guys i need some good advice i dont do much irrigation work right now so im not up on all of the proper install methods. I have a job where i dont think the system is grounded. all of the valves are in the same box in a straight line, all connected together correctly. zones 1-5 run fine without any propblems but when it gets to zone 6 the timmer shuts off after about 7 minutes. Ive used my timmer to test the system... same thing happens. Used new wires w/o burrying them to test system with old and new timmer....same thing.... In the ground where the valves are is a wire comming from out of the ground going into the soil.... cant tell where it goes to or what it is attatched to ( if at all on the other end). My question is .. is this the ground wire..... if so what is on the other end of this wire? a metal rod? nothing but exposed wire? or does it run back to the home somewhere else to ground out? When groundign a system how do you properly ground the system ? How can you check to see if the system is grounded.? Thanks for the helps guys.