"gloria" wrote in message
ups.com...
We put in a 60 amp breaker and 12/3 wire to run to the a/c. We
tested the wires, hot to white and hot to ground, and the test was
fine.

Did yo run 12/3 or did you run 12/3 with ground? When you say hot to white,
are you doing both the black and the red? Getting 120V on each?

When we ran hot to off the breaker to the others and got no juice
to it. Tester was barely dim. Could this be a faulty breaker?

Yes

We can
not get juice to the a/c at all. What could we do doing wrong? Should
the breaker be that high of amp? The outlet for the a/c says 20A. Is
this also important?

You should be using a 20A breaker (a double for 220V) for 12/3 wire.