W-J-800E, FEDERAL SPECIFICATION: JUNCTION BOX: EXTENSION, JUNCTION BOX; COVER, JUNCTION BOX (STEEL, CADMIUM, OR ZINC-COATED) (25 APR 1984) [S/S BY A-A-59214]

W-J-800E, FEDERAL SPECIFICATION: JUNCTION BOX: EXTENSION, JUNCTION BOX; COVER, JUNCTION BOX (STEEL, CADMIUM, OR ZINC-COATED) (25 APR 1984) [S/S BY A-A-59214]., This specification covers sheet-steel junction boxes, junction box extensions, and junction box covers for use with rigid metallic, intermediate metallic conduit, electrical metallic tubing, flexible metallic conduit, armored cable, nonmetallic sheathed cable and nonmetallic tubing when installed in accordance with the National Electric Code. It does not cover nonmetallic junction boxes, cast metal boxes, conduit bodies or hinged covered boxes.