painted conduit

[swain240]

I just started with a company that is installing conduit in a hospital,
they are using green, orange, and blue conduit. My question in if the conduit
is painted how can you use it as an effective ground-fault current path?
(the conduit is painted end to end) by the way it EMT. all replays are greatly appreciated

 

[mdshunk]

If you're using set-screw connectors, you'll have a good ground. If you're pulling a ground anyhow, it's basically only bonding. I wouldn't get too worked up over it. Go ahead and sand off the paint at each fitting, and see how long it takes your foreman to jump your case.

 

[swain240]

some of the circuits are for sensitve equ. that are on isolated grounding rec.
so those conduits would then also have to be an effective ground fault current path. Im just trying to understand dont want to start a rukus on my 2nd day on the job

 

[Pierre C Belarge]

Are they being painted in the field or are these manufactured with the color?

 

[swain240]

there painted from the manufacture lables on top on paint i think from allied
but i was looking at the comp couplings were using the have a lil ridge that digs into the pipe mayve scraping the paint away?

 

[boboelectric]

I thought the color coded conduit from Allied is U.L. listed as ground conducting.

Bob O. 84,Pa.15330

 

[stickboy1375]

How does the paint hold when making bends? I'll I envision is the paint falling off after making a 90* bend...

 

[roger]

How does the paint hold when making bends? I'll I envision is the paint falling off after making a 90* bend...

It's more than just painted, it's some type of a chemical process although I don't know if anodized would be the correct term for the finishes on this line from Allied tubing.

We have been using the red Fire Alarm EMT for a number years now and there is no special considerations to installing it verses regular EMT.

For a while it was a little more expensive but now we are buying for the same price as plain EMT.

Roger

 

[brian john]

The allied EMT:

http://www.alliedtube.com/electrical-raceways/conduit/blue-emt.asp

(from their website)

Red Fire Alarm EMT Allieds Fire Alarm EMT with a bright red topcoat, FIRE ALARM EMT provides instant identification of fire alarm circuitry.


This Features:
Hot-galvanized for durability
Quick and easy installation
Damage-resistant strength combined with ductility for easy bending
E-Z Pull interior finish provides a smooth raceway for wire-pulling
Excellent EMI shielding characteristics
Full code and standard compliance; UL listed and labeled
Trade sizes from 1/2" through 2".