Handbook Exhibit 250.34 neutral ground connection in two places

[cdiller]

Hello. Exhibit 250.54 in the handbook has me a bit confused. There is a neutral-ground bond located inside each disconnect as well as in the neutral terminal block in the gutter above them. Wouldn't this create a parallel path for the load neutral current to return on? I picture current coming back on the neutral and then some of it transferring to the conduit, gutter, and then back to the neutral terminal block in the gutter. What am I not getting? Would the current divide at this point? Thanks in advance for the responses.

 

[infinity]

I don't have the handbook but from you have described all the metal parts upstream of the service disconnect are bonded to the neutral. That is code compliant and required by the NEC. And yes some of the neutral current will travel on the parallel metal paths between the bonded equipment.

 

[cdiller]

 

[LarryFine]

On the line-side of a service, the neutral and metallic raceways and enclosures are considered a single conductor.