Coiled copper around terminated wire?

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Have seen that type termination maybe 40 or 50 years ago, forget where now.

Have been waiting for someone more knowledgeable than myself to show the device used and the listing or an old catalog. I tried to find something on the internet but no luck.

However, think that there was a 'reverse wire nut' type device you screwed onto the end of a stranded wire, then unscrewed the cap and the coil was left on the stranded wire.

Anyone else recall those items ?
 
junkhound said:
Have seen that type termination maybe 40 or 50 years ago, forget where now.

Have been waiting for someone more knowledgeable than myself to show the device used and the listing or an old catalog. I tried to find something on the internet but no luck.

However, think that there was a 'reverse wire nut' type device you screwed onto the end of a stranded wire, then unscrewed the cap and the coil was left on the stranded wire.

Anyone else recall those items ?
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Ha! Fascinating. So maybe we can't rule out that this is some kind of listed product after all.
 
I'd say it was done by the electrician to stop the small size conductor splaying out in the large hole of the lug. This way all the strands get compressed by the terminal screw. The coil you see is made from a spare strand of the conductor, 1 less piece for the scrapman.
 
loonelectrics said:
I'd say it was done by the electrician to stop the small size conductor splaying out in the large hole of the lug. This way all the strands get compressed by the terminal screw. The coil you see is made from a spare strand of the conductor, 1 less piece for the scrapman.
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Makes sense but not necessary if the lug is rated for the size of conductor used. If within the range of the lug but on the lower end, it may not follow the listing instructions?
 
jaggedben said:
See attachment for what my question is about. (Picture was taken by one of my guys, I didn't see it in person.)

What is that? Is it a product? Or something done with bare wire by the electrician? What would be the reason for it?
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Looks like logitudinal copper tape shield from MV cable. Can't imagine why they would have put it on there. If that is the case, it certainly seems inappropriate.
 
jimbo123 said:
Does anyone think the lugs are to close to the metal backing ? Now that would be unsafe.
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If look closely at that "Zinsco II" panel there is a insulator between the lugs & the sheet metal, and in regards to the Zinsco comment, the BR line did use Zinsco mains for a number of years so think it's fitting. :lol:
 
Interesting followups...

The conductors are copper, and AFAIK the lugs are dual rated.
I'm about 99% it's not MV cable.
(It's not a Zinsco panel.)

Turns out that it was indeed permitted and inspected, a little bit to my surprise.
 
jaggedben said:
Interesting followups...

The conductors are copper, and AFAIK the lugs are dual rated.
I'm about 99% it's not MV cable.
(It's not a Zinsco panel.)

Turns out that it was indeed permitted and inspected, a little bit to my surprise.
Click to expand...
I'm positive it is not MV cable. I just thought they may have used some copper shield taken from MV cable and wrapped it around the end of the LV cable for some reason.
 
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