Posted by IaGary on July 22, 2011 at 07:52:37 from (69.63.5.162):
I am putting in a new service to power my grain bins.
I have a new 200 amp disconnect breaker box that feeds two 60 amp sub panels that are fed with #2 alumium wire from the 200 amp main. Can I add a #8 copper to feed another sub panel and tie into the same lug that the alumium is under on the 200 amp main disconnect breaker?I have room, just wondewring about mixing copper with alumium. I do have a tube of the compound to put on the wires to reduce oxidizing.
Question 2. What size copper wire is required to ground this new 200 amp panel? I have two 5/8's diameter grounds rods in the ground as to the power company's request. I am guessing #8 or larger?
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