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Old 03-20-2011, 11:12 AM   #1
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New porch light.


I am adding a new porch light. There is a 3 way switch on the inside of the door where I want to put the light. I bought a 2 gang box and a single pole switch and 12-2 wire. The new security light has 2 lights and the wiring is of 2 black and 2 white and 2 copper wires.

I ran the new wire and connected it to the single pole switch and connected the light. I ran a jumper wire from the 3 way switch to the single pole switch for power. I have power at the new switch and at the connection at new light but the light is not powered.

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Old 03-20-2011, 12:22 PM   #2
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New porch light.


If the power feed is not into the switch box, you are missing either the constant hot or the neutral, And there is no way to wire it with the existing wiring.

Tell us about the wiring that came into the 3 way switch box before you added anything. If you have a single 3 wire cable you do not have the correct wiring.

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Old 03-20-2011, 12:42 PM   #3
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New porch light.


There is a RED, BLACK, WHITE, COPPER. I ran a jumper wire from the red on the 3 way to the black on the single switch.
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Old 03-20-2011, 12:58 PM   #4
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New porch light.


Quote:
Originally Posted by rjniles View Post
If the power feed is not into the switch box, you are missing either the constant hot or the neutral, And there is no way to wire it with the existing wiring.

Tell us about the wiring that came into the 3 way switch box before you added anything. If you have a single 3 wire cable you do not have the correct wiring.


There is a RED, BLACK, WHITE, COPPER. I ran a jumper wire from the red on the 3 way to the black on the single switch.
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Old 03-20-2011, 01:20 PM   #5
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There is a RED, BLACK, WHITE, COPPER. I ran a jumper wire from the red on the 3 way to the black on the single switch.
You do not have the power feed you need to power the new switch and light. What you have is a constant hot (the one on the common terminal of the 3 way) and the 2 travelers from the other 3 way. You do not have a neutral. You need to run a new 2 wire cable to a location that has a hot and neutral, a nearby receptacle perhaps.
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