Pool light issue

[Stevedud]

I have two hayward 12v lights in my pool. SP058150. Both are operated from one switch. When I switch them on it trips the gfci. I found that one of the lights had water and I replaced it. It still trips the gfci. I replaced the switch and gfci and still trips it. I unscrewed the other light to see if there is water in it and none visible, I didn’t take it apart.

The power goes through the Intermatic PX300 box.

What next?

 

[ajw22]

Welcome to TFP.

Are the lights wired to a transformer?

Are the lights connected through a junction box near the pool?

Disconnect one light and see if the GFCI trips.

Disconnect both lights and see if the GFCI trips.

Basically isolate individual lights and components until you find the failing box that trips the GFCI.

 

[Danstoy]

I have two hayward 12v lights in my pool. SP058150. Both are operated from one switch. When I switch them on it trips the gfci. I found that one of the lights had water and I replaced it. It still trips the gfci. I replaced the switch and gfci and still trips it. I unscrewed the other light to see if there is water in it and none visible, I didn’t take it apart.

The power goes through the Intermatic PX300 box.

What next?

Hayward has an info sheet out on Resolving GFCI Nuisance Trips. The “approved” solution is to connect a Hayward GLX-HAL-XSNUB snubber capacitor (arc suppressor) across the primary leads (line to neutral) of the transformer on the load side of the light switch or relay.

 

[ajw22]

Hayward has an info sheet out on Resolving GFCI Nuisance Trips. The “approved” solution is to connect a Hayward GLX-HAL-XSNUB snubber capacitor (arc suppressor) across the primary leads (line to neutral) of the transformer on the load side of the light switch or relay.

Welcome to TFP and thanks for pointing out the snubber.

Attached are two Hayward bulletins on the issue of nuisance GFCI trips.