TrailManor Owner's Forum - View Single Post

**ShrimpBurrito** · 08-06-2008, 08:07 PM

I think I'd use either 8 gauge aluminum or 10 gauge copper.

If you pull 30 amps through a 10 gauge aluminum cord 125 feet long, you're going to lose about 15 volts. If you use 8 gauge, you'll lose 9.5 volts, which will probably be adequate, depending on the voltage of your source. Copper has less resistance, but is much more expensive. If you use 10 gauge copper, you'll only lose 7.7 volts.

I've found this site to be a nifty source for these sorts of calculations:
http://www.powerstream.com/Wire_Size.htm

Dave

08-06-2008, 08:07 PM	#2
ShrimpBurrito Site Sponsor Join Date: Jul 2006 Location: Sunny Beaches of Los Angeles Posts: 3,242	I think I'd use either 8 gauge aluminum or 10 gauge copper. If you pull 30 amps through a 10 gauge aluminum cord 125 feet long, you're going to lose about 15 volts. If you use 8 gauge, you'll lose 9.5 volts, which will probably be adequate, depending on the voltage of your source. Copper has less resistance, but is much more expensive. If you use 10 gauge copper, you'll only lose 7.7 volts. I've found this site to be a nifty source for these sorts of calculations: http://www.powerstream.com/Wire_Size.htm Dave __________________ 2000 2720SL & 2007 3124KB 2005 Toyota Sequoia Twin Battle Born 12v 100Ah LiFePO4 (BBGC2) batteries, 300W solar on rear shell, Link 10, Lift kit, Maxxis 8008 225 75/R15 E tires