Posted by MarkB_MI on October 09, 2023 at 03:23:58 from (174.236.34.40):
In Reply to: Re: Outbuilding wire posted by olddavid on October 08, 2023 at 14:56:54:
> Interesting you are saying 4 conductors. I'm guessing that's a code requirement. 27 years ago when I ran an entry cable to my mobile home the instructions said 4 wire as well but I couldn't find it. I finally went to one supplier who after I told him the situation said I'm going to give what you need. It was 3 wire. 2 hots and a neutral. It was UF wire and I buried it directly in the ground. #2(?) aluminum cable I believe. I tied the neutral bus and the ground bus together inside the house panel just like I see in regular houses and factory panels that have no separate ground bus and grounded the neutral/ground bus with an 8' copper rod underneath the house. I've had no problems. If I had found 4 wire they would have been connected together in the 100 amp disconnect breaker box at the pole anyway. Not code?
Current code is to run separate ground and neutral from the main disconnect to an outbuilding. The ground conductor needs to be grounded at the outbuilding as well. The old code allowed only three conductors at the oubuilding, but still required a separate ground rod at the outbuilding and required ground and neutral to be kept separate at the outbuilding.
As for mobile homes, I'm pretty sure the code has required four conductors for more than 27 years.
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