Air Compressor


Tobykanobe

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When shopping for motors, check for a listed rating of "compressor duty" or "S3".  Motors of a given HP are not all the same. Core and winding construction is different to meet various operationg conditions. This site explains those conditions a bit. S3 rating seems most closely matched to the typical loading cycle experienced by an air compressor.

And you said the compressor needs 3HP, which means you will probably need a 240 volt circuit to feed it.

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