I understand that the grounds and neutrals should be grounded at the first disconnect only. I have a case where the meter base has a disconnect which has the neutral grounded and there is only the two lines and neutral going to the service panel in the house, no ground wire from meter disconnect to service panel. My question is, since there is no ground from meter disconnect to service panel, should the neutral, grounds and panel be bonded and grounded to a ground rod? I haven't been able to find this scenario anywhere.
Grounding question
- Thread starter tbarnett
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician
If the disconnect is set up as an emergency disconnect, not service equipment then only 3 conductors are required between the disconnect and the panel. It would be required to be labeled to indicate that it is an EM disconnect and not service equipment. Look at 230.85.
ptonsparky
Tom
- Occupation
- EC - retired
Time of the installation and location of meter/main will change the answers. 230.85 is relatively new. At one time a meter/main mounted remotely would allow for only three conductors.
You need to know which code cycle it was under.
You need to know which code cycle it was under.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
That's correct. For a separate structure and prior to the 2008 NEC a 3-wire feeder was permitted.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
That's only if the panel has the service disconnect and the disconnect adjacent to the meter is a EM disconnect. Can you post some photos?