Jumper between bonding bushings

Sean_Carb

Member
When you have multiple bonding bushings in an enclosure, is it permissible to run a single jumper through the lugs on all of the bonding bushings and connect it to the ground bar? Or does the equipment grounding conductor from each conduit need to connect to the lug on the bonding bushing and then connect to the ground bar? I've only seen the latter installation completed, and my subcontractor has completed their installation using the first described method. Reference pictures below.

vs.
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
The first method is merely bonding the conduits, effectively bypassing the locknuts. The second method is what is done when there is a wire EGC.
 

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
If the raceway requires a wire type bonding jumper it does not have to be the EGC within the raceway, a properly sized external jumper is permitted. Often a separate conductor like in the first photo is easier.
 
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