Copper wire

Non Mog stuff

Copper wire

Postby Sleeper » Sun Jan 12, 2020 2:06 pm

Dear All

Any budding electrical engineers/metallurgists/chemists etc out there? Hope you can help me?

Quite a while ago I bought on a well known auction site some twin , red/black copper wire for general use ,
speakers etc

2020_0112twinredblack0001.JPG


All was well for a while till they went faulty...traced it to the wiring and both wires were faulty , so replaced them...all was well for a while again till....
So , after ripping the wiring out again , had a closer look at the cable and it seemed the copper wire was " disintegrating " for want of a better word , which brings me back to a problem a couple of years ago when I had problems sealing hydraulic fittings , mult-ipacks of various copper O rings were found to be steel , copper plated , so now I carry with me a small magnet....won't be caught out again!!

Back to the copper ? wire , how can one tell if it is copper wire or as suspected copper plated aluminium wire ?

Thanks

John
Sleeper
.
 
Posts: 297
Joined: Wed Nov 09, 2016 7:11 am
Location: Manchester U.K.

Great Britain (GB)

Re: Copper wire

Postby Panky » Sun Jan 12, 2020 3:07 pm

You could check by scraping the wire with a blade then try and solder it, ally wire won't take the solder.
I used to fly model aircraft and a strange phenomena came to light after I crashed one of my models - I lost all control and it just fell from the sky. The negative wire on the battery pack that was in the model had disintegrated, the insulation was fine but the copper core had turned to carbonised dust. I found out later that this was a common problem and was labelled 'negative lead corrosion' I wonder if this is a similar issue you are having for some reason.
Image
User avatar
Panky
.
 
Posts: 1271
Joined: Sun Mar 22, 2015 6:00 pm
Location: Cheshire

United Kingdom (uk) UK England (.g)

Re: Copper wire

Postby dp » Sun Jan 12, 2020 4:00 pm

Already replied on the other site :)
dp
.
 
Posts: 453
Joined: Fri Mar 21, 2008 8:03 pm
Awards: 8
Contributions 2011 (1) Contributions 2012 (1) Contributions 2013 (1) Contributions 2014 (1) Contributions 2015 (1)
Contributions 2017 (1) Contributions 2018 (1) Contributions 2019 (1)


Re: Copper wire

Postby Sleeper » Sun Jan 12, 2020 4:36 pm

Sleeper
.
 
Posts: 297
Joined: Wed Nov 09, 2016 7:11 am
Location: Manchester U.K.

Great Britain (GB)

Re: Copper wire

Postby TDV102 » Sun Jan 12, 2020 6:15 pm

Cat5 UTP network cable is useful for speakers and gives you 8 cores! Unless you use high wattage gear. At 20W per channel its fine.
User avatar
TDV102
.
 
Posts: 185
Joined: Fri Jun 26, 2015 8:53 pm

United Kingdom (uk) UK Yorkshire (eu)

Re: Copper wire

Postby Panky » Sun Jan 12, 2020 6:22 pm

Sleeper wrote:Solution

https://www.youtube.com/watch?v=rL5VUYe_uX8

Thanks
John ;-)


What did you find? is youre CCA?
Image
User avatar
Panky
.
 
Posts: 1271
Joined: Sun Mar 22, 2015 6:00 pm
Location: Cheshire

United Kingdom (uk) UK England (.g)

Re: Copper wire

Postby Sleeper » Sun Jan 12, 2020 8:28 pm

Yet to find out,the only flame I have is a jet type lighter , maybe the flame is too hot ..will buy myself a ciggie lighter shortly.

Have tried scraping the copper coating off but the " filaments" are so fine that it's hard to tell whether it's shiny copper or another material..

John ;-)
Sleeper
.
 
Posts: 297
Joined: Wed Nov 09, 2016 7:11 am
Location: Manchester U.K.

Great Britain (GB)


Return to Off Topic



Who is online

Users browsing this forum: No registered users and 1 guest