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Old 05-16-2013, 01:41 PM   #1
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Is it necessary to ground a ceiling box?


I know that it is necessary to ground an outlet box, I do it using green screws and there is a hole in the commonly found metal handy boxes that sits on a bump in the back of the box that the screw fits in.

But is it necessary to ground a ceiling box (for lights and fans)? None of the holes on this octagonal box pictured can fit such a screw.

Is it necessary to ground a ceiling box?-forumrunner_20130516_134154.jpg

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Old 05-16-2013, 01:58 PM   #2
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Is it necessary to ground a ceiling box?


Yes, it is required to bond that box. If no hole will accept a typical 10/32 screw then you can either drill and tap your own hole or use a ground clip.

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Old 05-16-2013, 02:07 PM   #3
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Is it necessary to ground a ceiling box?


That box looks like it might have a couple premade holes the right size to tap?
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Old 05-16-2013, 02:20 PM   #4
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Is it necessary to ground a ceiling box?


Sorry, I'll take that back. The screw does fit in:

Is it necessary to ground a ceiling box?-forumrunner_20130516_142039.jpg
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Old 05-16-2013, 02:24 PM   #5
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Is it necessary to ground a ceiling box?


Hope your not planing on installing a fan there, that's not a fan approved box.
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Old 05-16-2013, 02:27 PM   #6
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Is it necessary to ground a ceiling box?


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Originally Posted by joecaption View Post
Hope your not planing on installing a fan there, that's not a fan approved box.
Oh no?
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Old 05-16-2013, 02:30 PM   #7
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Is it necessary to ground a ceiling box?


I believe a non-fan-rated box can be used to mount a fan, if the fan has another separate method of securing to the building structure.
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Old 05-16-2013, 02:31 PM   #8
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Is it necessary to ground a ceiling box?


That is a standard ceiling box. A fan box will have studs or bosses for the larger mounting screws for a fan.
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Old 05-16-2013, 02:32 PM   #9
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Is it necessary to ground a ceiling box?


will this be OK?

http://www.lifeandhome.com/thomas-an...FUOe4AodB1kAzw
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Old 05-16-2013, 02:34 PM   #10
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Is it necessary to ground a ceiling box?


Use this:

http://www.homedepot.com/catalog/pro...94a2d2_300.jpg
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Old 05-16-2013, 02:38 PM   #11
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Is it necessary to ground a ceiling box?


Also, if you're not going to use the other connectors shown in your pic, the NEC requires that those connectors be removed and the holes be covered with knock-out seals.
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Old 05-17-2013, 07:56 AM   #12
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Is it necessary to ground a ceiling box?


There are several options .... new contruction we use the middle 2... usually the FAN RATED pancake .. look close at the screws ....

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Old 05-17-2013, 01:53 PM   #13
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Is it necessary to ground a ceiling box?


Here is what I had rigged up before I was told I needed a box with braces. Feels darn sturdy. But is it still against the code?

P.S.: never mind the lack of wire nuts, this is just a temporary hack

Is it necessary to ground a ceiling box?-forumrunner_20130517_135306.jpg
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Old 05-17-2013, 02:05 PM   #14
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Is it necessary to ground a ceiling box?


Quote:
Originally Posted by amakarevic View Post
Here is what I had rigged up before I was told I needed a box with braces. Feels darn sturdy. But is it still against the code?
It's legal if you screw the fan into the 2x4 and not just hang it from the box.
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Old 05-17-2013, 02:18 PM   #15
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Is it necessary to ground a ceiling box?


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It's legal if you screw the fan into the 2x4 and not just hang it from the box.
thanks. i don't recon the design of many fans make that possible. so i will just go out and buy the proper box.

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