600A Main Bonding Jumper

[optimumbuilders]

I'm installing a 600amp service but I can't find any info code stating why there needs to be a neutral bus bar installed in the gutter box/raceway when the neutral and GEC are already being bonded in the CT cabinet as shown. It seems redundant to me and the local power company inspectors can't seem to give me a reason why their SR shows it's needed. I will have 3- 200amp disconnects so if this is the case I'd need a minimum 7 terminal bus bar in the gutter box if it's needed (3-N feeding, 3-N for disconnects, 1- MJB). From what I understand doing as they show in the SR would create multiple main bonding jumpers. (250.25(A)(5).

So my question is may I run the main bonding jumper that's shown in gutter box (note 1) to instead become (note 1,3,5,6) directly to the neutral terminal block in the CT cabinet and run a neutral directly to each disconnect to avoid a neutral bus bar in the in the gutter box?

SR Diagram Link-

https://esr.tep.com/wp-content/uploads/SR-609.pdf

 

[electrofelon]

No you don't specifically need a neutral bar in The wire way. What you do need is everything properly bonded, and everything on the line side of the service disconnect gets bonded to the neutral conductor. So there are other options to bond that wire way then having a neutral bar mounted to it. One is to run a bonding jumper back to the neutrals at a different location, or it could be bonded by the raceways with something like bonding lock nuts.

 

[augie47]

A lot of folks here will route their grounded conductors thru stud kerneys on the wireway