From: David Cole (DavidCole@tk7.net)
Date: Tue Oct 21 2003 - 18:54:39 PDT
That's not quite right. If the motor was 100% efficient, 746 would be the
correct multiplier. But small motors are not very efficient. Plus there is
something else called power factor that causes the motor to draw more
current. So multiplying by 1100 and dividing by 240 is a lot closer.
Dave
>>>>>>>>>>>>>>
On Mon, 20 Oct 2003 21:03:19 -0700, Paul A. Thomas
<bluewhale@jaxkneppers.com> wrote:
> Thanks Arthur, that's what I was searching for
>
> Paul
>
> ***************************************
>
> At 11:34 PM 10/20/2003 -0400, you wrote:
>> To find the wattage requirements for an electric motor, multiply the
>> horsepower rating by 746. Then divide the answer by 120 (or 240) to find
>> amperage draw. Remember that an electric motor will draw up to several
>> times its running current, when starting.
>>
>> apb
>>
>> ----- Original Message -----
>> From: "Paul A. Thomas" <bluewhale@jaxkneppers.com>
>> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>> Sent: Monday, October 20, 2003 9:59 PM
>> Subject: Re: [MV] Wiring for Air Compressor
>>
>>
>> > > It'll just need lots of amps.
>> >
>> > None of the spec sheets I've seen have the Amps required listed. Nor
>> > Watts... only Volts. My fuzzy recollection of working with electricity
>> says
>> > I need more than that to compute the amps required, both running and
>> start
>> > up.. Does that sound right? Or is there a way to pull the required amp
>> info
>> > from something like this
>> >
>> >
>> http://www.sears.com/sr/javasr/product.do?BV_UseBVCookie=Yes&vertical=TOOL&pid=00919260000&tab=specs#tablink
>> >
>> > I can't afford to replace my electrical service, so am looking to do
>> as
>> > well as I can with what I now have. And am happy to avoid doing
>> laundry
>> if
>> > it will help the compressor run. <g>
>> >
>> >
>> > Thanks guys
>> >
>> > Paul
>> >
>> >
>> > ===Mil-Veh is a member-supported mailing list===
>> > To unsubscribe, send e-mail to: <mil-veh-off@mil-veh.org>
>> > To switch to the DIGEST mode, send e-mail to <mil-veh-digest@mil-
>> veh.org>
>> > To reach a human, contact <ack@mil-veh.org>
>
>
> ===Mil-Veh is a member-supported mailing list===
> To unsubscribe, send e-mail to: <mil-veh-off@mil-veh.org>
> To switch to the DIGEST mode, send e-mail to <mil-veh-digest@mil-veh.org>
> To reach a human, contact <ack@mil-veh.org>
>
-- Dave
This archive was generated by hypermail 2.1.4 : Sat May 07 2005 - 20:25:03 PDT