Intersystem bonding and GEC

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Greg1707

Senior Member
Location
Alexandria, VA
Occupation
Business owner Electrical contractor
There has been a lot of discussion about bonding grounding electrode jumpers to the Intersystem Bonding Bridge. The consensus is that this is not allowed. Since this is not allowed, is there a device or fitting that will bond jumpers to the main GEC? This would avoid taking the jumpers all the way to the service equipment or an electrode.
 

petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
There has been a lot of discussion about bonding grounding electrode jumpers to the Intersystem Bonding Bridge. The consensus is that this is not allowed. Since this is not allowed, is there a device or fitting that will bond jumpers to the main GEC? This would avoid taking the jumpers all the way to the service equipment or an electrode.

the only thing that is allowed to connect to the bonding bridge are connections to the other systems, like cable, phone, etc.

what GEC jumpers would you want to terminate there anyway? I can't think of any that would be allowed.
 

ActionDave

Chief Moderator
Staff member
Location
Durango, CO, 10 h 20 min from the winged horses.
Occupation
Licensed Electrician
There has been a lot of discussion about bonding grounding electrode jumpers to the Intersystem Bonding Bridge. The consensus is that this is not allowed. Since this is not allowed, is there a device or fitting that will bond jumpers to the main GEC? This would avoid taking the jumpers all the way to the service equipment or an electrode.
Split bolt.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
The permitted connection points for grounding electrode bonding jumpers are shown in 250.64(F). The only permissible splice point is a busbar not less than 1/4" x 2" with the conductors terminated to the busbar using a listed connector or exothermic welding (350.64(F)(3).

The intersystem bonding device is only listed for the connection of communication bonding conductors.
 

Greg1707

Senior Member
Location
Alexandria, VA
Occupation
Business owner Electrical contractor
1/4 x 2

1/4 x 2

The permitted connection points for grounding electrode bonding jumpers are shown in 250.64(F). The only permissible splice point is a busbar not less than 1/4" x 2" with the conductors terminated to the busbar using a listed connector or exothermic welding (350.64(F)(3).

The intersystem bonding device is only listed for the connection of communication bonding conductors.

Do you have a link to one of these busbars?
 

Little Bill

Moderator
Staff member
Location
Tennessee NEC:2017
Occupation
Semi-Retired Electrician
Do you have a link to one of these busbars?



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ec-copper-bus-bars-250x250.jpg
 
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