Conduit install problem

[randyo]

this is a bit complicated to explain but may be a common problem... Any Ideas are appriciated.


I have two immoviable cabinets.
I would like to install a 2" conduit between them.

The two holes(knock outs)are perfectly aligned.
The only thing I can come up with is geting an extra set of locking nuts for the threads and using the actual threads as the expansion..
Can you leave exposed thread on the outside of the cabinet...????

they dont make plummers "Unions" for Conduits, do they ???

 

[bennie]

Re: Conduit install problem

Not complicated at all

Three piece unions are manufactured for conduit. Some are call Ericson's. They are costly unless no other choice. You have a choice.

[ April 14, 2003, 10:28 AM: Message edited by: bennie ]

 

[Ed MacLaren]

Re: Conduit install problem

Randyo,

The only thing I can come up with is geting an extra set of locking nuts for the threads and using the actual threads as the expansion..
Can you leave exposed thread on the outside of the cabinet...????

Can't see anything wrong with what you suggested. Just cut (and thread) the conduit 1/2" longer than normal on one end, run a locknut all the way on, insert the long end of the conduit into one cabinet, then pull it back into the other cabinet, and use double locknuts.

Ed

[ April 14, 2003, 11:47 AM: Message edited by: Ed MacLaren ]

 

[james wuebker]

Re: Conduit install problem

Rando, they make a union for this. I used a lot of them on IMC conduit. Works great.
Bye

 

[iwire]

Re: Conduit install problem

Three Piece Steel Coupling.

Sometimes called ericsons or unions, as Bennie said this is the expensive route.


:roll: but that is the fitting.

[ April 15, 2003, 01:37 PM: Message edited by: iwire ]

 

[a.wayne3@verizon.net]

Re: Conduit install problem

Very observant................ I didnt catch it till i saw your post.... KUDOS............

 

[physis]

Re: Conduit install problem

I have to find out how to post pictures like that. That's really useful and too cool.

 

[tom baker]

Re: Conduit install problem

Meyers makes a special hub for this type application.
Also if you can use LT flex, T&B makes a chase type LT connector.

If you can use PVC, use a coupling at each cabinet, and then a box adapter that glues in from the inside.

All depends on what type cabinets and where. Ericksons are fast and readily available.

 

[gregory]

Re: Conduit install problem

It is not an approved installation to use a chase nipple for grounding a box into a coupling. You could get a two piece thinwall connector and use that. you put the threaded part over the thinwall and them put it in place, then you put the other end on through the knockout in the box. check with your supply house for this fitting. How about a back to back conduit in the bottom of the boxes.
Greg

 

[wireman]

Re: Conduit install problem

gregory

Why is a chase nipple into a coupling not acceptable?

 

[randyo]

Re: Conduit install problem

I thought of the coupling idea but look closely at them and you will see a stop in them, so I would still be to short.

I think I will ave to use EMT and have it threaded for me at the shop. And go with the double lock nut therory...I can have the guys make the threads a little longer.

The question is??? can they thread EMT like a plummers pipe??? Has it the same thread count???


thanks again for all the input.

 

[peter]

Re: Conduit install problem

Randyo,
I personally like the idea of the close coupling idea.
As for the idea of threading EMT, just look at the depth of the threads on a plumbing pipe or rigid. The depth of the threads are greater than the thickness of the EMT wall. You would end up with a little coil of metal at each end. ~Peter

 

[Ed MacLaren]

Re: Conduit install problem

Randyo,

When I responded to your question earlier, I was referring to rigid metal conduit.

You mentioned threading, and I assumed you knew that EMT is not designed to be threaded.

Ed

 

[gregory]

Re: Conduit install problem

wireman,
A chase nipple is not UL listed for bonding by screwing it into a coupling. It is only approved for use with a locknut.

Greg

 

[iwire]

Re: Conduit install problem

Greg,

Could you give a code reference for that?

Bob

[ April 19, 2003, 06:54 AM: Message edited by: iwire ]