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Old 03-11-2009, 05:29 PM   #1
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Adding Ceiling Light To Switch


I am adding a new ceiling light to a switch that currently controls a switched outlet. I have already unswitched the outlet and am getting ready fish down the new wire from the ceiling light, but seem to think it would be easier to put in new old work gang box and cut out the metal box instead of using the knock out and having to open abaove the current gang box location. My question is, my house does not have ground wires in cable runs, only grounding to each metal gang box; how would I ground the new ceiling light in the ceiling box is old work plastic and the gang box it is attached to is old work plastic? The new wire I ran does have a ground wire running from ceiling to existing gang box.

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Old 03-11-2009, 05:38 PM   #2
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Adding Ceiling Light To Switch


You said grounded to box? Do you have metal jacket cable?

Why not use a metal old work box with wings?

Just a simple light is being installed, right? With a plastic old work box?

BTW, your old post...

Adding Ceiling Light From Switched Outlet


Last edited by rgsgww; 03-11-2009 at 05:56 PM.
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Old 03-11-2009, 06:02 PM   #3
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Adding Ceiling Light To Switch


Not using metal jacket cable for the light fixture. The original plan was to ground to the outlet box with a wire nut but it seems rather difficult to fish the new cable from the existing box will properly securing to the metal box at the knockout without opening up above the existing box. That is what I am trying to avoid.
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Old 03-11-2009, 06:12 PM   #4
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Originally Posted by vboz5 View Post
Not using metal jacket cable for the light fixture. The original plan was to ground to the outlet box with a wire nut but it seems rather difficult to fish the new cable from the existing box will properly securing to the metal box at the knockout without opening up above the existing box. That is what I am trying to avoid.

Ok, but is the power source cable metal jacket or conduit?
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Old 03-11-2009, 06:14 PM   #5
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Adding Ceiling Light To Switch


metal jacket
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Old 03-11-2009, 06:45 PM   #6
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Adding Ceiling Light To Switch


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metal jacket

I have to go, I might be on at 8 pm cst.

Does this metal jacket contain a small silver color or aluminum wire?

There are metal old work boxes, do a search on them.
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Old 03-11-2009, 08:06 PM   #7
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No silver or aluminum
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Old 03-11-2009, 08:16 PM   #8
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Adding Ceiling Light To Switch


Are they fabric insulated wires? Most pvc insulated (type tw) armored cable (bx) has a bonding strip (the aluminum wire). Bonding strips are required to use the jacket as a ground. Normally they are bent around the jacket before the connector, so to check for it, you may need to remove the connector or box.

If you dont have one, the jacket cannot be used for ground. But I would check a little more before deciding you dont have a bonding strip.
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Old 03-11-2009, 09:12 PM   #9
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There is an aluminum wire from the bx to the outside of the box as best I can tell using a scope. I looked up the metal boxes and hopefully can find one locally before using the internet to order.
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Old 03-11-2009, 09:41 PM   #10
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There is an aluminum wire from the bx to the outside of the box as best I can tell using a scope. I looked up the metal boxes and hopefully can find one locally before using the internet to order.

Look for something like this at your hardware store

http://www.foxelectricsupply.com/con...uctNo=MUL40490

Then pick up a box like this, then the metal bends around the box, holding it in place. But be sure to use a bx connector, not the clamps in the back. They are only rated for nm.
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Old 03-13-2009, 04:37 PM   #11
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Thanks for all the help
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Old 03-13-2009, 11:09 PM   #12
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Thanks for all the help

No problem, how did it turn out?

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