Does the wiring run thru the firewall in garage, if so then the firewall has been compromised. If the wiring is running thru the floor framing I see no problem with the firewall. I do see a problem with the wiring being subject to damage.
Gary, the wire breaches the firewall (ceiling) in the garage. I also think it could be subject to damage, so it should be boxed in. Dad says he doesn’t think it meets codes, I say there are no codes against this method.
Roy, I can’t find a code that says conduit must be used. These wires run straight down to the MDP. Conduit would have been ideal at installation, but not feasible to re-do it now, that’s why I suggested just boxing it in.
I’m sticking with my original comment. “Wire ran through East Bedroom closet should be boxed in to prevent damage, and floor and ceiling penetrations should be sealed with fire retardant sealant, as this is a breach in the garage firewall (ceiling) below”.
Regardless of when the house was built, this installation can’t be older than 2000 or 2001. That is when they started making NM with yellow sheath for 12-gauge and orange for 10.
Besides, the date when a particular batch of NM/Romex was manufactured is usually printed right on the sheath.
I couldn’t make it out from the pictures, but I would bet that this sloppy installation is no older than year 2000.
334.15 (b) was in NEC long before that.
All must remember that as Inspectors we don’t inspect to the minimum code. NEC is the minimum so if you feel that 6 inches is all you need in that closet you are nuts. I would suggest complete protection of that by means of a conduit, chase or some form of protection.
My response must have gone missing or disappeared in some other way, but here’s what I was saying:
This installation can’t be any older than 2000 or 2001. That is when they started color-coding NM cable jackets.
Also, the manufacture date is usually printed right on the sheath. I couldn’t make it out on the photo, but if in doubt, you can always find the date there, which should give you an idea of how recent certain wire run is.
334.15(B) is certainly older than the 1999 code cycle, probably much older.
My $0.02: Code issues aside, NM should not run exposed ANYWHERE, especially not in closets. NM offers virtually zero protection to its conductors.
The only acceptable place for it to be exposed, (again, in my very humble opinion) is between the joists in an unfinished basement.
And, not to sidetrack the thread, but I would not use NM in my own house if I could help it… I have very little confidence in it, having seen many issues with rodent damage, long siding nails, pulling damage, etc. etc.
Type NM cable is specifically allowed by the code to be run on the surface under certain conditions. Those conditions were not met in the picture from the OP. As far as the level of protection offered by properly installed NM the code and listing agencies feel the protection is adequate.
Type NM has been installed safely in many millions of homes. As far as pulling damage the same could happen pulling conductors in conduit. Even in conduit land like Chicago a long nail can punch through EMT.
I don’t believe anyone suggested that only 6" of protection was needed. The NEC clearly states in Robert’s quote that where necessary, protection should be provided.
My rule for when I call out exposed Romex such as this is simple based on whether or not people will interact with the wiring as they live in the house. You never know when somebody will throw their disappointing Ginsu knife set up onto that top shelf.