Just an opinion poll---
Why would one specify MC cable over AC(BX) cable. Since the interlocking armor of MC is not a sufficient EGC in and of itself, you must utilize the internal ground wire. AC seems easier to install due the grounding capability of the armor in conjunction with the bonding strip. It also costs less. So, why spec. MC? (I have seen the armor come loose from the (box)connector in old residential applications, so this is one good reason. Any one else).

[This message has been edited by Redsy (edited 06-08-2001).]