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Old 12-24-2012, 08:16 AM  
drewdin
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Default connecting old BX cable to new romex wiring

Hi Guys,

I am replacing some wiring, the wires are from the 50's, I believe its BX cabling. My problem is that the old wires are wrapped in cloth inside of flexible metal conduit without a ground.

The new wires of course are line, neutral and ground in a jacket. How can I get the ground from the new cable to connect to the old casing of the cable, do I even connect it?

I was thinking that I would get a metal gang box, connect the ground to the metal box and then connect the old cable to the box to keep the ground going, is that correct? Thanks


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Old 12-24-2012, 10:48 AM  
JoeD
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If no ground present you are not permitted to extend or alter the circuit. It could be possible that the sheath is capable of being used as the ground.


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Old 12-24-2012, 11:04 AM  
drewdin
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Thanks JoeD, that was my question. So if I use a metal box and connect the ground to the sheath I should be good.
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Old 12-24-2012, 02:28 PM  
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As long as the wrap is grounded somewhere!
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Old 12-25-2012, 01:38 PM  
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FWIW, you can not use a plastic box with BX or MC cable. You must use a metal box with the proper fittings.
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Old 12-27-2012, 08:10 AM  
drewdin
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@Parrothead I did replace the plastic box with BX and romex connector fittings. When I saw this I knew it wasn't correct, that's why I posted. Thanks for the help
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Old 01-02-2013, 01:01 PM  
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I was able to open the wall and replace all of the old BX/armored cable with new romex. So i ended up staying with the plastic box and cover, thanks for the help.


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