I have been milling all morning, and with no more devices turned on, the GFCI pops. Any ideas? When I reset it and start the mill up again. It pops. Even when it is not cutting, it pops. Any ideas.
UPDATE: My electrician friend noticed the motor was sparking, so I just need a new motor. The one rhat just died has a 2014 manufacture date.
Bad GFI outlet. They age and go bad. Check it with other devices and I'd bet it does the same thing.
ReplyDeleteNo. The outlet is less than a year (new house).
DeleteIs it really a GFCI, or is it an AFCI (Arc-fault protection)? With AFCI:
ReplyDelete• Early breakers weren't ready for real-world use, and are prone to nuisance-trips. New models for your entrance panel still aren't wonderful, but they're much better.
• Capacitor inrush on capacitor motors can cause trips.
• Sparking brushes on brush motors can cause trips.
With the latter two, sometimes plugging in the item-that-causes-trips through a "power conditioner" (surge protector with power-line filtering, such as is used for hi-fi systems) can smooth out the current-draw just enough to stay below trip threshold on the breaker. Cascading surge-strips (the ones advertising EMI, EMC, or RFI filtering) as a temporary measure to cascade the filtering . . .
I like Trip-lite 'Isobar' ones.
They do wear out. However, so do machines, and if there any place where hot current is grounding to the machine instead of returning via the Neutral wire, it will cause a GFCI to pop. There is a shock hazard somewhere in the machine.
ReplyDeleteGFCIs do go bad. I believe they are designed to pop if they are wearing out enough. Gettng a new one should solve the problem.
ReplyDeleteAre there any other outlets daisy-chained from that outlet (when it trips, do any other outlets lose power)?
ReplyDeleteAre any of those outlets outside?
Has it rained recently?
Does it pop when the mill is not plugged in? If not, you likely have insulation damage in the mill.
A GFCI trips when more than about 5mA flows from the hot to the ground. Yes, this is a less than lethal current by design.
All other garage outlets lose power. None are outside.
Delete