Quote Originally Posted by Ohm_Boy View Post
As an aside, the GFCI protected circuit does not need a ground connection to the GFCI to be protected. GFCI devices are designed to measure differential currents between the hot and neutral conductors, and open the circuit if that difference exceeds the trigger, around 5 milliamps. It is assumed that any difference in current is being diverted out-of-circuit by a body somewhere. Naturally, a ground is required by the circuit according to code, but it is not necessary for the GFCI feature to function.
O.K. I bonded My pump motor and SWCG control unit together and ran the Bonding wire to the ground of the GFCI, if current from any source (say a bad extension cord as a bad example) was to somehow enter the Bonding/Grounding wire wouldn't that trip the GFCI? Or Does the GFCI only measure the currents between its own conductors?