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Electrical Question from Josh about Buffers That Trip Circuit Breakers


By Dave Rongey - Summary:

Question: I have a 120 volt buffer that draws 12 amps and is rated at 1500 rpm and is dc rectified.

Electrical Question from Josh about Buffers That Trip Circuit Breakers

Received from Josh in LA

Question: I have a 120 volt buffer that draws 12 amps and is rated at 1500 rpm and is dc rectified.The brand of it is a Mercury Floor machine burnisher. All of my service receptacles are 20 amp single receptacles (not a duplex) and are on their own 20 amp breaker. My workers still trip the breaker every now and then. Is there any device I could install on the buffers to regulate the amperage that is drawn.

Dave’s Reply:
Thanks for your electrical question.
Hey Josh – I am totally familiar with this scenario. The first thing that comes to mind is installing a speed control switch on the buffers that is rated over the 12 amps that the motors draw. The problem is the initial starting amperage surge. Another possibility would be a Soft-Start device. This is such a common problem with buffers used that I am surprised that the manufacturers do not build in a soft start circuit.

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