We've been wiring our new church building using metal boxes and MC cable. The fire alarm fellows have been running their stuff using blue plastic device boxes. Is this allowed in places of assembly? I know the 518-4 ex. It seems odd that the use of plastic would be OK under certain curcumstances but not others. But then again, that is why I'm not on a code making panel. Go fugure. Just thinging out loud.
Blessings, Mark
