ddlux: Normally a GFCI driven circuit is for lower current devices that the user might plug in, such as lights. fans, space heaters, etc. Other heavy load permanent items like the pool pump or heater are wired ahead of the GFCI. The small current between the neutral and one of the 220 legs (110V) is needed for the Insteon engine in the switch to operate.
Reply To: EZSwitch30 with a GFCI circuit 2017-12-21T14:51:28+00:00