conductor length

Discussion in 'Electrical Forum discussion & Blog' started by Al G., Feb 23, 2014.

  1. Al G.

    Al G. New Member

    Messages:
    18
    Location:
    Woodbridge, VA
    I know conductors have to be long enough to extend 6" beyond the face of the wall box. Is that measured on the conductors entering the box or does it include the pigtails added for connection to the devices?
  2. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,534
    Location:
    North Carolina
    6 inches from the entry of the box and at least 3 inches on the outside of the box. Pig tails don’t count for or against this requirement
  3. Homeownerinburb

    Homeownerinburb New Member

    Messages:
    525
    Location:
    Los Angeles, CA USA
    And now we can debate the shape of sine waves!
  4. ankhseeker

    ankhseeker Member

    Messages:
    78
    Location:
    California
    You have to bend the wires in a sinewave shape? Oh yeah, they need to be at least 3 cycles.


  5. Al G.

    Al G. New Member

    Messages:
    18
    Location:
    Woodbridge, VA
    Thanks for the clarification. I thought it was 6" outside the box.
  6. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,534
    Location:
    North Carolina
    300.14 Length of Free Conductors at Outlets, Junctions, and Switch Points.


    At least 150 mm (6 in.) of free conductor, measured from the point in the box where it emerges from its raceway or cable sheath, shall be left at each outlet, junction, and switch point for splices or the connection of luminaires or devices. Where the opening to an outlet, junction, or switch point is less than 200 mm (8 in.) in any dimension, each conductor shall be long enough to extend at least 75 mm (3 in.) outside the opening.


    Exception: Conductors that are not spliced or terminated at the outlet, junction, or switch point shall not be required to comply with 300.14.
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