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Re: Old wire question [Re: sparkyinak] #208824 02/14/13 10:32 AM
Joined: Apr 2002
Posts: 7,209
HotLine1 Offline
The jacket was silver colored. It used to flake off when you touched or worked with it in a panel change, or service upgrade.

Work Gear for Electricians and the Trades
Re: Old wire question [Re: sparkyinak] #208831 02/14/13 08:24 PM
Joined: Apr 2004
Posts: 810
Theelectrikid Offline
It's a shame I didn't grab one of the nicer pieces of wire from a crawl space we just did down in OCNJ post-Sandy, it was still reasonably intact enough to read the jacket and fur the description.

Whenever it gets wet it falls right apart, no t-strippers needed!

Is there anyone on board who knows how to fly a plane?
Re: Old wire question [Re: sparkyinak] #208845 02/14/13 11:05 PM
Joined: Jun 2004
Posts: 1,273
Tesla Offline

I was referring directly to the conductor itself being tinned/silvered -- not the insulation or sheathing jacket.


It's not enough that they know how to fly a plane...

The question is, "Did they have fish for diner?"

Last edited by Tesla; 02/14/13 11:13 PM.

Re: Old wire question [Re: sparkyinak] #208846 02/14/13 11:19 PM
Joined: Jul 2004
Posts: 9,526
gfretwell Online Content
I have seen tinned wire Romex but it was real old stuff. Maybe from the solder pot days.

Greg Fretwell
Re: Old wire question [Re: sparkyinak] #208847 02/15/13 10:29 AM
Joined: Feb 2002
Posts: 2,233
harold endean Offline
Boy, I used to work with a lot of that old stuff around here. The towns I worked in were 100-200 years old. There was a lot of K&T, old RX, old BX, etc. I even sent some photos of some of the old crow foot boxes, rosettes, etc. They are posted over in the nostalgia picture forum.

Re: Old wire question [Re: sparkyinak] #208857 02/15/13 09:00 PM
Joined: Apr 2003
Posts: 362
Obsaleet Offline
I think that is type NM cable. It has TW inside. Late 50's early 60's I think it had no ground. Then mid to late 60's it had a #16 ground. I have worked in some places that were wired with both and they just put the ground in the back of the box, because some had grounds and some didn't.


Choose your customers, don't let them choose you.
Re: Old wire question [Re: sparkyinak] #208859 02/16/13 03:05 AM
Joined: Feb 2004
Posts: 1,432
Lostazhell Offline
The house I grew up in had the kinda green-silverish woven jacket over TW with a 16 ground.. It was Paranite Parasyn. The all silver kind was Anaconda Densheath or Hatfield Hatvenol if I remember right. For some reason I think Circle wire had a version as well.

Re: Old wire question [Re: sparkyinak] #208860 02/16/13 01:23 PM
Joined: Feb 2002
Posts: 2,233
harold endean Offline

Those ground wires tied to the back of the box were the worst thing to work with. If you didn't know how that was wired, you would loosen the nut on the inside of the box and then you were screwed, because you couldn't tighten it back up. Nor could you attach a new ground wire to it. I used to tell all me helpers, if you don't see the ground wire inside of the box, check for a bolt/nut on the bottom of the box. Then check for proper grounding of the box. More than likely, the box was properly grounded on the outside back of the box. Then we would have to use a ground clip to ground the new wire to the same box.

Re: Old wire question [Re: sparkyinak] #208874 02/16/13 09:14 PM
Joined: May 2003
Posts: 1,155
dougwells Offline
I cant remember where I saw it but apparently for the tinned conductor was used because of a chemical compound in the insulation that would react with copper. Sulfur comes to mind

Re: Old wire question [Re: sparkyinak] #208875 02/16/13 10:26 PM
Joined: Jun 2004
Posts: 1,273
Tesla Offline
Tinning is particularly desirable if you're intending to solder a connection.

Tinning is still seen on switchboard bussing.

You can still purchase silver plating in solution for direct application to hot spots on high power bussing. It's very pricy.

For absolute corrosion resistance gold is used.

The reason it's used as burial money is because it, alone, can take it for centuries without degradation.

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