Wall-mounted. 50A, 125/250V rating. NEMA 10-50. 3-pole, 3-wire non-grounding. E-Z wire terminals accept up to #4 conductors. Use with copper or aluminum conductors. Fits single or two-gang rigid conduit outlet box or 1-1/2” x 4” square box with 1/2” or 3/4” raised two-gang cover. Brown. Boxed.