Several reasons you might wish to think twice about using electric space heaters in MOST Rv's.. (mine has been modified)
They tend to use 14GA wire save for one or two circuits (Like the washer dryer) and this, is SUPPOSED to handle 15 amps. but each breaker feeds multiple outlets
The wire is "Lowest Bidder" and quite frankly I'm not sure it's up to spec. I've handled 12 and 14ga for many years and today's 14 feels more like 16 or 18.
Also copper is the #2 conductor of electricity (Silver is #1) but copper alloy is less expensive, and less conductive But measures the same on a wire gauge tool.
The outlets are usually "Quick Boxes" QBs use "punch down" connections this is where the wire is punched down into a "V" shaped slot that cuts through the insulation giving a very good low current,\ low contact area connection. But at double digit amp readings it is **** extra smelly. (As you noticed)
The wires in the Distribution panel are clamped in Now houses are normally close to the same temp year around, but RV's not so much.. As the wires and the clamps heat and cool the wire flattens and needs to be re-tightrened.. Unless someone like me tightens it that is (And darn few do it as tight as I do.. Trust me it's pre-flattened when I tighten it).
How I modified my RV.. IN my case this was easy as routing the wires was via pre-existing paths No holes ave the box mounting holes had to be cut.
I installed Two HEAVY DUTY wall outlets, these are standard house 15/20 amp outlets,m installed in a box,, Just like in a house, with 12GA wire wrapped aroudn a screw and TIGHTENED (See how I tighten) and one outlet only on the breakers that feed them. (Two outlets two breakers)
NO problems with hot wires. Not one, since I did that.
