ECN Forum Forums Code Related Discussion NEC & other Code issues New MC all purpose cable

Is this MCAP wet location listed?

Iwire...I haven't seen it in the supply house yet.I have seen samples of #12 MC and also #12 HCF MC.

The metalic sheath was wrapped tight. The aluminum bond was #10 and was not covered with the mylar wrap.

gfretwell...dry location only with THHN rated conductors only.

I too would fear loose connecters at juction points leading to high impedance grounding with its use.

shortcircuit

OK that makes sense. (dry only) I guess that means not damp either. My only real concern with this is losing contact between the bonding conductor and the armor. A bit of corrosion would do that. I suppose part of the testing included "aging" this wire artificially in some way. I also wonder about how varying lengths perform. If they are short enough the armor itself is the bond, longer lengths have plenty of coincident contacts with the armor. Is there a sweet spot where there are not enough contact points with the armor to create a good bond but the armor itself is too long to be a good bond? Just idle musing.

I understand they design new products and do testing but the real test is 5-10 years in the field. Aluminum Romex was the hot lick in 1970. It was the devil incarnate by 1975.

I am not sure of any grounding issue coming n the future.

This new MC grounds just like AC cable has for years only now the bond strip is bigger.

My only problem will be getting engineers to accept it.