Plastic/Fiberglass Ceiling Boxes -ground lug

[smiller123]

Do inspectors expect a ground lug in ceiling boxes? I know of around 5 states that require, but not in all cities. Is this going to continue?

 

[infinity]

If the box is non-metallic what does the ground lug do?

 

[smiller123]

Nothing - but states like Arizona, California, Nevada require I have tried reaching out to inspectors but no success yet.
Carlon and Cantex both make the boxes with the lugs

 

[rcarroll]

As I understand it, some jurisdictions, mine included, like to see the EGC connected to the ground stud in the light boxes because they/we don't pull the fixture down to verify the EGC is connected to the fixture.
Since the stud is bonded, they/we feel the stud will then bond the fixture strap & screws.
Make sense?

 

[infinity]

As I understand it, some jurisdictions, mine included, like to see the EGC connected to the ground stud in the light boxes because they/we don't pull the fixture down to verify the EGC is connected to the fixture.
Since the stud is bonded, they/we feel the stud will then bond the fixture strap & screws.
Make sense?

I'm confused, why would a non-metallic box have a ground stud?

 

[rcarroll]

A lot of them either come with the stud installed or a package of them come with the case of light boxes.
If the studs are not installed, the EC will have to install them with an 8/32 screw in an existing threaded mounting hole in the box.
The stud also has a threaded hole in which to mount the fixture strap.
As I stated earlier, an inspector will at least know at rough the metal fixture hardware will be bonded thru the stud.
This really isn't anything new. I trust someone can get a picture of one & post it.

Ron

 

[electrofelon]

As I understand it, some jurisdictions, mine included, like to see the EGC connected to the ground stud in the light boxes because they/we don't pull the fixture down to verify the EGC is connected to the fixture.
Since the stud is bonded, they/we feel the stud will then bond the fixture strap & screws.
Make sense?

Is this a local amendment or just something they "like to see"?

 

[rcarroll]

Is this a local amendment or just something they "like to see"?

I have to say, in my jurisdiction, it is NOT a written amendment. Just a verbal requirement from the AHJ.

 

[kwired]

If it is about concern of grounding the fixture yet they don't want to pull them down to check, simple test with a non contact voltage tester is easy way to tell if they are grounded. Turn light on, hold tester close to metal body and if it indicates voltage - the metal body is not grounded and has capacitive coupled voltage on it is why this works.

 

[hbiss]

News to me but if you scroll down to pages 129-130 of the Cantex catalog you can see them.

https://www.cantexinc.com/Portals/0/Documents/Product-Literature/cantex-product-catalog.pdf?ver=2019-12-17-110256-047

-Hal

 

[Little Bill]

I have to say, in my jurisdiction, it is NOT a written amendment. Just a verbal requirement from the AHJ.

How can you enforce a "verbal requirement"?

 

[drcampbell]

I'm confused, why would a non-metallic box have a ground stud?

My best guess: To assure that a metallic light fixture is grounded, even if it's installed by someone who doesn't know (or care!) that a ground wire ought to be connected to it.

 

[rcarroll]

How can you enforce a "verbal requirement"?

I don't!