Reply by Ted78

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Posted on 36-600 DELTA 10" TABLE SAW

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407 posts in 2602 days

#1 posted 07-09-2017 12:45 AM

Before you replace the gfci outlet do check the ground and make sure the outlet is not just doing it’s job.
As to why it trips the gfci instead of the circuit breaker,the two are measuring entirely different things. The circuit breaker measures how much current is being drawn and if it goes over that amount the circuit trips, as opposed to the wires going to or in the tool heating up and causing a fire. GFCI or Ground fault circuit interrupters. don’t measure the current the current the appliance is using, but instead monitor the current from the ‘hot’ side of the outlet equals the current entering the ‘neutral’ side of the outlet. Nothing to do with the third grounding prong by the way. If they don’t match electricity is going somewhere it shouldn’t, like maybe through you, or maybe just through the third prong grounding plug, either way it shouldn’t be. The circuit breaker keeps your house from burning down, the later keeps you from getting electrocuted.

-- Ted

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