Posted 11/24/2012 01:48 (#2713639 - in reply to #2712661) Subject: Re: 10-2 or 10-3 electrical wire
For 240 and 120 volt loads, you need three insulated conductors plus the bare or green ground. For a run of 65 feet with loads that might add up to 30 amps you need larger than 10 gauge, else the voltage drop will get to you, especially when you try to run your portable compressor, shop vac, or saw there. Been there proved that. My saws run much nicer with more torque and much faster starting with mostly #6 the length (60 feet) of my first shed than they did with #10.
Its a lot more bother to put it in, but I like to use metal conduit, that way mice, rats, and horses can't eat the wire insulation off and burn the place down.