I've install some AC wiring and plenty of DC wiring in the past, but never together in a system as large as this one. Although everything in my trailer is now wired up and functioning I want to double check some things as a safe guard.
1. I am using the original breaker AC box as a junction box of sorts. The shore power cord is connected to it (back of trailer under dinette bench). Inside of it I hooked some heavy gauge AC line to that which then runs to the converter (front of the trailer). The repurposed original breaker box is grounded to the frame. I would think that would suffice, right?
As a side note- and this may not be "up to code", I also use the original AC breaker box as a junction for 2 AC outlets--- which are branched off the PD 4045 converter. These outlets are not connected to the shore power cord within the box, besides perhaps the ground. Even If this is not up to code-- is it a bad idea?
2. So it sounds like the AC earth-ground and DC negative can both be connected to the frame with no ill effects- aside from possible corrosion issues. Correct?
3. I was under the impression that the standard way to wire the DC circuits in the trailer was to run both NEG and POS leads to each destination (outlet, light
,fan, fridge). On the power source side the POS lead goes to the black number coded wires from the converter. Each of these has corresponding fuse. The NEG lead at the power source can all be run to a common bus bar, which is then connected to the frame at a single point-- if not the frame where else would I connect this common NEG bus bar?