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Old 05-02-2010, 05:44 PM   #1
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Receptacle Box Knockouts??


I just wired a new room I'm building in the basement and may have made a mistake so I need to confirm....

I used metal handy boxes for all the receptacles and switches (couldn't use plastic since I used metal studs). Anyhow, I wired them all through the bottom knockout and not the rear. Am I going to have a problem with the inspection?

Thanks!

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Old 05-02-2010, 05:52 PM   #2
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Receptacle Box Knockouts??


As long as the box is sizeed for the device and number of wires you are go to go.

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Old 05-02-2010, 05:55 PM   #3
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Receptacle Box Knockouts??


So, there's nothing in the electrical code stating that the rear knockouts must be used with new wiring inside walls?

BTW...thank you for your speedy reply!
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Old 05-02-2010, 05:57 PM   #4
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Receptacle Box Knockouts??


If the box has a knock out, then it can be used.
Did you use the bushing for the metal studs with the romex?
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Old 05-02-2010, 05:59 PM   #5
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Receptacle Box Knockouts??


Yes, I have the plastic inserts within the stud hole openings.
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Old 05-02-2010, 06:06 PM   #6
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Receptacle Box Knockouts??


One issue I can think of is the handy box.
To me a handy box is large enough for one cable and a device.
Can you take a picture of the boxes you used?
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Old 05-02-2010, 06:10 PM   #7
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Receptacle Box Knockouts??


JB....I can take a picture later tonight and post it. Figure about 9:00 PM. Thanks again!
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Old 05-02-2010, 06:17 PM   #8
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Receptacle Box Knockouts??


This is a handy box.

http://electrical.hardwarestore.com/...ox-238329.aspx
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Old 05-02-2010, 06:21 PM   #9
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Receptacle Box Knockouts??


You might want some of these too?

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Old 05-02-2010, 06:48 PM   #10
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Receptacle Box Knockouts??


Yes, I have those wire clamps on the boxes.

Actually, my boxes are slightly different...they include a bracket for mounting, etc. Will post pics in about 10 minutes.
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Old 05-02-2010, 07:00 PM   #11
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Receptacle Box Knockouts??


Here's some pictures. One of a receptacle on the metal stud and another on the furring strip covered concrete stud of the house foundation. So....will these pass inspection?




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Old 05-02-2010, 07:01 PM   #12
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Receptacle Box Knockouts??


I may be wrong, but I thought that with metal studs you must use BX and not Romex. I guess with the bushings it makes it ok?
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Old 05-02-2010, 07:12 PM   #13
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Receptacle Box Knockouts??


As long as you have the plastic inserts, romex can be used. I do know that much. LOL!
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Old 05-02-2010, 07:13 PM   #14
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Receptacle Box Knockouts??


Remember to tape your foam board joints and foam board the rim joist....

Be safe, Gary
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Old 05-02-2010, 07:26 PM   #15
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Receptacle Box Knockouts??


I prefer deeper boxes but otherwise looks like a decent install. You may get an anal inspector who will require the romex secured to the side of the stud.

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