Richard Ferguson wrote:

Thanks guys. The start cap on the side seems to be the easiest thing to
see, and this motor is just round, so it must be three phase, and I need
single phase.

The price is not so cheap that I can justify buying it and replacing the
motor and controls.

So what *is* the price, Richard? If you're going to pass on it you have no
vested interest in keeping it private anymore.

Grant

I think that I am just going to have to buy a new compressor, with a
220V single phase motor. Ingersoll Rand makes the SSL5L5, their low end
5 HP compressor, which I think would meet my needs, basically to run die
grinders at close to 100% duty cycle. It is rated at 18 ACFM at 40 psi.

Richard



Richard Ferguson wrote:

Someone is offering a Quincy compressor at a reasonable price, but he
is not sure if it is single phase or three phase. I need single phase.
The tag on the motor does not seem to help (he emailed me a close-up
photo). It is dual voltage, 208-230/460. The problem with the tag is
that it has a bunch of numbers, but they are not labeled as to what
the numbers are. :-(

Could I take an ohmmeter and figure it out? I would guess that a
three phase motor would have equal resistance on all three
combinations of the phases, while a single phase with neutral would
have different resistance, probably low between the two hot leads and
higher between hot and neutral. Green should be open relative to all
the other wires, no matter the phase count.

Is there another solution?

Richard