Well I checked in the 96 issue of the NEC and if it is actually a DC motor
which is easiest to do speed control a 2 hp motor is listed as pulling 17 amps,
a single phase 2 hp is listed at 24 amps, and a squirrel cage, wound roter,
which I doubt it is is rated at 13.8 amps. With sine wave chopping controllers
for speed as most of the newer things are it is no telling what a tru RMS value
may be. Of course the listed values I was giving was at full load. What would
be full load for a treadmill. Somewhere there should be info in the literature
or on a name plate giving a wattage or amperage for the entire unit, which in
your case is what is important.. Two and one fourth horse power is a non
standard horsepower, which I have saw similar on imported equipment. Probably
because it is designed for 50 cycle the horsepower rating changes for our 60
cycle.
Ron
----- Original Message -----
From: David Ferrin
To: [email protected]
Sent: Monday, October 05, 2009 6:12 PM
Subject: [BlindHandyMan] electric motor question
We just got a new treadmill that has a 2.25 horse power motor in it. I
don't recall the formula for calculating the electrical current usage but I
know that there are several on here who do know it off the top. It is on a
fairly lightly used circuit but that of course depends on the time of day as
outside lights ETC are also on that line. I can change things around here and
need to know if I should or not.
David Ferrin
www.jaws-users.com
VIP Conduit Tech Support
www.vipconduit.com
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