[vincedeon]

jcmiller, I had to find my power cable between the panel and the outlet to interrupt it for an integrated inverter/transfer switch. First I pulled out the circuit panel far enough to see which way the feed-in cable went (down). Then in my basement area directly beneath the circuit breaker panel I pulled off the walls (4 screws easy peasy) and was able to locate it. The line dropped straight off the panel itself. From there it went to the rear of the trailer.

So this is more of a "how do I find the cable" rather than "where will the outlet go" but is part of figuring out the whole problem, and offered in that light.