Wiring an outdoor light and photocell


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Old 06-02-06, 10:18 AM
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Wiring an outdoor light and photocell

Here's a good one for you all to laugh at!

I had to remove an outdoor light and the photocell that was attached to it so I could replace the door frame. I did not pay attention to how I disconnected the wires so I'm having some fun figuring out how to put it back together.

Both the light and the photocell are attached to the junction box. The light has WHITE, BLACK and GREEN wires and the photocell has WHITE, BLACK, RED and GREEN wires.

What do I do with the RED Wire?

Thanks!
 
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Old 06-02-06, 10:35 AM
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The red wire is most likely switched hot wire (output).
 
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Old 06-02-06, 10:39 AM
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So then, I should connect the light's BLACK wire to the line's BLACK wire and to the photocell's BLACK and RED wires? Then 3 WHITES to WHITES and 3 GREENS to GREENS?
 
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Old 06-02-06, 10:44 AM
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No. Connecting the input of the photocell to it's output will render it useless.

A photocell is a switch. It needs an input and an output. The input (most likely the photocell black wire) get connected to the power black wire. The output (most likely the photocell red wire) gets connected to the light's black wire.

The photocell needs power to operate, so it needs a neutral. All three neutral wires (the white ones) get connected together.

The green wire is a ground wire. All the ground wires (green or bare) get connected together.
 

Last edited by racraft; 06-02-06 at 10:58 AM.
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Old 06-02-06, 10:55 AM
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Now that you say it, it's looking familiar!

Thanks ever so much!
 
 

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