You're right about the 220V causing a change in parameters.Note that I said
115V @ 15A which is the "normal" circuit where I live.

My main point there was that the so called HP ratings on most retail
machines have weasle phrases like "peak". It allows the mrketing types to
claim higher nubers and essentially lie to the consumer without legally
lying. If you want to get a true feeling for the size of the motor look at
the voltage and the amperage, from that you can get a true estimate of the
realpower th motor can deliver.

Your point about the duty cycle of the compressor is good too. Many of the
smaller compressors can only be on for part of an hour before they have to
cool down. It depends a lot on how hot the incoming air is and how much
ventilation the compressor has. Many people try to put the compressor
somewhere where it will be "quieter". Unfortunately this tends to mean very
bad air circulation, hence more overheating problems. Good air circulation
can really help the compressor stay cool.

Regards


"william_b_noble" wrote in message
news:1105213477.cdc6992f339eee8061e10bc08b86b122@t eranews...
Frank's comments are dead on - when buying a compressor, look at flow and
PSI, ignore horsepower. He is not right about the 1.25 horsepower IF you
allow 220V as well.
Snip