Multiple branch circuits in one EMT run.

[roger]

No, look for it yourself. I posted a resource already.

Already did trying to give you the benifit of the doubt but, my findings were it never existed and so that puts it back on you if you want to prove your claim.

I think you were simply mistaken and were using something like http://www.bevway.com/


Roger

 

[K8MHZ]

Maybe, but there is too many to check individually. We got the 6" EMT and associated fittings from Cooper Electrical Supply in NJ, if anyone would like to call them to see if they sell or used to sell 6" EMT, by my guest.

I'll do it.

But, which one in NJ was it?

http://www.sonepar-us.com/Locations/cooper_locations.html

The Cooper web site only shows EMT up to 4".

 

[kenaslan]

6" EMT is not made or sold in the USA. It is not code compliant. I am not saying it is not made, may be allowed in another country.

As far as the multiple circuits in a conduit, outside the fill and derating requirements, they must keep the flow balanced. I say this because this was an art in the 70?s and lost on the young electricians of today. By this I mean that you must have current flow in BOTH directions in the conduit. Example, when running travelers for 3 way switches one may forget to run the return or the neutral with it IN THE SAME conduit.

 

[iwire]

Perhaps it was 6" Ridgid aluminium conduit.

6" exhaust tubing for large diesel trucks.

 

[Ponchik]

6" EMT is not made or sold in the USA. It is not code compliant. I am not saying it is not made, may be allowed in another country.

As far as the multiple circuits in a conduit, outside the fill and derating requirements, they must keep the flow balanced. I say this because this was an art in the 70?s and lost on the young electricians of today. By this I mean that you must have current flow in BOTH directions in the conduit. Example, when running travelers for 3 way switches one may forget to run the return or the neutral with it IN THE SAME conduit.

It is NEC requirement to run all circuit conductors in the same raceway or cable. (hot, Neutral & EGC), however, I dont think that applies to 3 way installation.

 

[Fulthrotl]

6" EMT is not made or sold in the USA. It is not code compliant. I am not saying it is not made, may be allowed in another country.

trade size of EMT is 1/2" ~ 4", and that dates to 1976.

2011 NEC:

358.20 Size.
(A) Minimum. EMT smaller than metric designator 16
(trade size 1⁄2) shall not be used.
Exception: For enclosing the leads of motors as permitted in 430.245(B).
(B) Maximum. The maximum size of EMT shall be metric designator 103 (trade size 4).

 

[Salvador Santos]

Thanks for all the reply. Guess I have to take back my word.

Btw we already decided that we will just use cable tray to run all our circuits.

Thanks a lot!

 

[480sparky]

The maximum size of EMT allowed in 1959 was 2".