Adding a sub panel


Old 02-06-18, 10:41 AM
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Adding a sub panel

I am working on a remodel and have to add a 100amp sub panel to the garage, it is a 165ft run from the main panel. I will be adding 2 in ground junction boxes because the run will exceed 360į in bends. I'm thinking of running 3 2/0 aluminium and #6 ground. Let me know what ur thoughts are on this
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Old 02-06-18, 12:12 PM
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The ground needs to increase to #4 aluminum or #6 copper, but other than that the plan sounds OK. Burial depth for the conduit needs to be 18" to the top of the pipe.

Why so many bends?
Old 02-06-18, 05:29 PM
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2/0 Al is a bit big for 100A. 1/0 is plenty and even #1 would be enough at 165ft providing you are not loading it to the max of 100A all the time.
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