[Top] [All Lists]

Re: quickie elect. question

To: Trevor Boicey <>,
Subject: Re: quickie elect. question
Date: Tue, 03 May 2005 02:37:17 +0000
I wouldn't be even close to the electrician of the list, but I did read a fine 
homebuilding a few months back that talked about an older type of wiring that 
used the sheithing as a ground.  maybe since his house is old enough not to 
have three-prong outlets, his has this?

this was not the metallic-armored stuff you see in permanent installations 
nowadays.  I can probably find and scan the article, assuming I'm not breaking 
a copywright law.


>    ...but I'd be very curious to see if any application allowed the use 
> of the BX shield as a ground. (and a bit surprised I guess... it sounds 
> very wrong to me)
>    BX wire is normally to be used as "armoured wire", where it will be 
> exposed to possible damage. Such as in a garage where a length will have 
> to go down a wall exposed, or to a wired-in machine like a permanent air 
> compressor where the cable is exposed from a junction box into the unit.
>    The metal shield is designed to protect from piercing, say if 
> somebody leans a ladder against it, or hits it with a tool, or similar. 
> By code, certain places require it for this reason.
>    But any BX I've ever installed has a normal ground in the bundle.
>    Personally I hate working with the stuff, the little insulating plugs 
> that have to be jammed into the end to stop chafing are just way too 
> hard to get in and never leave me feeling very happy that they are in right.

<Prev in Thread] Current Thread [Next in Thread>