Type NM-B (nonmetallic-sheathed cable) may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90 °C (with ampacity limited to that for 60 °C conductors) as specified in the NEC 1. NM-B cable is primarily used in residential wiring as branch circuits for outlets, switches and other loads. NM-B cable may be run in air voids of masonry block or tile walls where such walls are not subject to excessive moisture or dampness. Voltage rating for NM-B cable is 600-Volt.Copper conductors are annealed (soft) copper and UL ListedCable is available in a variety of colors, lengths and gaugesRun in air voids of masonry block and tile wallsUnique (SlikQuik infused membrane) Jacket construction allows for 50% reduction in pulling force resulting in easier installationConductors are annealed soft copperNM-B has two, three and four conductors and available with two neutrals, construction designed for easier pulling