.
You are a living legend
Im in California I like your video I hope you make many more Im traying to educate my self in the electrical field anthis is a great way to obtain a lots of knowledge thanks.
Glad you liked the video. Make sure you check out the rest of them and please let me know if there is anything you’d like to see added.
Keep up your studies. Plenty of info on Utube. Good luck and enjoy.
Thanks a ton! I missed 2 weeks of prints class and had trouble wrapping my head around the book, especially when calculating for multiple conductors with a higher ambient temp than 30 Celcius.
Used to work at a nuke plant. Free-Air is literally hanging the cables from the ceiling. We had to do it for temporary power. Except it wasn't always so temporary. The cables are Clove-hitch tied to beams and dangling.
Thank you so much
You are a greater teacher
Please make some more videos on canadian electrical code 🙏🙏
Hey Chad , thanks for the video! I've been going through the CEC again in prep for my license exam (I work out of Toronto). I've been sort of struggling to find clarifications or examples of the conductor sizing for larger single conductors and cables using the D8A through to D11B diagrams and tables (and their larger counterparts D17A-D17N) for direct burial, underground run, and raceway.
Could you provide any suggestions or resources? I'm particularly trying to understand if the same derating factors for temperature and such (5A-5D) apply to these calculations.
Thanks in advance, keep up the great content.
Hey Chad. 4-004 1)a) gives the spacing requirements for free air cables. Typically, individual conductors ran in a cable tray or unistrut rack (with appropriate spacing), are calculated per Table 1 or 3. I saw comments on tri-plex and O/H service. Neutral supported conductors are covered in Table 36 A and B, and the O/H Service side is not under CEC (Hydro sets those limits). Hope this helps some of the guys here.
Awesome! Currently doing my schooling for my FSR test. You explain the rules very simple and your examples are great. How about sizing the neutral, and cable tray conductor ampacity.
This is a fantastic refresher. Especially with going through level 2 during covid.
Where ya going?
North island college, in B.C.
Excellent Explanatory for using the codes
Ampacity is covered in Article 310 of the NEC, with the most used Tables in 310.15.Great videos, btw.
Steve McArthur thanks for the info Steve! I need to take an NEC course sometime
Thanks for the video. Great service.👍
Excellent video!!! I has helped me a great deal.
Great Video! Im trying to find max allowable ampacity of a 24awg conductor, but Table 1 only shows 14AWG and larger. Any idea where I can find smaller guages (for alarm and telecom) in the CEC? Thanks!
Watching this video makes me want to do work in Canada unfortunately it doesn't work too well to the NEC because everything is everywhere especially around ampacity
Very helpful. Thank you.
awesome video thanks man
Thanks for your video, I have a question. For ampacity of cables in cable tray, the CEC is clear, spacing > 100% cable diameter; 25%
Skip to 1:40 to pass the intro and the two, yes two introductions.
Haha. Good point. I noticed that after I recorded it. Next one will be better I promise. In fact I’ll put in a time stamp where the content starts.
Hi Chad,Thank you for the video
Great info . Thank you.
insanely helpful bro
Thank you that was really helpful
free air is when you carry it from meter ole to house in the air, or house to barn in the air, or the old style in very old homes where wires were on insulators and such.. technically, if you stable it to wood and do not cover the opening area it is free air
Hey, I have a questions on a tap conductor wondering if you would be able to lend a hand?
Thanks
Can you clarify regarding the neutral , if you have 4C Teck cable when de-rating do you count 3 or 4 , as the 4th conductor is a neutral ?
in example 5, why did you calculate based on#2 wires instead of #8 wires? I will be confused if I meet the same type of questions as this.
Do you plan on making any videos with the new CEC 2021 ?
I'm a first year airbrush and want to get something short and abridged as something to thing through and carry with me. I think I've seen the uglys guide in the states, is there an equivalent for Canada? Thanks, great videos.
Hmm. The closest thing to uglys in Canada is the handbook that comes with the code book I think. It’s a great idea though.
amazing really thanks for sharing
I could be completely off on this one but when I think free air I immediately imagine those exposed triple copper busses on overhead cranes
hi, thanks alot for the vidoe, my question is how come it says (base on ambient temperature of 30 degrees ) on Table 1,2,3 but then it divides columns to 60C, 75C and so on?
