Mixed use Romex and MC cable together

Location
San Diego
Occupation
Electrical contractor
I am bidding a job in san diego that is 14 residential units on the top floor and commercial retail on the ground level
Can I run romex on top and MC cable on the bottom if it is a wood framed building?
 

rc/retired

Senior Member
Location
Bellvue, Colorado
Occupation
Master Electrician/Inspector retired
If your building is wood framed construction, it most likely is a type III, IV or V construction. All of which allow type NM-B wiring.
Barring any local amendments, you can install "romex" throughout.

Ron
 

letgomywago

Senior Member
Location
Washington state and Oregon coast
Occupation
residential electrician
I'd there are meeting rooms in the commercial area those may need mc if over 100 people. The other issue is even in the residential area you'll not be able to run romex in any drop ceilings only hard ones.
 

herding_cats

Senior Member
Location
Kansas
Occupation
Mechanical Engineer
In my area (Kansas City) you would be forced to use MC throughout the entire building including the residential units above not because of NEC regulations, but local building code.
 
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