Double water coolers with bottle feeder keep randomly tripping GFI. I replaced GFI and still will trip randomly. Only one compressor for both drinking

[CrazyCarl123]

I have two water coolers with one bottle feeder. Only one compressor total. They randomly trip the GFI. This is not on a dedicated circuits before the drinking fountains ( other thing are hooked up). I replaced one 20A GFI and start components. Same thing. To me the ohms seemed ok. Not sure what else to do. Any ideas? Thanks,

 

[zooby]

Are there other gfi's ahead of it? If so, how are they wired? Or multi-wire bc issues?

 

[ptonsparky]

Solenoids will trip GFCIs as they cycle. Check the contacts on the relays that control them. Are they worn?
I used items from RK Electronics to 'fix' the problem. I had one tripping a work bench GFCI just this week.
Coils of contactors will do the same thing.

RCS: Single Phase 120VAC & 240VAC | rkelectronics

www.rke.com

 

[ptonsparky]

FWIW, I used one on a small bath vent fan motor that was tripping a GFCI when it was turned off.
We also used one on a ceiling fan motor that was giving grief with some LEDs. IDR the full details on that one.

 

[zooby]

Solenoids will trip GFCIs as they cycle. Check the contacts on the relays that control them. Are they worn?
I used items from RK Electronics to 'fix' the problem. I had one tripping a work bench GFCI just this week.
Coils of contactors will do the same thing.

RCS: Single Phase 120VAC & 240VAC | rkelectronics

www.rke.com

I like this. where would this tie in at?

 

[ptonsparky]

I like this. where would this tie in at?

Typically at the coil terminals.
For the small vent fan motor, at the fan.
Ceiling fan was at the switch. Load to neutral.

These are Recognized components, not Listed so keep that in mind if you use them.