For use primarily in residential wiring including branch circuits for outlets switches etc. May be installed in both exposed and concealed work in normally dry locations. May be installed in air voids of masonry block or tile walls where these walls are not subject to excessive moisture or dampness. May be installed in locations with temperatures up to 90 DegreeC but with the ampacity limited to that of 60 DegreeC conductors. Added Circuit: For use primarily in residential wiring for branch circuits supplying outlets located in bedrooms and other areas.