Supplemental ground conductors

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rojay

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Chicago,IL USA
I have a CT cabinet where my main service disconnect is located. The main bonding jumper is a strap that bonds the neutral to the enclosure, there is no direct connection between the neutral bar & ground bar

My question is - since I only have one available neutral terminal to terminate my water service GEC, can I terminate my supplemental ground rod & building steel bonding conductors to the CT enclosure instead of directly to the service neutral?

NEC 250.53(D)(2), and 250.104(A)(1) seem to support this since this is a service equipment enclosure. I’m just more accustomed to going straight to the service neutral.
 
rojay said:
Would you see this also being applicable in a residential load center with MCB? If I had my Ufer, and water service GEC running directly to my service panel, the Ufer could terminate at the separate EGC bar?
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They'd both need bonded to the nuetral not using just the connection to the can. If it was a separate structure from the service like an H frame then the uffer would go on the EGC bar and the ground and nuetral would be separate.
 
letgomywago said:
They'd both need bonded to the nuetral not using just the connection to the can. If it was a separate structure from the service like an H frame then the uffer would go on the EGC bar and the ground and nuetral would be separate.
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My personal preference would be to terminate them both at the neutral bar too.
BUT, if we’re talking about a panel where the main service disconnect is located, couldn’t the Ufer be seen as a supplementary electrode to the water pipe and be permitted to terminate to the separate EGC bar per NEC 250.53(D)(2)?
 
rojay said:
My personal preference would be to terminate them both at the neutral bar too.
BUT, if we’re talking about a panel where the main service disconnect is located, couldn’t the Ufer be seen as a supplementary electrode to the water pipe and be permitted to terminate to the separate EGC bar per NEC 250.53(D)(2)?
Click to expand...
Separate structure I believe it would have to be terminated to the EGC bar and not the nuetral.
 
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