Romex in metal building

[bluegoose972]

I have finished running 2x4's attached to the perlins from floor to ceiling and ready to start the electrical. Ultimately, the walls will be covered with OSB, so planning to run romex for all the electrical boxes, from 15 amp 110v up to 50 amp 220v receptacles. Have a perlin at 4 from from the floor, so going to lay all the wiring on top of the perline so it will be fully supported.

When I did some internet searches, there were many that were recommending the use of MC. But I believe it was primarily due to the wiring being exposed. I will most likely use MC on the ceiling since it will be exposed for the lighting.

Any reason that I shouldn't use romex like you would in a house? First time wiring something up and plan to have an electrician double check everything once I'm done. But would like to do it right the first time, so any help would be appreciated.

 

[strutaeng]

I don't think it is a problem. They make these anti-short bushings for this:

https://www.bhg.com/home-improvement/walls/how-to-install-metal-wall-studs/

Might have to go an electrical supply house to get them; I don't think the big box stores have them. I can't remember.

BTW, it is "purlin."

 

[bluegoose972]

Funny....I kept looking at the word and knew something looked wrong and kept adding a "e" at the end then erasing it! LOL

 

[bluegoose972]

actually, don't need the bushings at all. The purlins are 6" wide and the posts are 4" tubing. So I have 2" of clearance to get around the poles And with the 2x4" screwed onto the outside of the purlins, I have an extra 1.5" or 3.5" total. Should work pretty slick, I believe.

Thanks for the quick feedback.

 

[wyliesdiesels]

MC has the same protection requirements that NM-b has...

 

[readhead]

By the way purlins are on the roof. Girts are on the wall. You still have to secure the romex.

 

[TTMotorsports]

Did my shop the same way and used romex everywhere but the ceiling I ran conduit.