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Posted by stryped on August 24, 2009, 1:57 pm
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I am wiring my garage and am putting an outlet in for a "futre" air
compressor to replace my small 110 unit. I bought 10/3 wire and plan
to use a dedicated circuuit breaker. I also bought a flush mount 4
prong recepticle.
Can I use this for an air compressor?
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Posted by Jim Stewart on August 24, 2009, 2:15 pm
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stryped wrote:
> I am wiring my garage and am putting an outlet in for a "futre" air
> compressor to replace my small 110 unit. I bought 10/3 wire and plan
> to use a dedicated circuuit breaker. I also bought a flush mount 4
> prong recepticle.
>
> Can I use this for an air compressor?
Overkill. Most 220 volt single phase compressors
work just fine on a 20 ampere circuit and they
only need 2 12 gauge wires and ground. The cheapest
standard plug and outlet is the one that looks like
a normal 110 volt grounded outlet with one of the
blades turned 90 degrees. See 6-20R and 6-20P on this
chart: Be sure to wrap some red tape around the white
wire on both ends to indicate that it's hot.
http://www.jkem.com/pictures/NEMA%20Non-Locking%20Plugs.gif
Available at any decent hardware store.
Or better yet, hire an electrician. You still
scare me.
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Posted by on August 24, 2009, 7:41 pm
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wrote:
>stryped wrote:
>> I am wiring my garage and am putting an outlet in for a "futre" air
>> compressor to replace my small 110 unit. I bought 10/3 wire and plan
>> to use a dedicated circuuit breaker. I also bought a flush mount 4
>> prong recepticle.
>>
>> Can I use this for an air compressor?
>
>Overkill. Most 220 volt single phase compressors
>work just fine on a 20 ampere circuit and they
>only need 2 12 gauge wires and ground. The cheapest
>standard plug and outlet is the one that looks like
>a normal 110 volt grounded outlet with one of the
>blades turned 90 degrees. See 6-20R and 6-20P on this
>chart: Be sure to wrap some red tape around the white
>wire on both ends to indicate that it's hot.
>
>http://www.jkem.com/pictures/NEMA%20Non-Locking%20Plugs.gif
>
>Available at any decent hardware store.
>
>Or better yet, hire an electrician. You still
>scare me.
Never go wrong pulling 3 wire, and #10 will handle a REAL compressor.n
a REAL 10HP
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Posted by Lloyd E. Sponenburgh on August 24, 2009, 2:17 pm
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4793-a2e5-4aafa813ea03@a26g2000yqn.googlegroups.com:
> I bought 10/3 wire and plan
> to use a dedicated circuuit breaker. I also bought a flush mount 4
> prong recepticle.
>
> Can I use this for an air compressor?
>
You didn't say what sort of recepticle, so I'll assume you got one
similar to a dryer outlet. It'll work, but you'd be better off with #
8 wire, 3-conductor plus ground.
A high-inrush 5HP compressor might draw 50 amps on start. Although #
10 will carry it without excessive heating, you'll get less voltage
drop - even on a 30-50' run - with #8.
No biggie, though. I'm guessing you won't be going for a commercial
grade and size of compressor, anyway.
LLoyd
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Posted by Ignoramus18810 on August 24, 2009, 3:22 pm
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On 2009-08-24, Lloyd E. Sponenburgh <lloydspinsidemindspring.com> wrote:
> A high-inrush 5HP compressor might draw 50 amps on start. Although #
> 10 will carry it without excessive heating, you'll get less voltage
> drop - even on a 30-50' run - with #8.
>
> No biggie, though. I'm guessing you won't be going for a commercial
> grade and size of compressor, anyway.
I would suggest putting as big wire as you can afford. It amounts to
just a few bucks, but lets you upgrade your equipment at will.
i
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> compressor to replace my small 110 unit. I bought 10/3 wire and plan
> to use a dedicated circuuit breaker. I also bought a flush mount 4
> prong recepticle.
>
> Can I use this for an air compressor?