Following is a similar question and one of the better responses found in the following Message Board: ICC Bulletin Board » Code Chat » Electrical Codes » NM-B cable exposed in garage:
LPElectric](http://www.iccsafe.org/cgi-bin/ultimatebb.cgi?ubb=get_profile;u=00016984)
Contributor
In the Residential Code of NYS, at Table E3701.4 column #8 "**NM**" and row #15 indicate that **NM** run **exposed** and subject to physical damage is not permitted. This seems to indicate that wiring a residential auto garage with "romex" in the open stud-bays would not be permitted since the wiring could be deemed "subject to physical damage".
In the 2002 NEC, if I enter the code at 334.10 Uses Permitted, I note that NM is permitted in one family dwellings. Assuming the garage is attached, it is made a part of the dwelling. 334.10(A) permits NM for dry, exposed locations.
334.15 indicates that exposed wiring shall closely follow the surface of the building finish or of running boards. 334.15(B) indicates that cable shall be protected from physical damage where necessary.
Keeping that in mind, here are the questions:
- Is romex run through bored holes in open studding at waist level within the garage subect to physical damage?
if so,
- Is it necessary to enclose the wiring within a sheathing such as 1/2 gypsum board to protect this wiring method from physical abuse?
Thanks in advance for any interpretation you may offer.
Response from:
The Electrical Guru](http://www.iccsafe.org/cgi-bin/ultimatebb.cgi?ubb=get_profile;u=00013656)
Contributor
I don't believe the NEC is vague on this. To both answers I would say Yes.
Yes, it is subject to physical damage in the nature of the question asked.
Yes, Putting it behind Gypsum would make it not exposed and would meet the NEC.
90.4 gives us the inspector alot of levy in regards to interp. but we have to be understanding in the application.
If they ran NM Cable up lets say 8’ above the floor and it was exposed and in my interp. not subject to unintential physical damage then I would be fine with it.
The quick answer here is we Can’t Fix Stupid or Stupid Proof everything for the consumer but we can help protect the obvious.
Paul W. Abernathy
NEC Consultant/Lecturer/Author
CEU Provider - Virginia
ICC/IAEI Plans Examiner/Inspector
www.TheElectricalGuru.com
- Mike Holt Video Team Member
So, it sounds to me that this is a gray area that is subject to interpretation as to what could be subject to damage. I don’t see it as a code violation but should be noted as something that could be addressed by the buyer after the sale.