here is what I found:
The heavy blackened terminal is the neutral return.
So I planned to cut that end off and install a new one from Camping World
Cutting that cord is not easy.. I used this tool from sears and even with that it was hard going.
Here are a few photos of the wire prep, slit off the insulation (about 3.5inches)
Remove the fabric/nylong filler materials.
Trim the wires to length. I started with the white one and then trimmed the red and black ones and then lastly the green one. The color code is in the plug leaflet.
Surprise when I removed the stub of insulation on the white wire I found heavy corrosion...
compare that to the green wire.. nice and shiny copper...
at first I thought this was localized to the end of the wire, near the plug, so I cut off another foot of wire. no difference... in fact I found that the black and white wires were corroded.
I hypothesize that the black and white wires are the phase energized when running single phase and that this coach may not have its phase loads properly matched or maybe the previous owner didn't use the 20amp switch to put the load management into the low power mode.
So.. I'm resigned to install a new power cord, but for right now I need to rehab the cordset I have and get going...
So here is my last few wiring photos. I sealed the terminals with GE Silicone II clear product, this is a non acetic acid cure silicone.
tighten up all the screws.. and good luck...
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