What gauge wire?
I want to do it right and am not afraid to dig in (do the work and spend the money). I've got a Progressive Dynamics PD 4645 converter (which I put in to replace a boiler type). The length of ca...
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Since you have #8 already there, unless it is easy to run new wire, I'd hook it up with #8 and give it a try. If your satisfied, your done, if not, then run a new wire, but then #6 or #4 welding cable is very readily available and easy to work with, pick one and go with it.
Whatever you do, go with high quality terminals properly installed.
More than likely, the hot run is your 12ft, but the ground is likely grounded to the trailer frame at the battery and at the converter. This is in the vast majority of cases, a much lower resistance path than a #6 or #8 wire. I did some measurements on my trailer frame ground and it is better than #4/0 AWG cable. Results will vary depending on frame construction and welding, but usually frame ground is better than a length of wire.
Whatever you do, go with high quality terminals properly installed.
More than likely, the hot run is your 12ft, but the ground is likely grounded to the trailer frame at the battery and at the converter. This is in the vast majority of cases, a much lower resistance path than a #6 or #8 wire. I did some measurements on my trailer frame ground and it is better than #4/0 AWG cable. Results will vary depending on frame construction and welding, but usually frame ground is better than a length of wire.