Running conductors on top of open ladder rack in a data room environment is considered free air
Lawrence Tinsley Yeah. That’s definitely an example. Have you done it?
@@TheElectricAcademy yes sir, for over 20 yrs, #6 - 750 mcm DC power distribution systems
This is awesome, my only question is how do you know that TW is 60"C??
Hey Electric is there a possibility you could give me some pointers on a few things for the electrical code book? I have a mid term test coming up in two weeks that is on voltage drop, pull box calculations and ampacity deration. I am scared shitless because i transferred into this program and kind of new to this whole canada electrical code book, and my professor is a bit of a hard tester.
What kind of pointers are you looking for? what program you in? What year are you in?
@@TheElectricAcademy i'm, in electrical techniques which is a pre apprenticeship program at Fanshawe college in London Ontario. One of the problems that was posted regarding voltage drop went something like this. A 7200 watt water heater operates at 240 volts and is located 20 metres from the electrical panel. What is the minimum TW75 conductor permitted to be installed for service to the water heater @ 2 % voltage drop. Those questions like that are kind of confusing and not sure what table to go to first when solving it.
The LE/FE course deals with free air. In temporary installs for movies and concerts.
The larger the diameter of the conductor (copper) the more free electrons?
One amp of current equals one coulomb of free electrons (6.24 times 10 to 18th) Thank You.
final correction factor would probably be cable trays
THANKS FOR SHARING IMPOTANT
Thank you!!!
Nice video! What about the length?
for example 5, there is 2 different kinds of cables with different kinds of temperature ratings, R90 & TW. you said the r90 has a 90degree rating and the. tw has a 60 degree rating? how do I know or where can I find what temperature ratings the cables have? is it in the code book or should it be known already?
This helped
I'm hooking up a 30 amp 110 volt outlet for a trailer which is just a little under 200 feet away from the panel. I'm trying to determine the size of wire to use. Can you help?
10awg might be perfectly safe. conduit.site/tables/table-310.15-b-16.php?option=cu
But the voltage drop would be excessive. So I would go with 8awg or even 6awg if you have anything that would not like the voltage fluctuations.
www.calculator.net/voltage-drop-calculator.html?material=copper&wiresize=2.061&voltage=120&phase=ac&noofconductor=1&distance=200&distanceunit=feet&eres=30&x=60&y=13
But I am not an electrician so take my advice with a grain of salt.
does your tables include metric wire yet?
Free air applications are common on railway passenger cars and on locomotives
hi , im having a problem finding the answer for this question here .
"Three 3-wire , single phase circuits are installed in a conduit passing through an area where ambient temperature is 60*C and connected to a piece of equipment with a maximum conductor termination temperature is 75*C . The conductor are No. 4 AWG RW90.
"? T2 is 85A and 9 wires on T5C 0.70 = 59.5 A / T5A = 0.58x 59.5 = 34.51 A . On my MOD , it says the answer is 48.29A .
If not in conduit, overhead raceways are typically free air.
triplex is free air, overhead feed to shop for example. Also hydro connections
True but the CEC has its own tables for triplex, duplex, and quadplex
@@TheElectricAcademy hmm, individual runs in a cable tray?
Yup. I agree.
Plz made vedio a in section 26 and 32 and 60 plz Thaks sir ..
In the NEC. It’s 310.16
I'm not an electrician, but I've fixed hundreds of problems caused by electricians. Reading the comments in here it's no wonder why. This is all super basic stuff and the fact people are having issues with it leads me to think they're heading down an incorrect career path. If you don't know this stuff, you should look at becoming an inspector - many of those guys like just making stuff up on the fly.
you're the man Chad
BCIT 🙌🏾
Hey man id really like some help id your around. Reply here id appreciate it im a first year student and abit confusedp
dose Canada use 60 hz
Yup!
could you send me the book
Which book?
NEC section 310
Just forget about AWG; just only think in mm2. Life gets much more simple...