I opened up a panel the other day that was in a warehouse, which the warehouse was only about 3 or 4 years old, and I noticed that they had multiple circuits using just one ground going out the panel and dasiy chaining the gounds together to each device which in this case it was rec and lights. Is this legal?
One ground on multiple circuits
- Thread starter darrenh
- Start date
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This is one of those situations where wording can make a big difference.
Does your term "ground" reference an equipment grounding conductor or a grounded conductor (in this case, neutral) ?
In either case, it is most likely Code compliant, but there would be specifics once we identify which "ground" you are referencing.
Does your term "ground" reference an equipment grounding conductor or a grounded conductor (in this case, neutral) ?
In either case, it is most likely Code compliant, but there would be specifics once we identify which "ground" you are referencing.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
One EGC can be shared by all of the circuits in the raceway. If the raceway is metallic you probably wouldn't need a wire type EGC at all.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
As long as the egc is sized to the largest size conductors in the raceway then you are fine. Thus, if you had #8 and # 12 ungrounded conductors in the raceway, then one #10 egc is all you need.
sure about that ?
my number is is supplying a 30 HP 480 v motor with a 100 amp breaker.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
sure about that ?
my number is is supplying a 30 HP 480 v motor with a 100 amp breaker.
You got me-- the egc is of course based on ampacity of the OCPD not the wire itself. You enjoyed that didn't you... :lol:
- Location
- Illinois
- Occupation
- retired electrician
In some cases you have to look at both the wire size and the rating of the OCPD.
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