Quote:
Originally Posted by Shaun @ Tru6
Any idea why it did what it did? Should I at least get the 10/3 wire?
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Probably a little oxidation over time. Doesn't take much. Make them clean and shine. Maybe a little anti-ox paste.
I didn't sleep in a Holiday Inn, and I'm more familiar with Residential than Commercial, but in general the wire is sized for the load, then a breaker is sized to protect the wire, if that makes sense. #12 is generally rated for 20amp, #10 for 30amp (copper).
The specs for the compressor say 22 amp, 30amp breaker. If you have been getting by not tripping a 20 amp breaker, and it's a short run to the panel, you can probably leave well enough alone. If it's a 30 amp breaker on #12 wire, that's not allowed residential, and I suspect commercial also.
If it's a long run to the panel, you would also get less voltage drop with #10 wire.