@tga had some complaints about the idea of cutting pins, but I think it’s a pretty good solution. No, it would not “blow up” 120V appliances in an RV if the neutral pin were removed. It would obviously be an open circuit, so they would just not get any power.
Incorrect.
Remember that a split-phase 240V panel in the RV has two legs connected together like this:
L1---120V---N---120V---L2
When "N" is floating (due to an unconnected neutral) but 240V is provided between L1 and L2, the voltages found between L1-N and N-L2 will vary based upon their resistance, and will create an imbalance in the voltages.
It's not an open circuit because current will flow from L1, through powered appliances on the L1-N leg, then through powered appliances on the N-L2 leg, to return to the transformer.
I've seen an open neutral destroy appliances in all sorts of locations - homes, outdoor venues, RV's, etc. Usually, motors are the first things to blow up, since many/most electronics use wide-range switching power supplies, but occasionally you have voltages so far out of balance that it pops a few components.
EDIT: The video does a great job - I had suggested doing your own. But hey, YouTube is great.
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Oh and don't plug RV's into it. Controversy solved.
Be sure it's labeled six ways to Sunday. It's not necessarily the issue if someone steals it, but it's the issue if someone sees it and uses it (e.g., after you sell the Tesla it gets thrown in a box and years later, your son or daughter grabs it when his cousin brings the RV over). There's a reason we have all the different series of NEMA plugs, so that they're not subject to special knowledge of the implementation. Anyone who sees a NEMA 14 receptacle should be able to assume presence of a neutral.