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Old 09-15-2011, 09:09 AM   #1
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Attaching plastic junction boxes


Is it permissible (by NEC) to attach a plastic junction box by running a screw through the bottom of the inside of the box into a cleat below (between two studs)?

Thank you kindly.

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Old 09-15-2011, 09:23 AM   #2
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Attaching plastic junction boxes


Technically no. What are you trying to do?

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Old 09-15-2011, 09:28 AM   #3
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Attaching plastic junction boxes


The horizontal variants of either of these might serve you well if you installed them vertically (if I understand how you're trying to mount it)
http://www.aifittings.com/catalog/fa...-outlet-boxes/
http://www.smartboxinc.com/electrical_boxes.php#1

It's probably simpler just to use an old work box
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Old 09-15-2011, 11:01 AM   #4
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Attaching plastic junction boxes


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Technically no. What are you trying to do?
I need to precisely position several j-boxes between studs. I could frame a horizontal 2x4 both above and below where I need the box, then put a little cripple vertically between those two at precisely the right location and attach the j-box to that.

On the other hand, if I could screw through the bottom of a box, I could simply put a horizontal 2x4 between the studs at the exact height and attach the box anywhere I wanted.

The boxes "eek" refers to look perfect.
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Old 09-15-2011, 11:05 AM   #5
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Attaching plastic junction boxes


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Originally Posted by eek View Post
The horizontal variants of either of these might serve you well if you installed them vertically (if I understand how you're trying to mount it)
http://www.aifittings.com/catalog/fa...-outlet-boxes/
http://www.smartboxinc.com/electrical_boxes.php#1

It's probably simpler just to use an old work box
Problem is, it's new work and the "wall", once it's done will be 1.75 inches thick. Sheetrock plus granite back-splash.

Those boxes you refer to are PERFECT. In fact, I could run a 2x4 horizontally between the studs and attach a horizontal box vertically or a vertical box horizontally to get EXACTLY what I need. I am trying to find where to buy them in North Carolina.
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Old 09-15-2011, 11:14 AM   #6
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Attaching plastic junction boxes


Carlon makes boxes that have a plate on the side to be screwed into a stud, and they make adjustable ones like that also.
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Old 09-15-2011, 11:17 AM   #7
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Attaching plastic junction boxes


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Carlon makes boxes that have a plate on the side to be screwed into a stud, and they make adjustable ones like that also.
jbfan,

Those are great little boxes. Problem is, I don't have a stud to attach them to. I only have a horizontal member and want to mount the box vertically.

Thoughts?
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Old 09-15-2011, 11:23 AM   #8
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Attaching plastic junction boxes


Gotha!

How many do you need and how soon.

I have a few that I may never use.
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Last edited by jbfan; 09-15-2011 at 11:29 AM.
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Old 09-15-2011, 01:30 PM   #9
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Attaching plastic junction boxes


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Gotha!

How many do you need and how soon.

I have a few that I may never use.
Prolly 8 or 10 by the time I count them all up.
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Old 09-15-2011, 01:53 PM   #10
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Attaching plastic junction boxes


I know I don't have that many.
I would put in a 1900 metal box, with a 1.75" mud ring.

Here's one a little over the top, but kinda neat.
http://gw.vtrenz.net/?O3B8KRAL1H
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Old 09-15-2011, 02:03 PM   #11
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Attaching plastic junction boxes


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I know I don't have that many.
I would put in a 1900 metal box, with a 1.75" mud ring.

Here's one a little over the top, but kinda neat.
http://gw.vtrenz.net/?O3B8KRAL1H
Is that cool!

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