shortcircuit, 334.10 does not prohibit use of NM in commercial applications, it merely specifically permits it. It's not until 334.12(A)(1) where uses not permitted in 334.10 are prohibited.
Has 334.12(A)(1) been ammended in MA or only 334.12(A)(2)? Spirit of the law would say if they ammended 334.12(A)(2) to allow it, they imply an exception to 334.12(A)(1) as well... How is the ammendment worded? Does it mean you can install above drop ceilings, but they need to be 15-minute fire rated?
[This message has been edited by SteveFehr (edited 02-22-2007).]