Following listed 250.8

[hhsting]

I have following split bolts used to bond bonding jumper to grounding electrode conductor above ground.

It is for cell site and it’s going to be outside but above ground next to tower

KS26, Split Bolt Connector, Run/Tap: #2 AWG-2/0 AWG Str | KS26 | Burndy

Copper Split Bolt, Cu: 2 AWG-2/0 AWG (Str) (Run & Tap).

www.hubbell.com

I was wondering if the split bolts is suitable for out door above ground use and listed connector grounding and bonding 250.8?

 

[don_resqcapt19]

It is listed for direct burial so I see no issue with it being outside above grade. It is listed to UL 467 and that is the "Grounding and Bonding Equipment" standard.

 

[Greentagger]

And if your GEC is continuous per 250.62(C) or complies with conditions (1)-(4).

 

[LarryFine]

I'd be surprised if a split bolt is acceptable on a cellular installation.

 

[hhsting]

I'd be surprised if a split bolt is acceptable on a cellular installation.

Where is that in code not acceptable on cell install?

 

[LarryFine]

Where is that in code not acceptable on cell install?

Not code, job specs. Every one I've done required cad-welding of grounding joints.

 

[tom baker]

A spit bolt has a higher resistance than cad weld so in a lighting event thats bad. Cell towers go above and beyond Art 250 requirements
One I did had a 10x10x4 foundation, lots of rebar, 3 10 ft 3/4" ground rods connected with 3/0 copper. but a cell tower can withstand a direct lighting strike

 

[hhsting]

A spit bolt has a higher resistance than cad weld so in a lighting event thats bad. Cell towers go above and beyond Art 250 requirements
One I did had a 10x10x4 foundation, lots of rebar, 3 10 ft 3/4" ground rods connected with 3/0 copper. but a cell tower can withstand a direct lighting strike

But it’s not in compliance with NEC code and problem is you can’t Caldwell bonding jumper to GEC it needs to be continuous right?


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[electrofelon]

But it’s not in compliance with NEC code and problem is you can’t Caldwell bonding jumper to GEC it needs to be continuous right?


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Huh?

 

[hhsting]

Huh?

I meant split bolt does not violate or make it non compliance any code section does it? It’s a matter of design. Also I am bonding bonding jumper to GEC which needs to be continuous so how can Caldwell bonding jumper to GEC make GEC continuous?

 

[electrofelon]

I meant split bolt does not violate or make it non compliance any code section does it? It’s a matter of design. Also I am bonding bonding jumper to GEC which needs to be continuous so how can Caldwell bonding jumper to GEC make GEC continuous?

GEC does not need to be continuous, it can be irreversibly spliced. I would put cad welding in the irreversible category.

 

[hhsting]

GEC does not need to be continuous, it can be irreversibly spliced. I would put cad welding in the irreversible category.

GEC is existing from tower to ground ring. Bonding jumper connect to GEC thru split bolt. If designer electrical engineer chooses split bolts then I cannot do anything. I am not the designer only enforce code. Is it in any code that split bolts cannot be install in cell sites?

 

[electrofelon]

GEC is existing from tower to ground ring. Bonding jumper connect to GEC thru split bolt. If designer electrical engineer chooses split bolts then I cannot do anything. I am not the designer only enforce code. Is it in any code that split bolts cannot be install in cell sites?

Don answered the question post #2.

FWIW I dont think what you have is a GEC.

 

[hhsting]

Don answered the question post #2.

FWIW I dont think what you have is a GEC.

Little background cell tower they are doing structural work so they are drilling thru structural plan with engineer guidance metallic plates. The metallic plates are provided bonding jumper which thru split bolt connect to jumper whatever you call it from tower to ground ring.

The other side of the bonding jumper side structural plate has connects to the structural plates with ground clamp.

 

[tom baker]

If the cell tower is owned by a telecom company, the NEC does not apply. Just like a POCO is exempt from NEC.
Building and structural codes apply to tower.

 

[hhsting]

A spit bolt has a higher resistance than cad weld so in a lighting event thats bad. Cell towers go above and beyond Art 250 requirements
One I did had a 10x10x4 foundation, lots of rebar, 3 10 ft 3/4" ground rods connected with 3/0 copper. but a cell tower can withstand a direct lighting strike

Is it in code or any other NFPA that split bolts annoy be used for lighting protection?

 

[tom baker]

"Annoy"?
Re: split bolts- Not an NEC issue for other NFPA standards you will need to review them. This is an NEC forum.