Lighting, Light Fixtures, Ceiling and Exhaust Fans - electrical box wiring
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lulabelle
07-02-05, 02:41 PM
I am installing a ceiling fan (with light) where a light used to be and have some questions on the wires.
The existing electrical box has 2 sets of wires - black, white, & bare (ground). Currently, the black from set 1 is attached to the black from the light fixture (with nut), the white from set 2 is attached to the white from the light fixture (with nut), the white from set 1 and black from set 2 are attached together with nut, and the bare wires from set 1 & 2 are twisted together (NO nut).
First question: is this correct? I am not familiar with the proper wiring of boxes with 2 sets of wires.
If this is all good, my assumption is to attach the blue and black from the fan to the black from set 1 and the white from the fan to the white from set 2. I would leave alone the attached set of white from set 1 and black from set 2. Then I would take the twisted bare wires (from both set 1 & 2) and attach them to the green from the fan using a wire nut.
Am I correct? Thanks for the help.
The existing electrical box has 2 sets of wires - black, white, & bare (ground). Currently, the black from set 1 is attached to the black from the light fixture (with nut), the white from set 2 is attached to the white from the light fixture (with nut), the white from set 1 and black from set 2 are attached together with nut, and the bare wires from set 1 & 2 are twisted together (NO nut).
First question: is this correct? I am not familiar with the proper wiring of boxes with 2 sets of wires.
If this is all good, my assumption is to attach the blue and black from the fan to the black from set 1 and the white from the fan to the white from set 2. I would leave alone the attached set of white from set 1 and black from set 2. Then I would take the twisted bare wires (from both set 1 & 2) and attach them to the green from the fan using a wire nut.
Am I correct? Thanks for the help.
John Nelson
07-02-05, 06:35 PM
There are many possible reasons that you might have two cables in one box, but your situation is clearly a switch loop. It is correct. Don't mess with it.
The plan you presented for connecting your new fan is perfect. Make sure the box is fan-rated and secured well enough to support the weight of the fan. In most cases, this requires you to replace the box and improve the mount.
The plan you presented for connecting your new fan is perfect. Make sure the box is fan-rated and secured well enough to support the weight of the fan. In most cases, this requires you to replace the box and improve the mount.