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preventing short circuits in junction box

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preventing short circuits in junction box John 07-05-2006
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Posted by John on July 5, 2006, 10:36 am
Many receptacles or switches have side screws that slightly protrude
outwards, especially after a wire has been screwed on. If you put two such
devices in a junction box, one device's hot could potentially touches the
adjacent one's neutral, touches a bare ground wire, or touches the metal
junction box.

What is the proper way to prevent this from happening?



--
Posted via a free Usenet account from http://www.teranews.com


Posted by Tony Hwang on July 5, 2006, 10:50 am
John wrote:

> Many receptacles or switches have side screws that slightly protrude
> outwards, especially after a wire has been screwed on. If you put two such
> devices in a junction box, one device's hot could potentially touches the
> adjacent one's neutral, touches a bare ground wire, or touches the metal
> junction box.
>
> What is the proper way to prevent this from happening?
>
>
>
Hi,
I never saw it happen. If craftmanship is shoddy it may happen tho.
When everything is tight and properlly installed the chance of internal
short like that is very remote. Also there is plastic boxes nowadays as
well.

Posted by RayV on July 5, 2006, 11:09 am

John wrote:
> Many receptacles or switches have side screws that slightly protrude
> outwards, especially after a wire has been screwed on. If you put two such
> devices in a junction box, one device's hot could potentially touches the
> adjacent one's neutral, touches a bare ground wire, or touches the metal
> junction box.
>
> What is the proper way to prevent this from happening?
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com

Don't think it is proper but I have seen fixtures with electrical tape
wrapped around them that would prevent a short. I agree with Tony the
chance of a short is remote if everything is put together correctly.


Posted by nhurst on July 5, 2006, 2:13 pm

RayV wrote:
> John wrote:
> > Many receptacles or switches have side screws that slightly protrude
> > outwards, especially after a wire has been screwed on. If you put two such
> > devices in a junction box, one device's hot could potentially touches the
> > adjacent one's neutral, touches a bare ground wire, or touches the metal
> > junction box.
> >
> > What is the proper way to prevent this from happening?
> >
> >
> >
> > --
> > Posted via a free Usenet account from http://www.teranews.com
>
> Don't think it is proper but I have seen fixtures with electrical tape
> wrapped around them that would prevent a short. I agree with Tony the
> chance of a short is remote if everything is put together correctly.

The book I own and a few others who have done electrical work in the
past say that you should always wrap your recepticals and switches in
tape, just in case, especially in smaller boxes, because of all the
jimmying you need to do to get everything to fit.


Posted by Chris Lewis on July 5, 2006, 2:20 pm

> The book I own and a few others who have done electrical work in the
> past say that you should always wrap your recepticals and switches in
> tape, just in case, especially in smaller boxes, because of all the
> jimmying you need to do to get everything to fit.

In contrast, the one I have says that doing it is unnecessary,
and can lead to inspectors being overly suspicious of your work.

I don't like putting additional flammable materials inside the
box either.

It has some utility if you're dealing with trying to have live
outlets when drywallers are doing mudding, but, the only time
I've felt the need is with a damaged receptacle that was protruding
from a box for the short time necessary before I could replace it.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.

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