Southwire Romex SIMpull NM-B (nonmetallic-sheathed) cable may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90 degrees C (with ampacity limited to that for 60 degree C conductors) as specified in the National Electrical Code.
NM-B cable may be run in air voids of masonry block or tile walls where such walls are not wet or damp locations
NM-B cable is primarily used in residential wiring as branch circuits for outlets, switches and other loads
The voltage rating for the NM-B cable is 600 volts