Any thoughs on images?

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mjmike

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I was out inspecting an older facility a Client of ours is looking at purchasing. While there, I came upon this receptacle (see images) which has the branch circuit feed going through a VERY small "conduit". It actually looks like brake line. However, the fastener clamps look factory. I can't even imagine 2-#12 (+ G ?) fitting, if indeed that is what is being extended. Is this some type of old surface raceway? Has anyone seen this before?

Mike



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I have never seen anything like that before. I would check to see what type of connector was used at the box. That appears to be off center and a factory knock-out is normally in the center. I had a strange experience when I first started to do residential jobs. Found some undersized rigid conduit at a house with really small junction boxes. It didn't bother me because I was going to remove it anyway. But I was curious and ask an older electrician from the area. It turned out that this was gas piping used when the lights were supplied by gas ( the electricians didn't want to waste it so they just pulled wire for electric lights ). If you ever see any black 3/8" rigid with small round junction boxes don't be surprised because I here this was quite common.
 
Don't be thrown off by the "factory clamps", non-electrical tubing has its own supporting hardware.
 
I should like to hope that "real conduit" can be bent 90 degrees without being collapsed in the manner shown in the first picture.
 
this looks like the predessor to MC cable as we know it now. I went to a trade day at the local supply house early (90's ?) and the big deal with this product was the labor savings just like MC cable. It was not around very long and MC cable came onto the scene shortly thereafter.
 
i am with sky2

the code lists MC cable as a factory assembley of blah blah enclosed in an armor of interlocking metal tape, or a SMOOTH or corrugated metal sheath

and the bending radius for the smooth sheath cable is much larger than the corrugated or interlocking type..

your picture is what i have imagined when i read this section before.
 
77401 said:
Help I can't see images.
Is this cuz i'm using Mozilla Firefox browser?
Thanks
Click to expand...
I, too, use Firefox, but with W2KPro, and see them fine.

That ultra-thin "conduit" may actually be a single conductor surrounded by a tubular neutral. I've never seen it close up, but I've heard about it.

Mike, any chance you can grab a pic with the receptacle cover removed?
 
LarryFine said:
That ultra-thin "conduit" may actually be a single conductor surrounded by a tubular neutral. I've never seen it close up, but I've heard about it.
Click to expand...

That sounds like you're describing pyro which I doubt very much that it is. That bend would have probably caused a short.
 
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