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Old 07-31-2008, 03:45 AM   #1
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wire size for sub panel

What size and type of wire would be suitable for powering a 100 amp sub panel from a 200 amp main panel? Distance will be approx 40 ft with feed running through an attic. Location, Cleveland, OH.


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Old 07-31-2008, 07:26 AM   #2
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wire size for sub panel

Do you need all the 100 amps in the sub? You could feed it with # 6 and use a 60 amp breaker in the main.

#2 al is what I use, and put it on a 90 amp breaker.


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