On Tue, 13 Sep 2005 22:14:23 +0000, JohnR66 wrote:

"Sherman" wrote in message
...

The compressor(Item No. 90385-4VGA) works fine when plugged into a
115v outlet, but not when connected with an extension cord. Even a
heavy duty cord causes the push-button circuit breaker to blow when it
trys to restart after the pressure falls and the unit tries to kick
in. When you push the button, the unit tries to start but kicks the
breaker after about 1 second. Sometimes it just whines without
turning over before it kicks the breaker. With an extension cord, you
can only restart it by bleeding off the back pressure.

There are two capacitors, a start capacitor and a run capacitor.


The documentation states that the compressor warranty is void if you
connect it to an extension card. And of course, if you run it without
oil.
info:
Heavy duty 2.5 HP rated motor
Air delivery: 5.6 SCFM @ 90 PSI; 7.2 SCFM @ 40 PSI
Oil lubricated pump
Thermal overload protection
Dual capacitors for fast, easy starts
Easy-to-read pressure regulator gauge
Clear view oil window for easier maintenance
High impact ABS shroud protects the motor
CSA certified
120V, 60Hz, 3400 RPM; Single stage pump, 120 PSI max; Air outlet:
1/4''-18NPT; Weight: 65 lbs.

You think a hard start kit would help?


Starting current is very high on these motors. Extension cords cause too
much voltage drop at start. It says not to use a ext. cord right in the
manual!

Also the 2.5 HP is BS. No 2.5HP motor plugs into a 15 or 20 amp 120 volt
outlet. The rating is bogus.

2.5HP is about 1850W, or about 15.5A, so it *is* possible on a 20A
circuit. ...though not likely. I have a 2KW bathroom heaters on
20A 120V circuits.

Though I agree, the starting current will be *MUCH* higher. Compressors
are like that.

--
Keith