What does the elctrical code say about connecting a bare ground wire to a coated ground wire? Can they be connected or not? This is a healthcare facility that was built around 1965. Local electrical contractor says that it is against code and they will not continue with the project. Another electrical contractor says that it is ok and he will do the job? Any help would be great! THANKS
GROUNDING
- Thread starter krebsy
- Start date
- Status
Re: GROUNDING
Are you talking about a GEC? If so they cannot be spliced unless you use exothermic welding or irreversable compression connector. But there is no code requirement that I am aware of that says you cannot bond a tinned conductor to a non-tinned conductor.
Are you talking about a GEC? If so they cannot be spliced unless you use exothermic welding or irreversable compression connector. But there is no code requirement that I am aware of that says you cannot bond a tinned conductor to a non-tinned conductor.
- Location
- Illinois
- Occupation
- retired electrician
Re: GROUNDING
krebsy,
What do these circuits feed?
Don
krebsy,
What do these circuits feed?
Don
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: GROUNDING
NM in a hospital? Even built in "65", Of course I didn't start in the trade until "76" but I just never seen this. I guess I'm still learning.
I would find out if NM was allowed back in "1965" if it wasn't then these circuits need to be re-pulled with circuits that include a insulated grounding conductor. Unless their for lighting loads that don't have a switch in a the patient room. Then the EGC dosn't have to be insulated.
Keep in mind the FPN for 517.18(B)
NM in a hospital? Even built in "65", Of course I didn't start in the trade until "76" but I just never seen this. I guess I'm still learning.
I would find out if NM was allowed back in "1965" if it wasn't then these circuits need to be re-pulled with circuits that include a insulated grounding conductor. Unless their for lighting loads that don't have a switch in a the patient room. Then the EGC dosn't have to be insulated.
Keep in mind the FPN for 517.18(B)
Re: GROUNDING
DON,
Originally the facility was built in 1970 (not 1965) as a long-term inpatient rehab facility. All circuits (lighting , rec, appliances, etc.) were wired with NM cable. The entire building was wired with nm cable and all original circuits are still in use. Any additional work over the previous 8 years has been done in hospital grade MC cable. We are upgrading a hall to the emergency generator, which it currently does not have. The question is where do we stand when tying new circuits with MC cable to existing circuits run in NM cable with un-insulated ground wire. We are getting two different stories from contractors.
DON,
Originally the facility was built in 1970 (not 1965) as a long-term inpatient rehab facility. All circuits (lighting , rec, appliances, etc.) were wired with NM cable. The entire building was wired with nm cable and all original circuits are still in use. Any additional work over the previous 8 years has been done in hospital grade MC cable. We are upgrading a hall to the emergency generator, which it currently does not have. The question is where do we stand when tying new circuits with MC cable to existing circuits run in NM cable with un-insulated ground wire. We are getting two different stories from contractors.
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