12/2 277 MC Cable

[enosez]

Just revceived two rolls of 12/2 MC Cable and noticed that the conducters actually are marked as THWN.

Anybody else ever notice this or have just never been paying attention?

 

[iwire]

I am not sure what you noticed.

330.112(A) requires MC cable larger then 16 AWG to be constructed with conductors from Table 310.13

 

[celtic]

Just revceived two rolls of 12/2 MC Cable and noticed that the conducters actually are marked as THWN.

Anybody else ever notice this or have just never been paying attention?

I'm going with: Never been paying attention.
Why?
MC is permitted in wet locations [330.10(A)(11)(c)....therefore it gets a "W" in the insulation class [T310.13]:wink:

I'd be more concerned if it did NOT have a "W"!

 

[winnie]

Are the conductors themselves marked, or the plastic tape between the conductors and the armor?

-Jon

 

[infinity]

Are the conductors themselves marked, or the plastic tape between the conductors and the armor?

-Jon

I believe he's saying that the conductors are individually marked. I've seen this on some brands of MC cable.

 

[peter d]

I've seen this on some brands of MC cable.

Perhaps the manufacturer ran out of their special non marked THHN and ran down to HD and bought some to keep the line running.

 

[celtic]

Perhaps the manufacturer ran out of their special non marked THHN and ran down to HD and bought some to keep the line running.

I've come across AC w/o the bonding strip.

 

[LarryFine]

I've come across AC w/o the bonding strip.

Me, too. We called it BX.

 

[mdshunk]

Just revceived two rolls of 12/2 MC Cable and noticed that the conducters actually are marked as THWN.

Anybody else ever notice this or have just never been paying attention?

I've seen it in romex too, every once in a while. I suspect that since the same people that make conductors also make cable, they might shuffle some of the conductors that have been marked for individual use over to their cable production lines from time to time.

 

[LarryFine]

Just revceived two rolls of 12/2 MC Cable and noticed that the conducters actually are marked as THWN.

I've seen it in romex too, every once in a while.

I'd save that for the jobs with the "you can't use stripped NM (or MC) because the conductor's aren't marked" inspector, just to watch his face when you show him the markings. :grin:

 

[mdshunk]

I'd save that for the jobs with the "you can't use stripped NM (or MC) because the conductor's aren't marked" inspector, just to watch his face when you show him the markings. :grin:

Thinking back, it might have only been one conductor in the cable. It's been a good while.