Table 310.15(B)(6) Service conductors Dwelling

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Sierrasparky said:
Well thanks for the great info I tried to pass it along. I contacted the supply house and they are baffled. They told me that they carry #2 CU and that good for dwelling service, feeders ect. at 100 amps. I told the owner it won't work code does not allow it. He tells me they don't stock the SE stuff as we only stock Copper wire no Aluminum. I said you can get the stuff in copper too. He's going to continue with the same. I guess I am out of luck unless I want a big roll. That is what I get for wanting to use copper.


I had a some #2 AL SE cable out back so I used it.
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Your OP was asking about #4 now you mention #2. The ampacity of 2-3 CU NM is 95 amps so as long as the calculated load is 95 amps or less it can be used for the feeder and protected with a 100 amp breaker.

I don't know much about your area but I have worked in many parts of Northern CA and every supply house I have been to has stocked AL SE cable. Don't you have any other supplies houses in the area?
 
George Stolz said:
Now it all makes more sense. I was baffled that a supply house didn't have SER!

Copper SER is a rarity, at least around here. AL SER is the norm, and nothing to be ashamed of.
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My local supply house does not even have AL Se or Ser. No Aluminumm in that place.




curt swartz said:
Your OP was asking about #4 now you mention #2. The ampacity of 2-3 CU NM is 95 amps so as long as the calculated load is 95 amps or less it can be used for the feeder and protected with a 100 amp breaker.

I don't know much about your area but I have worked in many parts of Northern CA and every supply house I have been to has stocked AL SE cable. Don't you have any other supplies houses in the area?
Click to expand...

I asked about #2 CU and placing on a 100 amp breaker and got a negative response.
 
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