hhsting
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1/12HP recirculation water pump is 120V single phase has 20A breaker. What code section says it needs 20A? Should it not be 15A?
Recirculation pump
- Thread starter hhsting
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DrSparks
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hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
No just hp voltage
DrSparks
The Everlasting Know-it-all!
- Location
- Madison, WI, USA
- Occupation
- Master Electrician and General Contractor
Well, I know Grundfos pumps have internal overload protection, so I don't see circuit size mattering. 15 amps is more than enough for HP rating. It's like a box fan motor. It's tiny.
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Allow me to clarify my answer. I have seen these small motors on general purpose branch circuits so often that I didn't review the Code well enough. Thankfully a more knowledgeable moderator noted my reply.
After review I believe IF the only load was the 1/2 HP motor, the circuit should not be larger than 15 amp per 430.52.
If there is addinal load on the circuit then a 15 or 20 amp circuit would be allowed per 430.53
After review I believe IF the only load was the 1/2 HP motor, the circuit should not be larger than 15 amp per 430.52.
If there is addinal load on the circuit then a 15 or 20 amp circuit would be allowed per 430.53
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