Steel City 521711234EW-25R Outlet Boxes

It's a 4 inch square steel box, 4 inches by 4 inches by 2-1/8 inches deep, with 30.3 cubic inches of volume. That capacity is what you work against when you count conductors, devices, clamps and grounds for box fill, so note it before you load the box up on a multi-wire branch circuit.

The Steel City 521711234EW-25R is a steel square outlet box carrying a weatherproof rating of N, so for an outdoor or wash-down location choose a box built for it. The Mulberry Royal Mountie P473899 is a die-cast aluminum weatherproof 1-gang outlet box, and the Thomas & Betts 2IH3-1 Red-Dot is a 2-gang conduit outlet box with three 1/2 inch hubs, which lets rigid or IMC land directly in a threaded hub rather than through a knockout.

Only where a nonmetallic box suits the wiring method. The Steel City 521711234EW-25R is a steel box, 4 inches by 4 inches by 2-1/8 inches deep with 30.3 cubic inches of capacity and 13 knockouts, so it bonds through the metal raceway and takes a large conductor count. The Cantex EZ Box is a PVC multi-gang residential outlet box, which means no metallic bonding path through the box and a gangable rectangular form rather than a 4-inch square.

No. The Steel City 521711234EW-25R is a standard steel wall- and ceiling-mounted outlet box listed under UL E2969 for ordinary locations. For a classified area, use an explosionproof conduit outlet body: the Appleton GRJ series GRJL50 and the Appleton GRJS universal box are explosionproof malleable iron conduit outlet boxes built for that duty.

Thirteen knockouts, which gives you entry options on every side plus the back for conduit or cable runs you don't have to plan perfectly in advance. It mounts to a wall or ceiling surface.

The Steel City 521711234EW-25R is a steel box, which is what you want where conduit or metal-clad cable is landing and the raceway is part of the grounding path. For nonmetallic residential wiring with multi-gang device locations, a PVC box like the Cantex EZ Series multi-gang residential box is the usual choice instead.

The Steel City 521711234EW-25R is a general-purpose 4 by 4 by 2-1/8 inch steel square box with a single outlet position and 30.3 cubic inches of volume; a range or dryer outlet is normally a purpose-built assembly. The Pass and Seymour P242RRD is a thermoplastic range and dryer box made for that application, so specify it rather than adapting the square box with a device ring.

Form factor and construction. The Steel City 521711234EW-25R is a square steel box, 4 by 4 by 2-1/8 inches, 30.3 cubic inches, with 13 knockouts for cable connectors or raceway. The Appleton GRT75 is a malleable iron round conduit outlet box, so it takes a round cover and threaded conduit entries rather than a square device ring.

The Steel City 521711234EW-25R is a single-outlet 4-inch square steel box that relies on its 13 knockouts for raceway and cable entries. If you want factory hubs and two device positions, the Thomas and Betts 2IH3-1 Red-Dot is a 2-gang conduit outlet box with three 1/2 inch hubs.