100 amp wire gauge

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Old 11-16-07, 07:26 PM
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100 amp wire gauge

im running an exterior wire from my home to my garage undergound,the run will be about 65 feet.this wire will need to carry 100 amps,which gauge is recommended for this?thanks.
 
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Old 11-16-07, 10:10 PM
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At 65 feet you don't need to oversize for distance, so your hots and neutral should be run in #1 AWG copper. The ground wire is #8. Oversizing will only help if you plan to have very heavy loads running for extended periods of time, over time heavier wire will save a bit of power usage.
 
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Old 11-16-07, 10:25 PM
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Don't foget about grounding requirements at seperate structures.
 
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Old 11-16-07, 10:37 PM
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Just to be sure:
when you said "outside wire" did you mean to infer a direct buried cable? or simply that it was outside?

The #1 is the size if you are using UF. If you use other types of wire, the size may very well be different.
 
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