Is it brand new, or been around a while? Might be the
berrings are dry, and it's under a bit of a load, trying to
spin. Give it a couple drops of ND-30 oil in the berrings,
and see if that works better.
Someone else also mentioned using clamp on ammeter. That
might give different number.
The strait answer, is that it's a path from Alaska to
It could also be plain, needle, or sleeve. (Sounds like the
start of a joke. A man has a plain, needle and sleeve. His
boss asks him to make a berring...)
Are you misreading 18 as 13?
The table in the NEC gives 16 amps for an "average" 1 HP 120V motor.
That, along with the nameplate value of 13A is for a fully loaded motor.
Are you operating with a mechanical load?
Watts might also be of interest. A 1 1/8 HP mechanical load is 840
watts. Then there are losses that add. I never looked at the watts of an
unloaded motor. Should be far less - most of the current is reactive.
You've not ever said what the motor is doing. A typical squirrel
cage blower and its motor will run way over rated amps and burn
the motor up. The normal process is to get it running and
restrict the intake air until the amp draw is within spec. The
blower wheels are normally in a housing that does this, the issue
comes up if you try to run the blower out of its normal housing.
Keep the whole world singing . . . .
I didn't see the 15A limit on my Kilowatt. I put it on my compressor
motor and it started at about 16 amps when I turned it on, and went up
to 19 amps just before shutting off when it reached full pressure,
about 120psi. The Kilowatt seems ok for having been overloaded.
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