We have a small gooseneck trailer and we are going to insulate and finish the inside just for sleeping on overnight trips, no shower, tanks, etc.  If we wanted to run a 120V light, or a fan, or small TV, could you plug into the campsite power with an appropriate cable, run it into the LQ through a cord box, attach a GFI power strip and then plug in small items?  We were thinking of this instead of running electrical wiring throughout the LQ, since we really are not going to have appliances, a/c, etc.  Just being lazy and saving some work.

Thanks for the input.

It should work well. There are some considerations you should address, that involve how long a cable you intend to use, and the total amount of load you will have with the various appliances.

If you were to add up all the electrical appliances that will be on at one time, and don't forget a future a/c or ceramic heater, you will have an idea of what the power requirements are your trailer will require.

You can purchase pre made shore lines  that are adaptable to different amperage outlets. Most owners have a 30 amp line and 20 amp adapters. It would be easier to install a heavy one now, rather than having to redo it later when you run out of capacity.

The longer the shore line, the heavier the gauge wire it will require. In your calculations, your total feed capabilities should be lessened to 80% for a continuously run circuit to reduce the heat effects.

BOL  Gard