I've got a problem I'm trying to understand.
I have a new house under construction and I've wired it myself and passed the rough-in inspection and I'm ready for the final inspection but I want to be assured there are no surprises when the final takes place.
I have an extension cord plugged into a 20 amp GFIC at the temporary pole. Using the extension cord I plugged the bare wires into the extension cord (one circuit at a time) so that each circuit could be tested as well as outlets and switches. Every circuit has texted fine.
I've now installed the breakers in the service panel and attached all hots, neutrals and grounds. Using the extension cord method I've attached a wire to a 20 amp breaker to back-feed the panel. The reason is - to test all circuits operating through the panel. The underground service line has not been installed yet so there is no danger to linemen.
With the main breaker off and all breakers turned off I supply power to the panel but it trips the GFIC at the temporary pole. Using an Ohm meter I know the main bus isn't grounded so there is no problem there, and the main disconnect is off so it isn't sending power to the meter/disconnect outside.
I'm wondering if it's the nature of the GFIC to trip in this instance? I'm assuming you can back-feed through a normal 20 amp single pole breaker.
Something I haven't tried is to back-feed the panel using my generator. It has 20 amp breakers but they are not GFIC breakers.
Any suggestions would be appreciated.
I have a new house under construction and I've wired it myself and passed the rough-in inspection and I'm ready for the final inspection but I want to be assured there are no surprises when the final takes place.
I have an extension cord plugged into a 20 amp GFIC at the temporary pole. Using the extension cord I plugged the bare wires into the extension cord (one circuit at a time) so that each circuit could be tested as well as outlets and switches. Every circuit has texted fine.
I've now installed the breakers in the service panel and attached all hots, neutrals and grounds. Using the extension cord method I've attached a wire to a 20 amp breaker to back-feed the panel. The reason is - to test all circuits operating through the panel. The underground service line has not been installed yet so there is no danger to linemen.
With the main breaker off and all breakers turned off I supply power to the panel but it trips the GFIC at the temporary pole. Using an Ohm meter I know the main bus isn't grounded so there is no problem there, and the main disconnect is off so it isn't sending power to the meter/disconnect outside.
I'm wondering if it's the nature of the GFIC to trip in this instance? I'm assuming you can back-feed through a normal 20 amp single pole breaker.
Something I haven't tried is to back-feed the panel using my generator. It has 20 amp breakers but they are not GFIC breakers.
Any suggestions would be appreciated.