Well, it's more insidious than that C... I looked at that chart when I was triaging the unit. I can only offer in my defense that I must have seen what I expected to see.
I have no doubt that I'm not the first poor sod that has happened to, either.
So now I'm going back to basics, and going to wire the thing correctly with a new cord. Then all that mess will be fixed proper; even if it is IEC colour-coded for you scone-eaters instead of North America, at least it will be colour-coded correctly.
First thing I did was cut the end off that defective cable, so it never gets used for anything except a source of raw wire.
mnem