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View Full Version : 12-2 w/grnd max amp



Jay Yoder
06-23-2008, 9:39 PM
I should know the answer to this, but wanted to verify...what is the max amperage brkr i can put on a 12ga-2 wire setup for 220v? I am figuring 20a just as if it were a 110v circuit. it is only about 25ft from the sub panel.

Jim Becker
06-23-2008, 9:48 PM
20a would be typical outside of some special applications or extreme distances.

Jay Yoder
06-23-2008, 10:19 PM
Thanks Jim,
that is what i was kinda figuring!

Chuck Saunders
06-24-2008, 8:51 AM
An important aside. Wire sizing is based on amperage without regard to voltage. ( I am limiting my comment to the low voltage applications ie <600V)