plug:
NEMA 6-20P
And an available 250V "3-pole 3-wire" dryer receptacle:
NEMA 10-30R
Based on NEMA charts given at:
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If I create an adaptor (6-20R 10-20P), my question is:
Q: Will bad things happen when I plug the compressor into the dryer
receptacle?
I guess I'm really asking whether the "ground" wire is equivalent to
the "neutral" wire (for the purpose of turning a motor)?
I realize the household ground wire connects to my cold-water pipe;
and I think the neutral wire essentially goes to ground at the
telephone pole a few houses away ... so ... doesn't that make them
essentially the same for my purpose?
I think the ground wire normally does not carry current while the
neutral wire _might_ carry current if the load is not balanced (but in
a motor it should be balanced, right?).
It seems to me that this 6-20R 10-20P setup would work safely.
But, I ask first: Am I missing something very important?
If so: What?