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Can I extend an exiting 1 gang electical box (mounted to studs) with another?

Can I extend an exiting 1 gang electical box (mounted to studs) with another?


  #1  
Old 02-20-24, 07:28 AM
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Can I extend an exiting 1 gang electical box (mounted to studs) with another?

I have an exiting 1 gang electrical metal box. Is it allowable to add one box to it? And if so how? Will the face-plate cover work?
 
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Old 02-20-24, 07:41 AM
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Do you mean "existing 1 gang electrical box"?
 
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Old 02-20-24, 08:23 AM
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yes, 1 gang. But question could also apply to extend a 2 gang by 1 gang.
 
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Old 02-20-24, 10:15 AM
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Boxes cannot be extended unless they have mix and match removable side panels, as do some of the older metal boxes, or using extension rings on the front.

You can put another box next to an existing box, space permitting. They make metal strips that you bend and shape in a custom fashion, to hold a new box onto the wall board or lath, so the box does not need a stud to be fastened to.
 
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Old 02-20-24, 11:11 AM
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How about this Back to Back Box Spacer Connector
https://www.walterswholesale.com/gar...ector-1-2-inch
?
If I removed the nut in between?
 
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Old 02-20-24, 12:22 PM
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B2b spacer will work to join two boxes but they will not be close enough for a 2 gang wall plate to fit even if you eliminate the center nut. Single gang handy box covers might work but are not compatible with finished spaces.

Why not just replace with a 2 gang box?
 
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Old 02-20-24, 12:59 PM
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I wanted to separate a 110V dimmer from a 12V driver. Idea was to have two chambers for higher protection for 110V ever getting to 12V wires.
 
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Old 02-21-24, 03:29 PM
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There are 2 gang boxes that allow a divider to be installed between the high and low voltage as required.
 
destruct05 voted this post useful.
  #9  
Old 02-21-24, 04:28 PM
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Like this?
https://www.grainger.com/product/RACO-Partition-206L03

I think I would then drill a hole into that plate to get the 110V in. No matter my best intentions the 110V wires get near 12V wires if you have something like this:
https://www.lightology.com/index.php...rod_id=1092652
 
 

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