Is an RV generator worth it?
My RV has an Onan Microlite 4000 generator that has been well maintained. It now starts but stops running as soon as I release the Start button. My mechanic identifies the problem as electrical and ...
Forum Discussion
DrewE wrote:
8 AWG wire is 0.63 ohms per 1000 feet, not per foot! Similarly for 1 AWG wire.
Particularly for low voltage circuits (or long wire runs) power loss due to wire resistance can be a constraint on wire size. Regardless of the wire run length, ampacity is a consideration. The standards used for current carrying capacity vary a fair bit, though; often automotive and similar low voltage systems are not as conservative as, say, the NEC requires for normal AC wiring.
Thanks for the correction should have caught that. Doesn't change the premise, length matters, 10 feet of 8 awg will drop 12v 4% at 70 amps, that's 30 watts heating your wire plus half a volt less at the battery. I probably have about 20 feet total length from alternator to batteries the way its routed through chassis.
