You are not logged in.

Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

dave snyder

Starting Member

Posts: 1

Location: Atascadero California


Tuesday, September 6th 2011, 5:18pm

irrigation system vs GFI switch

I have a Hunter ICC 800PL controller which has been installed and successfully operating for over 10 years. The 120V circuit passes through a GFI switch. Rarely has the system tripped the GFI. Recently though, it trips it quite often (I know it is the controller because I can isolate it from the circuit). I replaced the GFI and system worked well for about 36 hours, then tripped again and cannot be reactivated as long as irrigation system circuit is included. Hunter suggested the Quick Check so I wired the irrigation circuit around the GFI and ran the test. Everything checked out fine. Irrigation system works well with this configuration.
Any ideas or suggestions?


Supreme Member

Posts: 5,298

Location: Metro NYC


Tuesday, September 6th 2011, 7:11pm

I would believe that the only portion of a controller that should be physically able to trip a GFI is its power transformer. Have any lightning storms in the vicinity?

Rate this thread