Is it a Pullbox or not?

[wwhitney]

250.102(D)(2).

Typo. I meant 250.102(E)(2).

I'm confused by that section of code. Does it apply to EGCs, or only to other 'grounding' conductors?

Start with the definition of equipment bonding jumper:

"The connection between two or more portions of the equipment grounding conductor"

I take it as implied that this refers to something which is not quite an EGC, as otherwise this would be duplicative of the notion of EGC. [I think the definitions are a bit fuzzy here, if you look at the definition of EGC, and consider that an equipment bonding jumper is part of the ground-fault current path, it seems an EBJ should be considered an EGC, but . . .]

In the case at hand, the equipment bonding jumper would be connecting the rigid conduit (an EGC) with a wire type EGC in the nonmetallic conduit (e.g. in the next downstream enclosure in the run of nonmetallic conduit). So it is jumping over a break in the expected EGC path. (The diagram in the OP would have no need for an EBJ.)

The point is that an EGC is generally required to be inside the conduit per 300.3(B), but 300.3(B)(2) has some exceptions, include EBJs installed in accordance with 250.102(E). Which gives an allowance for an EBJ to be outside the conduit for up to 6'.

Cheers, Wayne

 

[jap]

I never use LFNMC so I'm not one to judge.

Jap>

 

[Strathead]

That would be limited to 6 ft per 250.102(D)(2). Not sure how long the OP's LFNMC run is.

Cheers, Wayne

Good catch, I wasn't aware of this code, nonetheless, I assume it is usable in the OP's scenario.

 

[Strathead]

Typo. I meant 250.102(E)(2).


Start with the definition of equipment bonding jumper:

"The connection between two or more portions of the equipment grounding conductor"

I take it as implied that this refers to something which is not quite an EGC, as otherwise this would be duplicative of the notion of EGC. [I think the definitions are a bit fuzzy here, if you look at the definition of EGC, and consider that an equipment bonding jumper is part of the ground-fault current path, it seems an EBJ should be considered an EGC, but . . .]

In the case at hand, the equipment bonding jumper would be connecting the rigid conduit (an EGC) with a wire type EGC in the nonmetallic conduit (e.g. in the next downstream enclosure in the run of nonmetallic conduit). So it is jumping over a break in the expected EGC path. (The diagram in the OP would have no need for an EBJ.)

The point is that an EGC is generally required to be inside the conduit per 300.3(B), but 300.3(B)(2) has some exceptions, include EBJs installed in accordance with 250.102(E). Which gives an allowance for an EBJ to be outside the conduit for up to 6'.

Cheers, Wayne

I would also note that the title to 250.102(D) is:
(D) Size — Equipment Bonding Jumper on Load Side of an Overcurrent Device