I had a similar problem when I first purchased my compressor, but I have a
dedicated breaker box in my garage and I wired another drop just for the
compressor with a 20 amp breaker, and do not run any type of extension cord.
It's cheaper to buy more air hose than extension cord of the right gauge. I
have 125 foot of air hose all using quick connects for reaching out and
using my compressor in the drive way or in any other part of my property.
Check your local building codes and mechanical regulations, you may be able
to do this work yourself and save the cost of an electrician Wiring should
be done with a minimum of 12n2 romex wire, with a preference to 10n2 to
carry the power load safely.
Larry Zink
Z Group Racing and Performance
Houston, Texas
----- Original Message -----
From: scott s. <75270_3703a@csi.com>
To: Triumph list <triumphs@autox.team.net>
Sent: Monday, February 22, 1999 7:15 PM
Subject: Re: Compressor problem
>
>On Mon, 22 Feb 1999 11:28:26 EST, Lftlesl@aol.com wrote:
>
>>
>>In a message dated 2/21/99 7:09:49 PM Central Standard Time,
>jack@cocoinc.com
>>writes:
>>
>><< It would reach atbout 50 psi
>> then go hmmmmmmmmmm then it would trip the fuse. I tried a few
>outlets all
>> the same. Being a beautiful day and determined to work on the car
>I rented
>> one from Home Depot only to find it would not run at all, tripping
>the fuse
>> as soon as it started. Is this common with 110 compressors?,
>what do most of
>> you use? 110? 220? gas? >>
>>Jack-
>>I've had the same breaker-tripping problem with my 5HP
>compressor (110 volts).
>>I minimize it by unplugging everything else on the circuit -- we can
>live
>>without the toaster, microwave, etc. for a few hours . Also make
>sure you plug
>>the compressor directly into the socket -- don't use an extension
>cord. With
>>these precautions, I can get through an afternoon using the
>compressor with
>>only a couple of trips to the breaker box.
>
>I'm kind of concerned about this. First off, your compressor should
>indicate how many amps it will draw. Household 110v circuits
>are either rated at 15 or 20 amps. (except maybe for some
>special circuits like dryer if not 220v?) Obviously it would be better
>to use a 20 amp circuit. Next, is the circuit protected by ground
>-fault detection? These circuits are pretty sensitive to poor
>grounding conditions.
>
>I don't know if the NEC has any limits on branch circuit runs
>for 20 amp circuits. I don't think an extension cord (if it is
>big enough in wire gauge) is going to cause your problem, but,
>while I don't have AC induction motor data handy, I imagine if
>there is a voltage drop, your motor will draw more current
>than the amount on the data plate. So you might put on a
>voltmeter and see what you are getting at the end of the cord.
>In commercial settings there limits on when you are allowed to
>use outlets. A commercial site would probably have to hardwire
>the compressor to a branch circuit.
>
>Another problem may be that the motor starter is just "across
>the line". When an AC motor starts, there is a tremendous
>current draw until it starts to get up to speed (probably around
>1800 rpm). I don't know if household circuit breakers are designed
>to trip on instantaneous current, of if there is some slight delay.
>
>scott s.
>
>
>
>scott s.
>.
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