kolyan2k
Member
- Location
- United States
This is Mass amendment. I am running some feeders to equipment in dropped ceiling. Building is Type I or II, its a concrete 7-8 story apartment complex, my feeders are on 1st floor only which is used for common area and office space. Feeders are going in dropped ceiling which is not plenum rated. Can I use NM or need MC? And if I can use NM what does this mean: "unless run so as to closely follow the surface of framing members, running boards, or the equivalent, or unless connected to luminaires or other pieces of electrical equipment" So basically if my NM terminates at equipment, light fixture, or receptacle or its all good ? And if space is in fact a plenum then must use MC?
334.10. Amend (3) and insert an exception to read as follows:
(3) Other structures permitted to be of Types III, IV, and V construction. Cables shall be
installed within walls, floors, or ceilings that provide a thermal barrier of material that has at
least a 15-minute finish rating as identified in listings of fire-rated assemblies.
Exception to (2) and (3): For buildings or structures required to be of Type I or Type II
construction, Type NM, Type NMC, and Type NMS cables shall be permitted to be used,
provided that where so applied in buildings or structures exceeding three stories above grade,
circuits run in Type NM, NMC, or NMS cable shall not leave the floor or dwelling unit from
which the circuits originate.
334.12(A)(2). Revise to read as follows:
(2) In dropped or suspended ceilings in other than one- and two-family and multifamily
dwellings, unless run so as to closely follow the surface of framing members, running boards,
or the equivalent, or unless connected to luminaires or other pieces of electrical equipment in
accordance with 334.30(B)(2).
334.10. Amend (3) and insert an exception to read as follows:
(3) Other structures permitted to be of Types III, IV, and V construction. Cables shall be
installed within walls, floors, or ceilings that provide a thermal barrier of material that has at
least a 15-minute finish rating as identified in listings of fire-rated assemblies.
Exception to (2) and (3): For buildings or structures required to be of Type I or Type II
construction, Type NM, Type NMC, and Type NMS cables shall be permitted to be used,
provided that where so applied in buildings or structures exceeding three stories above grade,
circuits run in Type NM, NMC, or NMS cable shall not leave the floor or dwelling unit from
which the circuits originate.
334.12(A)(2). Revise to read as follows:
(2) In dropped or suspended ceilings in other than one- and two-family and multifamily
dwellings, unless run so as to closely follow the surface of framing members, running boards,
or the equivalent, or unless connected to luminaires or other pieces of electrical equipment in
accordance with 334.30(B)(2).
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