Thanks for breaking it down like that. You’re explanation and delivery finally cleared up the puzzle of volt drop. I like the way you do it in bite size chunks instead of a big long formula all at once.
I enjoyed the video really clarified the calculations. The question I am left with is in Manitoba Breaker panels don't have a 90C breaker rating only 75C therefore even if we have 90C cable we are forced to use the 75C column for wire ampacity so what impact does that have on distance correction factor if the 90c cable rating is not allowed to be used because it is supplied by a breaker only rated for 75C?
Thank you for acquainted us with voltage drop calculation from CEC. Can you please make a video on how to calculate the number of conductors/wires that can be pulled in 1 conduit?
Excellent video , can you do a video showing voltage drop for larger wire over 4/0 . I am running acwu 300, 55 meters with a calculated load of 170amps from a power shed to main house for a 200 amp service. The code book does not explain this well. I have calculated a little less than 2% using 2 × 21.2 × 170A × 180' ÷300kcmil = 4.32Volts
Great explanation. Looking forward to the next video. I am putting in a critical loads panel with 3m of #4 wire and want to calculate the largest breaker I can use. I know I didn’t include the 80% rule the first time I calculated it but I also didn’t give my self the short distance benefit. Obviously you will be doing this in reverse but that’s easy to deal with.
Wow great video brings me back to school, how would you go about doing a calculation for a cable that isn’t in table d3 ex: I’m trying to do a service supply v drop calc with a one way distance 210 feet ? I’m using the CEC
Thank you for the great video. What would you do if dealing with 3 phase, 347/600 volt feeder cables? Also do you know any good CEC Voltage drop calculator? ( Excel, online,......) I would appreciate it.
Table D3 Note 6 offers some clarity for values not shown in Table D3 with the following "The distances and currents listed in Table D3 follow a pattern. When the current, for any conductor size, is increased by a factor of 10, the corresponding distance decreases by a factor of 10. This Relationship can be used when no value is shown in the table. In that case look at a current 10 times larger. The distance to center of distribution is 10 times larger than the listed value. Hope that helps.
@@dinyarderakhshan8275 it helps a bit, still slowly trying to wrap my head around it. I understand when its straight forward and on the table. Its when its not. for example if you had a 1000 foot run. 400 amp service. How would you calculate the voltage drop.
Could someone kindly explain how to do the voltage drop calculation for this scenario by CE Code Book: 4wire (3C +1N) 750 Kcmil RW90 and 500' length with 600/347 and 400 Amps?
How come you use the 90 degree column instead of 75 degree? Any real life application you would need to derate the conductor to 75 if it is being terminated on a breaker usually rated at 75.
Help I'm wondering if someone can help me with the calculation I'm not an electrician but I need help determining if I have the right size wire or what size wire I should actually be using I'm trying to run 200 amps to my shop I have a starting circuit breaker rated for 200 amps from my main panel the distance is about 650 ft I have been okayed to use direct burial aluminum wire. If I use 4/0 4/0 4/0 2/0 direct burial aluminum wire what is the most amperage I could expect out of it for that distance and what would be the correct wire to use to get the 200 full amps at that distance looking for someone that knows because I really keep getting mixed answers on this also I believe my voltage is 245 to 250 volts at the supply panel I definitely plan on running 208 220 volt type equipment in the shop such as air compressor welder and possibly a split AC
Thanks for breaking it down like that. You’re explanation and delivery finally cleared up the puzzle of volt drop. I like the way you do it in bite size chunks instead of a big long formula all at once.
sir, your explanation is what junior electrical students needed, you're making this whole learning soo simple, awesome teaching!!!!!
I enjoyed the video really clarified the calculations. The question I am left with is in Manitoba Breaker panels don't have a 90C breaker rating only 75C therefore even if we have 90C cable we are forced to use the 75C column for wire ampacity so what impact does that have on distance correction factor if the 90c cable rating is not allowed to be used because it is supplied by a breaker only rated for 75C?
Man these videos are incredible. Helping a ton in my 4th year. Thanks again Chad.
Thank you for acquainted us with voltage drop calculation from CEC. Can you please make a video on how to calculate the number of conductors/wires that can be pulled in 1 conduit?
Great video. I actually have a hot tub @ 125 feet that I needed this for. Very helpful
Perhaps it is American code.Drop in volts is IR Cos¢ + IX Sin¢.Hope, this has been taken care of.Very nice presentation.
Great video, did you ever make that second video?
Could you please do an example to calculate wire size ?
