My lights, when turned on, are tripping the GFCI after they have been on for about 5 minutes. I have Jandy dimmer relays installed between the GFCI and the light circuit. Has anyone else had this problem? I changed the GFCI and it still does it. It seems odd to me that there would be a delay, because if there were a ground fault, it would be instant. Anybody got any ideas?