length of dc cable run

Author	Message
Warpspeed Guru Joined: 09/08/2007 Location: Australia Posts: 4406	Posted: 03:21am 14 Sep 2019       10mm sq is usually rated at 50 amps for normal domestic wiring. 20 Mtrs (there and back) of 10mm sq will have a total resistance of .0344 ohms. At 50 amps that will drop 1.72 volts. Cheers,  Tony.