334.10 Uses Permitted. Type NM, Type NMC, and Type NMS cables shall be permitted to be used in the following, except as prohibited in 334.12:
(1) One- and two-family dwellings and their attached or detached garages, and their storage buildings.
(2) Multi-family dwellings permitted to be of Types III, IV, and V construction.
(3) Other structures permitted to be of Types III, IV, and V construction. Cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of mate‐ rial that has at least a 15-minute finish rating as identified in listings of fire-rated assemblies.
Informational Note No. 1: Types of building construction and occupancy classifications are defined in NFPA 220 -2015, Stand‐ ard on Types of Building Construction, or the applicable building code, or both.
Informational Note No. 2: See Informative Annex E for determination of building types [NFPA 220, Table 3-1].