donf
Oct 3, 2007, 02:42 PM
Earlier you recommended a 2 cooper or 1 alum. Cable for a 150 ft. run to a pole barn.
From previous posts you suggested a 4/2 cable from post lugs out to the sub panel.
What I do not understand is the following:
If you need to determine what size cable you first define the needed amperage +10%.
So if the actual draw on the line is 110 Amps, how do calculate an 80% usage?
From previous posts you suggested a 4/2 cable from post lugs out to the sub panel.
What I do not understand is the following:
If you need to determine what size cable you first define the needed amperage +10%.
So if the actual draw on the line is 110 Amps, how do calculate an 80% usage?