Junction Box Electrical Back Box Sizes

Suppose you have a 2 inch raceway coming into a 10 inch square box and a 2 inch raceway leaves it on the opposite side.

Junction box electrical back box sizes.

When you re working on electrical wiring and need an electrical box come to grainger for quality and durability. The national electrical code article 314 contains complete details and tables of electrical box sizes in dimensions and cubic inches and should be consulted for complete accuracy because the actual size of the box required in cubic inches depends on the number of wires that will be within that enclosure. A standard rectangular shape is the most common electrical box. The shape of an electrical box can help you identify its purpose.

Typical electrical junction boxes. Different electrical box sizes fit varying installation needs. Use 314 28 a to size pull boxes junction boxes and conduit bodies when using conductor sizes 4 awg and larger. Grainger carries a junction box selection to help you meet a wide range of different electrical wiring needs.

It houses a single electrical switch or outlet and comes in metal or nonmetallic units. They are shaped like boxes but have no back. Choose from a variety of sizes and shapes box depths that range from 1 2 to 4 deep and accommodations for one to six gangs. They are designed to be installed onto the front of standard electrical boxes to increase the box capacity or to bring the box flush with the drywall or other surface material.