I have a question about proper insulation of romex wiring. Home is built with concrete blocks, framing is done in metal studs. There are steal joist supporting the 2nd floor. I know I can use metal stud bushings to pass through the metal studs, but what is the best way to insulate the romex that passes through the steel bar joists? And also what is the best insulation to use for strapping supports to the metal studs? I have a few ideas but the customer is on a budget and wants to use romex rather than emt or MC cable. Can you use polyethylene noodles to protect electrical wiring by code? Looking for ideas that might be cost effective. Thanks for any help!
Romex wiring in concrete home with metal studs
- Thread starter BR77
- Start date
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
What does the steel joist look like? A picture would help.
They are the K style joist.
I'm not currently at the home so this is the best I can do right now. Hope this helps
I'm not currently at the home so this is the best I can do right now. Hope this helps
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
I don't think you need to do anything special, you can zip tie the Romex right to the trusses.
letgomywago
Senior Member
- Location
- Washington state and Oregon coast
- Occupation
- residential electrician
As long as the edge it's against is smoth you don't need to worry any sharp edges or punched holes you'll want the bushings. If you're worried look into the Gardner bender stack it's they do both wood and steel stud
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
NM cable sheath is allowed to be in contact with metal as long as it's protected against damage.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Glad I could help.....hahahaha
Eddie702
Licensed Electrician
- Location
- Western Massachusetts
- Occupation
- Electrician
Zip tys with the screw holes for metal studs