Wierd GFCI problem

[cecwarrant]

Added a branch receptacle to an existing GFCI protected receptacle. Completed the wiring connections to the GFCI. Energized; Existing GFCI would not reset. Trips immediately when pushing reset button Checked all new wiring and found no cross connections. Replaced GFCI with new one (premium brand), same problem. Went over wiring with a volt meter and found no crossed wiring or leakage between conductors including ground to neutral. Where do I go now? Possibility of existing and new both being bad? HELP

Ron

 

[Don Farrell]

Ron,

1) Do you have an Volt/Ohm meter?
2) Leave the receptacle that you are adding out of the circuit. Does the GFCI receptacle trip?
3) Is there any receptacles down stream of the receptacle you are adding?

 

[cecwarrant]

Thanks for your interest. I solved the problem, I forgot to use the GFCI branch neutral to feed the downstream outlets. Age creates advanced CRS. Been doing this for years and should have remembered .

Ron