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 90C. Ampacity limited to 60C for conductors. For general wiring of homes farms buildings stores and shops. It is flame and moisture resistant but should not be used in wet locations.