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AssuredElectrical
AssuredElectrical, Master Electrician
Category: Electrical
Satisfied Customers: 4241
Experience:  Contractor-42+ Years in the ElectricalTrade
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100 amp service, Power source 200' away, What size wire and

Customer Question

100 amp service, Power source 200' away, What size wire and ground wire?
In Copper(THHN) and Aluminum.
NEXT :
60 amp service box (Same As above)
I know about the ground rods.
Submitted: 1 year ago.
Category: Electrical
Expert:  AssuredElectrical replied 1 year ago.

Welcome. My name is ***** ***** would be glad to assist.

Both the 100 amp and 60 amp is below. If this is an actual service for a home, the minimum allowed is 100 amps, code does not allow 60 amps on a home service any longer.

If just a sub panel for another location from the main, then you can use either 100 or 60 amps.

100 amp at 200 ft, to keep voltage drop at 3% or less as code suggests:

1. 3- #2 copper for the phases and neutral, then a #6 for the ground

2. 3- 1/0 aluminum for the phases and neutral, then a #4 for the ground

60 amps at 200 ft

1. 3- #4 copper for the phases and neutral, then a #8 for the ground

2. 3- #2 aluminum for the phases and neutral, then a #6 for the ground

Thanks

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