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Old 08-12-2012, 08:10 PM   #1
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Wiring a Shed light & internal power


I raised a shed and disconnected the wiring from the main building to the shed. Now it's a month later and it's time to hook the power back up. From the main building I have power into the shed with a white, black, red and copper wire. Originally the power went into the outside light fixture and then off of that it went to another light and two outlets. The original confiruation allowed of us to turn the shed's outside light on and off, from a switch inside the main building. With the power off to the light, we still had power to the outlets and internal light. The outside light fixture has black and white wires. The wire to the internal light and the outlets has a black, white, and copper wire. So how do I wire this so that the main building switch can control the outside light on the shed, while still having power to the internal light and outlets, regardless of the switch being on or off? (I wired the internal blacks and whites all together, which just ended up with the outside light always being on.)

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Old 08-12-2012, 08:35 PM   #2
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Wiring a Shed light & internal power


Connect the red wire to the switch at the main building while the black is connected to the unswitched power source. Both must be on the same branch circuit (same breaker) at the main bullding panel.

Then over in the shed, the red wiretogether with the white feed the outside shed light.

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Old 08-12-2012, 09:05 PM   #3
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Wiring a Shed light & internal power


You do not have enough wires to make a code compliant installation. The garage must have a disconnect (a single pole switch to turn off the entire garage).

You would have to bring straight power out to the garage on the black and white, then take power back to the house, then a wire to switch the light fixture. Bottom line, you have 3 conductors available, you need 4.

It is possible that you could use a remote switch, but I'm not too sure how they would react in cold weather.
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Old 08-12-2012, 09:10 PM   #4
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Wiring a Shed light & internal power


Kbuz,

ive always been confused by this. Does the disconnect have to be in the shed/garage or in the house?

if in the house, could there be a double switch, with the top say controlling the light and the bottom "everything else".

if in the shed, could they bring both the switched and "other" power to a 2 pole switch and then to the various loads?

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Old 08-12-2012, 09:12 PM   #5
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Wiring a Shed light & internal power


The disconnect has to be in the garage...otherwise the breaker could act as the disconnect.
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