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Eagle[/quote]
Well! You need a male plug at the TD that the extinction cords female end will plug into. The black wire is hot, the white wire is the return and the green wire is ground. The black wire always goes to the brass screws on any switches, light fixtures, breaker or outlets. The white wire always goes to the chrome screw on outlets and light fixtures. All the white wires are connected together. That’s from shore power and to all the outlets/light fixtures.
The black hot wire from the shore power goes to the main breaker. Use a GFI breaker for the main, as you do not know if the shore power will have a defect ground until it’s to late and some one gets a shock. From the other side of the main breaker that goes to the sub-breakers, like one for the A/C, one for the sleeping quarters, one for the galley and one for the heater EXC.. As to the size of the breakers you need to look at how much amperage each device uses.
The most important is the grounds. The shore power grounds wire needs to go the GFI breakers source ground side and all the grounds from your loads need to go the load side. Do not ground the trailers frame to the AC powers ground. You need to keep the 12v dc grounds separate from the AC grounds.
If you connect the frame to the AC ground and the shore power has a defective ground and you touch the hitch you may become the current carrying device for the whole campground back to earth ground. That is not lighting up ones life. More like ending life. You can run a hot (black) wire to moor that one outlet or to an outlet and a lamp just watch how much total current the devices will draw if they are all turned on. Also remember the main breaker and max shore power has to mach. If shore power is 15 amps, your main breaker is 20 amps, the shore power should trip long before your main will. But you may take out half the campground too. You may become an unwanted gust fast.
Chuck