I am getting ready to run wiring for a sub-panel for my basement and then the wiring for the basement itself. I have a couple questions before I do, though: 1) How many amps can I run through a 75ft run of 6/3 wire? I've seen things saying anywhere between 50-60 Amps, but nothing definitive. 2) I'm planning on 2 dedicated 20 Amp circuits for my HT equipment. I can run standard equipment on a 20 Amp circuit, correct?