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box fill

  1. jar546

    Box Fill Exercise (sharpen your skills)

    Alright, here we go! You have a 4" square metal junction box 2-1/8" deep with NO integral clamps. An 1-1/2" extension ring is added to the box. The box has 6 cable assemblies that terminate inside the box with the following wires: 2- 12/2 with ground MC cables 3- 12/2 with ground, 16/2...
  2. jar546

    Plastic Box Fill with Integral Clamps

    We all know that plastic boxes are marked with their cubic inches along with some other info. Most 2 gang and octo boxes have integral clamps to hold the NM cable in place, simply by knocking it loose and the plastic tab puts pressure on the cable to hold it in place relatively secure. Single...
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