CONDUIT INSULATING BUSHING

[VLK]

Can you split a bushing which threads on a conduit connector? The installer then screws it onto the connector and super glues the split.

[ October 27, 2005, 09:56 AM: Message edited by: VLK ]

 

[electric_instructor]

Re: CONDUIT INSULATING BUSHING

I'm sure that you can do anything ya want!

HOWEVER - if you cut a bushing, you destroy it's UL rating.

The NEC requires the use of RATED devices. Once CUT (even if re-glued) You have still altered, the tested, and approved UL rateing.

 

[electricman2]

Re: CONDUIT INSULATING BUSHING

I gotta ask, what is the purpose of splitting it in the first place?

 

[electric_instructor]

Re: CONDUIT INSULATING BUSHING

Probably forgot to put it on in the first place, and probably have MANY feet, unspliced, beyond the bushing! LOL

 

[rcarroll]

Re: CONDUIT INSULATING BUSHING

Forgetting to install the bushing before terminating the wires

 

[electric_instructor]

Re: CONDUIT INSULATING BUSHING

OR destroyed it during the pull.

 

[electric_instructor]

Re: CONDUIT INSULATING BUSHING

Been there, done that! LOL

 

[ryan_618]

Re: CONDUIT INSULATING BUSHING

Originally posted by electric_instructor:

The NEC requires the use of RATED devices.

1) What is "rated"? I know what "approved", "identified" and "listed" are, but I have never heard of the term "rated".

2) What is your code reference to back up your statement?

 

[ryan_618]

Re: CONDUIT INSULATING BUSHING

300.4(F) does not require the bushing to be listed, so I highly doubt that these fittings are listed. With that said, I know of no code reference to prohibits such practice, although I think a person might be able to stretch 300.18(A) to require this fitting to be installed before the conductors are pulled.

 

[don_resqcapt19]

Re: CONDUIT INSULATING BUSHING

Ryan,
The .6 sections of the raceway articles requires the use of a listed bushing.
Don

 

[dillon3c]

Re: CONDUIT INSULATING BUSHING

Originally posted by ryan_618:
so I highly doubt that these fittings are listed.

Ryan,
The plastic bushing I have in my hand,has UL on it brother.(I had to go check too)

*you still remain as my hero, brother Jackson.

 

[ryan_618]

Re: CONDUIT INSULATING BUSHING

Hmmm...I didn't think about the 3xx.6 sections. You are right Don.

*you still remain as my hero, brother Jackson.

 

[roger]

Re: CONDUIT INSULATING BUSHING

Here's a solution to the OP's delima.

From Arlington products

ADJUSTABLE THROAT LINERS
To be installed in fittings after conduit, fitting and wire are in place.
Allows installation to meet local electrical code.

Polypropylene.
CATALOG
NUMBER UPC/DCI/NAED
MFG #01 8997 TRADE
SIZE UNIT
PKG STD
PKG DIM
A DIM
B
4001 04001 1/2 25 100 .670 .900
4002 04002 3/4 25 100 .710 1.220
4003 04003 1 25 100 .880 1.450
4004 04004 1-1/4 10 40 1.015 1.735
4005 04005 1-1/2 10 40 1.015 2.050
4006 04006 2 10 40 1.250 2.312


E60812 LR49636

Roger

 

[mdshunk]

Re: CONDUIT INSULATING BUSHING

Roger posted a picture of what I've called an "Ut Oh" bushing. They can be installed after the pull is installed. I havn't forgotten many bushings, but I have destroyed my share in the pull. Sawed through a few PVC ells with the rope too. Arlington needs to make something to fix that problem now.