Type NM-B cable is designed specifically for use in residential and commercial wiring of branch circuits. Installation above ground and in dry locations only. Approved for service to 600 volts. PVC (polyvinyl chloride) jacket and PVC insulated, nylon jacketed conductors with ground (WG). Flame-retardant and crush-resistant. UL (Underwriter's Laboratories) listed.
For general wiring of homes; farm buildings; stores and shops. It is flame and moisture resistant; but should not be used in wet locations. Type NM-B is primarily used in residential wiring as branch circuits' for outlets; switches; and other loads. NM-B may be used for both exposed and concealed work in dry locations at conductor temperatures not to exceed 90oC. Ampacity limited to 60oC for conductors