C Crimp Listed For Grounding?

[kwired]

Yes, correct, reviewing the OP I see that is the application, so 250.64(C) applies. So as long as the splice is really in "the" GEC, and can't instead be construed as being in a bonding jumper (e.g. bonding jumper to GEC), then the OP needs an "irreversible compression-type connector(s) listed as grounding and bonding equipment". In which case either the Blackburn 54725 needs to shown to be listed under UL 467, or it needs to be changed out for a different splice that is.

Cheers, Wayne

I never seen where he said it was a GEC, but I have asked and haven't had an answer either.

 

[wwhitney]

I never seen where he said it was a GEC, but I have asked and haven't had an answer either.

In the original post:

Blackburn 54725 for attaching a #6 and a #4 GEC together.

But it would be a bit unusual to change size of the actual GEC, so maybe it's just splicing a bonding jumper to the GEC, which is not subject to 250.64(C).

Cheers, Wayne

 

[kwired]

In the original post:

But it would be a bit unusual to change size of the actual GEC, so maybe it's just splicing a bonding jumper to the GEC, which is not subject to 250.64(C).

Cheers, Wayne

That does tend to make one think it is likely connecting a bonding jumper. Which case it doesn't even need to be an irreversible connection method.

 

[sketchy]

It's a supply side tap on a dwelling. We're bonding the GEC from our PV service (#6) to the house service water GEC (#4). I was able to get approval from the state citing 250.8(A)(1) not realizing that 250.64(C) specifically calls out the grounding listing. I'm not concerned that it's a dangerous installation but I am surprised that these two section don't jive with one another.

 

[infinity]

It's a supply side tap on a dwelling. We're bonding the GEC from our PV service (#6) to the house service water GEC (#4). I was able to get approval from the state citing 250.8(A)(1) not realizing that 250.64(C) specifically calls out the grounding listing. I'm not concerned that it's a dangerous installation but I am surprised that these two section don't jive with one another.

Isn't the bold really a bonding jumper?

 

[BradPV]

Isn't the bold really a bonding jumper?

Not for a supply side tap, for that you have to bond the neutral again to the GEC at the first means of disconnect. This is considered a new service.

 

[Amps]

Maybe give the manufacturer a call, tell them the issue and request a letter to give to the inspector.

 

[kwired]

Not for a supply side tap, for that you have to bond the neutral again to the GEC at the first means of disconnect. This is considered a new service.

The source is a separately derived system. The supply side of disconnecting means is service conductors because they connect to service conductors.

 

[BradPV]

The source is a separately derived system. The supply side of disconnecting means is service conductors because they connect to service conductors.

How is the source seperately derived? Unless the neutral is switched, which is doubtful, that doesn't apply here.

 

[kwired]

How is the source seperately derived? Unless the neutral is switched, which is doubtful, that doesn't apply here.

Ok looking at art 100 definition is not really a separately derived system. The source is not a service either though according to art 100 definition of service.

Supply side taps still are service conductors up until you hit that first disconnecting means. After that they are essentially feeder conductors.

Getting back on thread topic a little more, there are multiple ways of installing GEC when there is multiple service disconnecting means involved, some those methods may result in bonding jumpers to one or more of the service disconnecting means, some methods you may run GEC to the service drop or lateral ahead of all the service disconnecting means.

 

[BradPV]

Ok looking at art 100 definition is not really a separately derived system. The source is not a service either though according to art 100 definition of service.

Supply side taps still are service conductors up until you hit that first disconnecting means. After that they are essentially feeder conductors.

Getting back on thread topic a little more, there are multiple ways of installing GEC when there is multiple service disconnecting means involved, some those methods may result in bonding jumpers to one or more of the service disconnecting means, some methods you may run GEC to the service drop or lateral ahead of all the service disconnecting means.

You can check this site out, it is the "NC Office of State Fire Marshal" they actually provide drawings that have helped me with local AHJ's who I felt were interpreting incorrectly. https://www.ncosfm.gov/electrical/temporarily-approved-solar-photovoltaic-electrical-schematics

 

[sketchy]

You can check this site out, it is the "NC Office of State Fire Marshal" they actually provide drawings that have helped me with local AHJ's who I felt were interpreting incorrectly. https://www.ncosfm.gov/electrical/temporarily-approved-solar-photovoltaic-electrical-schematics

We use either option 1 or 2. The crimp connecting the GEC's is what prompted this thread. Options 3 and 4 are not allowed where we are but I wish they were. My life would be so much easier.