Excellent video , can you do a video showing voltage drop for larger wire over 4/0 . I am running acwu 300, 55 meters with a calculated load of 170amps from a power shed to main house for a 200 amp service. The code book does not explain this well. I have calculated a little less than 2% using 2 × 21.2 × 170A × 180' ÷300kcmil = 4.32Volts
Great explanation. Looking forward to the next video. I am putting in a critical loads panel with 3m of #4 wire and want to calculate the largest breaker I can use. I know I didn’t include the 80% rule the first time I calculated it but I also didn’t give my self the short distance benefit. Obviously you will be doing this in reverse but that’s easy to deal with.
Yup, you should be able to work it backwards. 3m isn’t that far a distance so you may just need to use 80% of the wire’s ampacity.
Thank you so much for the clear explanation, better than the college!
Where is the video describing what size conductor to use with these equations?
Wow great video brings me back to school, how would you go about doing a calculation for a cable that isn’t in table d3 ex: I’m trying to do a service supply v drop calc with a one way distance 210 feet ? I’m using the CEC
Thank you for the great video. What would you do if dealing with 3 phase, 347/600 volt feeder cables? Also do you know any good CEC Voltage drop calculator? ( Excel, online,......) I would appreciate it.
Would you not use rule 4-006 2) a) if there is no termination temperature given? which would give you an ampacity of 70A under the 60 degree column.
Also you would use the 75 degree column if it is being terminated on breaker in question 2 making it 48/65. am I wrong??
my thoughts exactly. unknown temp rating at the equipment therefore we'd use the 60degree column . so 50/70. Not 50/95. Correct?
This was explained very well, thanks making this video!
Where is the next video on how to determine the cable size
Exactly what I needed. Thank you.
do you have a video to find wire size
Thank you very much for a detailed explanation of everything
hey! great video, do you have on larger cables. I would love to see an explanation on anything over 320 amps. As that is as high as D3 goes
Table D3 Note 6 offers some clarity for values not shown in Table D3 with the following "The distances and currents listed in Table D3 follow a pattern. When the current, for any conductor size, is increased by a factor of 10, the corresponding distance decreases by a factor of 10. This Relationship can be used when no value is shown in the table. In that case look at a current 10 times larger. The distance to center of distribution is 10 times larger than the listed value.
Hope that helps.
@@dinyarderakhshan8275 it helps a bit, still slowly trying to wrap my head around it. I understand when its straight forward and on the table. Its when its not. for example if you had a 1000 foot run. 400 amp service. How would you calculate the voltage drop.
ENORMOUS KOK WHIPPES OUT DURING A SOCIAL STUDIES PRESENTATION IN MIDDLE SCHOOL
Would anyone be able to recommend a video for 3-phase systems and CEC (Canadian Electrical Code) , please?
Thanks a ton Chad. This video helped me understand the concept.
Great videos, Chad. Thanks for making them.
i cant find the follow up to this video, is it still on here?
Could someone kindly explain how to do the voltage drop calculation for this scenario by CE Code Book: 4wire (3C +1N) 750 Kcmil RW90 and 500' length with 600/347 and 400 Amps?
How come you use the 90 degree column instead of 75 degree? Any real life application you would need to derate the conductor to 75 if it is being terminated on a breaker usually rated at 75.
I was thinking the same thing.
chart uses insulation be careful in rules on wether the rules state 75 degrees TEMP or INsulation temp
Very nice... Thank u
Help I'm wondering if someone can help me with the calculation I'm not an electrician but I need help determining if I have the right size wire or what size wire I should actually be using I'm trying to run 200 amps to my shop I have a starting circuit breaker rated for 200 amps from my main panel the distance is about 650 ft I have been okayed to use direct burial aluminum wire. If I use 4/0 4/0 4/0 2/0 direct burial aluminum wire what is the most amperage I could expect out of it for that distance and what would be the correct wire to use to get the 200 full amps at that distance looking for someone that knows because I really keep getting mixed answers on this also I believe my voltage is 245 to 250 volts at the supply panel I definitely plan on running 208 220 volt type equipment in the shop such as air compressor welder and possibly a split AC
Great! Thank so much! Really simple 👌
What about voltage drop from a receptacle or circuit breaker 14awg
voltage drop is on line not your devices its calculated in
The wires from the circuit breaker to receptacle is called a branch circuit so you should NOT have more than 3% voltage drop in a branch circuit.
What if we have 75 degrees termination and wire is 90 degrees
You have to go with 75 degrees
80% rule for the breaker if load is inductive (reactive) power?
I think it is 80% regardless of the load. Unless a breaker is rated for 100% continuous operation we can only load them to 80%
NEC 210.19 (A) Informational note- this is the only spot in the NEC that mentions Voltage drop
215.5 (A)1(b)
But that’s just a one-way distance, don’t we need to multiply by 2 at some point?
NEC CHAPTER 9 TABLE 8
Hindi mein translation sir
I will try to find a way to do that Pravin.