All Questions
5 questions
0
votes
2
answers
1k
views
Grounding 3 wires to electrical box with 2 ground screws
I've installed a metal electrical box. There are 3 cables coming into the box. The standard box only has 2 ground screws. My inspector said I am supposed to have 1 single ground per screw...
So, how ...
- 503
3
votes
2
answers
4k
views
Is it bad to have multiple grounding electrodes?
I think this question gets close to answering my question, but I am not quite sure. I have a detached structure, powered by a feeder from the main panel where the ground and neutral are bonded. The ...
- 2,218
3
votes
2
answers
1k
views
How does a water meter affect the continuity of a grounding electrode system when a jumper is present?
250.53(D)(1) Continuity. Continuity of the grounding path or the
bonding connection to interior piping shall not rely on water
meters or filtering devices and similar equipment.
250.68(C) ...
- 415
10
votes
2
answers
85k
views
Is an explicit ground wire required through steel conduit?
We just bought a Chicago-area house and found that there's no ground wire in some of the recently re-wired areas. I thought that the national electrical code requires a ground wire for new ...
- 1,450
5
votes
2
answers
2k
views
Can two ground rods be bonded via a PVC conduit above ground?
According to my understanding, if a supplementary ground rod is installed, it must be bonded to the existing rod via a buried 6 AWG cable (NFPA 70).
However, because virtually every side of my house ...
- 271