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
All,
I have added a ground link (10AWG) from the AC ground bus to the chassis.
But, before I made the connection, I wanted to test whether or not the 12VDC positive would close the circuit to chassis ground. My assumption was NO as I have not seen any AC grounds to the chassis.
(Note: this is a DIY toy hauler that I purchased and I inherited all the undocumented work.)
When I did the test with a simple 12VDC circuit tester, I showed a complete circuit (i.e. light came on). So, somewhere, one of the receptacles is grounded or one of the appliances is grounded to chassis. (I also assume that if a bare grounding were to touch the chassis, no issue).
I think I am safe now and I can continue with locating the mystery grounding points.
I have added a ground link (10AWG) from the AC ground bus to the chassis.
But, before I made the connection, I wanted to test whether or not the 12VDC positive would close the circuit to chassis ground. My assumption was NO as I have not seen any AC grounds to the chassis.
(Note: this is a DIY toy hauler that I purchased and I inherited all the undocumented work.)
When I did the test with a simple 12VDC circuit tester, I showed a complete circuit (i.e. light came on). So, somewhere, one of the receptacles is grounded or one of the appliances is grounded to chassis. (I also assume that if a bare grounding were to touch the chassis, no issue).
I think I am safe now and I can continue with locating the mystery grounding points.
