I have recently finished a small retail store that has a 600 amp single phase service. I have a CT cabinet that goes into a service disconnect which feeds a 600 amp main panel. The main panel has a 200 amp breaker in it that feeds another sub panel.
The inspector came and did a final inspection and he tried to test the grounding system. He's saying that his tester failed to complete the test and it showed an error code and that code means there is voltage or current on the ground and that there's a problem somewhere. I have a ufer ground and a building steel ground, nothing to water line as its plastic. All GECs terminate back to disconnect where the neutral and ground are bonded together. From there to panels its 4 wire with ground and neutrals isolated. I went to job and double checked everything and it's all wired correct, there is no voltage on the ground and my clamp on amp meter shows .5-.7 amps on the GECs. Is this normal? I guess I'm questioning this inspector and his new "toy". I think he just got it. Please let me know of any ideas or things I should check. Thanks!
The inspector came and did a final inspection and he tried to test the grounding system. He's saying that his tester failed to complete the test and it showed an error code and that code means there is voltage or current on the ground and that there's a problem somewhere. I have a ufer ground and a building steel ground, nothing to water line as its plastic. All GECs terminate back to disconnect where the neutral and ground are bonded together. From there to panels its 4 wire with ground and neutrals isolated. I went to job and double checked everything and it's all wired correct, there is no voltage on the ground and my clamp on amp meter shows .5-.7 amps on the GECs. Is this normal? I guess I'm questioning this inspector and his new "toy". I think he just got it. Please let me know of any ideas or things I should check. Thanks!
