Loc: philadelphia pa 19125
bfdpoc221...i use both types. but it depends on the framing.(wood or metal studs)new work res./and all metal in comm. there is an advance in using plastic. (1) the cost per box,(2) no need to ground the box.
Loc: New York City
Here in New York City it seems you're required to use metal boxes by default, since use of armored cable is apparently a code requirement.
Although I've seen the blue plastic boxes for sale at the Home Depot...what they're used in I don't know. Everything I've seen/dealt with has always been metal (which I prefer since they're much sturdier - plastic always can crack or the screwhole strip out if you over-tighten).
You cannot use armored cable with plastic boxes, only NM, right?
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