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Copyright2012-IMG_1141-120×160

The longer end of the Madison Bar steel switch box support is inserted first along side of the metal box.

The longer end of the Madison Bar steel switch box support is inserted first along side of the metal box.

This photo shows the 12/2 NM-B cable brought into the metal box and clamped. The ground wire is attached to the box using a separate 10-32 ground screw. Consult Article 314 in the National Electrical Code for the correct size electrical box needed for the amount of wires and devices that will be contained within.