12V wiring Aluminum Cargo Trailer conversion
Been searching for days and haven't found a clear answer on whether or not a 12V system should be grounded to the chassis of a 100% aluminum framed enclosed trailer. Am I better running negative wires...
Forum Discussion
WNYBob wrote:
I think you have missed the point that there are 2 separate 12v systems in a TT. One is the TV (tow vehicle and the DMV lighting) circuit and the other is the TT. They should not be mixed.
Both ought to be bonded to the trailer frame, though, regardless of whether that forms the negative return for current or not. For the house electric system, if there is a converter included, I think this is a requirement of the NEC. (Similarly, the 120V ground needs to be bonded to the chassis.)
