bonding bushing on LB

[infinity]

This I doubt. You can drill a weep hole if you want, and you could drill and tap for a grounding lug if you want.

Cheers, Wayne

Like this? They failed to pull an EGC in the run of EMT that terminated with FMC.

 

[Zee]

How is the LB attached to the box now?

Rigid nipple

 

[LarryFine]

Rigid nipple

Then the bonding bushing (or wedge) should be simple.

 

[solarken]

Romex in basement,
then into an LB,
then a PVC box.

Why did he use a metal LB instead of a PVC LB?

 

[AC\DC]

Like this? They failed to pull an EGC in the run of EMT that terminated with FMC.

View attachment 2576439

Does tapping into that coupling void any listing??

 

[electrofelon]

Does tapping into that coupling void any listing??

No. There is actually no such thing as "voiding a listing". See post #19

 

[AC\DC]

No. There is actually no such thing as "voiding a listing". See post #19

Oooo that opens a lot of grey areas I like

 

[LarryFine]

Why did he use a metal LB instead of a PVC LB?

For that matter, if the incoming wiring is NM, why use any LB?

 

[jaggedben]

For that matter, if the incoming wiring is NM, why use any LB?

Because for some reason the box couldn't be where the penetration had to be?
It's also technically a violation to have the NM in a wet location. Having it enter the bix is debatably legal, but running through an LB not so much. But I see that all the time.

 

[Zee]

Why did he use a metal LB instead of a PVC LB?

Quality? Not sure.

 

[Zee]

The Rx is in the basement. The box is on the exterior wall. Higher than the basement.

 

[kwired]

Here's the applicable wording

(3) Bonding of Electrical Equipment. Normally non–
current-carrying conductive materials enclosing electrical
conductors or equipment, or forming part of such equipment,
shall be connected together and to the electrical supply
source in a manner that establishes an effective groundfault
current path.

Key word is conductors. OP has NM cables in there and this sounds like it's function is primarily a protective sleeve. If so that doesn't require bonding though it doesn't hurt to do so either.

The next thing is whether those NM cables should even be on exterior side of the house to begin with.

 

[electrofelon]

Key word is conductors. OP has NM cables in there and this sounds like it's function is primarily a protective sleeve. If so that doesn't require bonding though it doesn't hurt to do so either.

The next thing is whether those NM cables should even be on exterior side of the house to begin with.

I thought about that, but it seems like stretch. The cable assembly has conductors inside.

 

[kwired]

I thought about that, but it seems like stretch. The cable assembly has conductors inside.

You don't have to bond a metal tube that is simply a protection sleeve for NM cable. Or any other wiring method for that matter.

EMT run exposed down say a concrete wall to a switch or receptacle normally gets bonded mostly because the box it attaches to is required to be bonded. Technically should be able to put it in a non metallic box and not have to bond the sleeve. Almost nobody does this but shouldn't be a code violation if you did.

 

[electrofelon]

You don't have to bond a metal tube that is simply a protection sleeve for NM cable.

You may have a point....isn't there something in article 300 that states that?

 

[kwired]

You may have a point....isn't there something in article 300 that states that?

300.10 exception 1

 

[jaggedben]

300.10 exception 1

That isn't an exception to bonding requirements.

 

[electrofelon]

That isn't an exception to bonding requirements.

I read it over a bunch of times and I'm not really sure what it's saying

 

[AC\DC]

Wiring Methods, Part 1, based on the 2020 NEC

Article 300 is primarily concerned with how to install, route, splice, protect, and secure conductors, cables, and raceways. Check out this EC&M article to understand and apply the article 300 general requirements for wiring methods correctly! Visit MikeHolt.com/Newsletters or our Bio.

www.mikeholt.com

Read down —- states the exception