Breaker for Air Compressor
#1
07-27-02, 07:52 AM
Breaker for Air Compressor
I was recently given an air compressor that is equipped with a 230 volt, 60Hz, 3450 RPM Century electric motor (Part # 8-150776-03).
What is the proper breaker that should be installed in my panel box to ensure this air compressor functions properly? I will only be coming out of the panel box about three feet before I put up a "Twist Lock" style recepticle in which to plug in the cord from the motor. The cord from the motor has a twist lock plug that says 20A, 250 volt on the plug. The motor cord is 10/3.
Thanks for your help.
What is the proper breaker that should be installed in my panel box to ensure this air compressor functions properly? I will only be coming out of the panel box about three feet before I put up a "Twist Lock" style recepticle in which to plug in the cord from the motor. The cord from the motor has a twist lock plug that says 20A, 250 volt on the plug. The motor cord is 10/3.
Thanks for your help.
#2
07-27-02, 10:01 AM
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On the motor nameplate, will be the FLA (full load amps) and horsepower. Tell us.
Sometimes it will say max fuse or breaker size. Tell us.
It's hard to determine load from the manufacturers cord, because they can sometime get away with undersizing it from what you need within you wiring system.
Sometimes it will say max fuse or breaker size. Tell us.
It's hard to determine load from the manufacturers cord, because they can sometime get away with undersizing it from what you need within you wiring system.
#3
07-27-02, 11:13 AM
HandyRon,
There is nothing on the manufacturers plate that says FLA, but on the plate it does state AMPs and that is 15.0. As far as horsepower, next to HP on the plate it says SPL.00. Next to output, it says 2.98Kw.
If you need any more from the plate, let me know.
There is nothing on the manufacturers plate that says FLA, but on the plate it does state AMPs and that is 15.0. As far as horsepower, next to HP on the plate it says SPL.00. Next to output, it says 2.98Kw.
If you need any more from the plate, let me know.
#5
07-27-02, 11:55 AM
a 12 wire and a 20 breaker should do well. I would have waited for Ron but this sounds like something a guy might want to do on a Sat afternoon. Does the motor state a HP rating? Just curious.
#7
07-28-02, 10:51 AM
sberry27,
It is a portable model, but I will be leaving it in one spot in the garage, however I do not want to hard wire it in just in case I want to move it around.
On the manufacturer's palte on the motor it says next to HP SPL.00.
It is a portable model, but I will be leaving it in one spot in the garage, however I do not want to hard wire it in just in case I want to move it around.
On the manufacturer's palte on the motor it says next to HP SPL.00.
#9
07-28-02, 05:34 PM
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I'll agree. For sure, the #12 is the correct selection for the cirucit considering 15 amp load (code requires ampacity of minimum 15 * 1.25). Try the 20A breaker. If it falsely trips, post back and we can advise of how to upsize the breaker without upsizing the wire for this dedicated motor load cirucit.
#10
07-29-02, 07:52 AM
because this is a motor Branch-Circuit , the rating of the conductor size and the rating of the ciruit-breaker are different calculations. The rating of the circuit-breaker must be adequate to carry the motor starting surge which could be 300% of the full-load/"running" current.
