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    Switching

    So is a switch loop and a switch leg the same thing? I know when you bring power to the light then you have a switch loop down to the light switch and need a neutral in the box. But if you bring him power to the light switch do you still have a switch loop or just a switch leg up to light? Thanks

    #2
    A switch leg is the switched hot conductor going from the switch to the light. A switch loop would be a hot from the light down to the switch and the switch leg back up.

    -Hal

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      #3
      Originally posted by hbiss View Post
      A switch leg is the switched hot conductor going from the switch to the light. A switch loop would be a hot from the light down to the switch and the switch leg back up.

      -Hal
      So when you have a switch loop you don't have a switch leg?

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        #4
        Originally posted by mstrlucky74 View Post

        So when you have a switch loop you don't have a switch leg?
        Yes you do have a switch leg. The wire that returns to the light to turn it on is a switch leg-- you always have that-- The switch loop takes the hot conductor down to the switch and then takes the switch leg up to the light. So a switch loop incorporates the switch leg
        They say I shot a man named Gray and took his wife to Italy
        She inherited a million bucks and when she died it came to me
        I can't help it if I'm lucky

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          #5
          You have a switch loop if you bring the hot to the lighting junction box before the switch.

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            #6
            A switch leg is half of a loop. The other half of a loop is the ungrounded installed specifically to power the switch(es).

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              #7
              Thanks all.

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                #8
                So the white wire!?

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                  #9
                  So in this scenario. Power(12/2) to the switch and you would need 12/3 up to a box between lights. 2 switch legs(a & b) and one for power. Correct?
                  Attached Files

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                    #10
                    Originally posted by mstrlucky74 View Post
                    So in this scenario. Power(12/2) to the switch and you would need 12/3 up to a box between lights. 2 switch legs(a & b) and one for power. Correct?
                    Yes if you have two switches then a 3 wire cable (Sa, Sb, N) up to the ceiling is what you would need.
                    Rob

                    Moderator

                    All responses based on the 2017 NEC unless otherwise noted

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                      #11
                      Sorry!! In this instance, 3 switched hots and a neutral. 12/4!
                      Attached Files

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                        #12
                        Originally posted by mstrlucky74 View Post
                        Sorry!! In this instance, 3 switched hots and a neutral. 12/4!
                        Yes.
                        Rob

                        Moderator

                        All responses based on the 2017 NEC unless otherwise noted

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