My 230 VAC question - The answer is:

From: Bryan Rupp (ruppster@alaskalife.net)
Date: Thu Jun 01 2000 - 00:41:44 PDT


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I took some time this evening to investigate how the motor was
wired and had to scratch my head for a few minutes. I would
have pulled the compressor apart in the first place before
bothering the list but my wife and I are in the middle of
moving to another unit at the moment as our current unit is
to be renovated next month and the boss has told me I'm not
allowed to play with my new toy till I get everything moved out
of the basement. Needless to say I'm in trouble, as usual, for
wasting this evening. :-) Anyhow, since I have gotten several
different answers curiosity got the best of me and I had to
figure out what I've got. I cleaned the data label on the
motor some more. It stated it was made for use with 115 or
230 single phase, not 230 two phase like I thought. When I
opened the control box I found four wires coming in from the
electrical cord. One each of black, red, white, and green.
Inside the box is a three pole contactor/circuit breaker used
to control the off/on when the air pressure in the tank is to
high or gets low. The black and red wires from the electrical
cord go to the first and second poles, L1 and L2, of the
contactor on the input side. The white wire goes to a seperate
terminal on the contactor. The green wire is grounded to the
metal of the control box. There are only two black wires
exiting the box going to the motor. They come from the L1 and
L2 output of the contactor. Now I just need to get base CE to
install a 230 single phase outlet in the garage of the base
housing unit we're moving in to. :-) At least I'm getting a
garage out of this move to play in. The unit we are leaving
doesn't have a garage and trying to work on a truck when it's
20 below is not all that fun when your fingers keep freezing
to the bolts.

Thanks for all the help,
Bryan
Elmendorf AFB, Alaska



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