Loooong wire run

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Old 07-08-20, 09:29 PM
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Loooong wire run

Hopefully I can get some clear answers. I'm going to be setting up a 120v 30Amp receptacle for an RV. The panel is about 400' away. My idea is to use 6awg copper off the panel for 1' butt into 3/0 awg alum direct bury for the long run, then back to 6 awg copper for 1' terminate to my receptacle to maintain 3% or less voltage drop.

Pro's or Con's? Or is this a bad idea? Thanks for any advice
 

Last edited by Terry Lape; 07-08-20 at 10:05 PM. Reason: Spelling

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07-09-20, 04:42 AM
pattenp
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2/0 aluminum will be fine. If the source panel is inside your home make sure you purchase aluminum wire that is approved to run inside the structure. Direct bury aluminum wire such as URD is only allowed outside as it's only rated as USE. You will need RHH/RHW/USE multiple rated direct bury to go inside.
 
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Old 07-08-20, 11:14 PM
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Welcome to the forums.

My calculator says 2/0 is needed so 3/0 is even better.
The #6 tails should be ok.
 
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Old 07-09-20, 04:42 AM
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2/0 aluminum will be fine. If the source panel is inside your home make sure you purchase aluminum wire that is approved to run inside the structure. Direct bury aluminum wire such as URD is only allowed outside as it's only rated as USE. You will need RHH/RHW/USE multiple rated direct bury to go inside.
 
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