General > General Technical Chat

-rant- chinesium wires

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DavidAlfa:
Not another thread with the same thing.
100 wires for $3!  - Damn, they're bad!
Yes!
Last ones worked only for 1 insertion.
Disassemble, bent the contacts again, good for 2 more insertions.
The males broke upon inserting, they were just too weak.
But at least they could be soldered :-DD.

SL4P:
I know this is extreme, but I avoid buying anything new from China.
If a specific product seems to address a problem,
i’ll look for a recent second hand unit nearby.
Thus only one cash payment is sent to China, and e-waste is reduced.

hans:

--- Quote from: Zoli on September 10, 2023, 11:47:52 pm ---It's called "Copper-Clad Aluminum Wire"; once you've burnt down the copper, is useless.
Here's an US made: https://www.rfsworld.com/pim/product/html/LCF12-50J (core conductor).

--- End quote ---

Or even as-is, it can be useless. CCA is very popular in cheap ethernet installation cable nowadays. Always look out for "CCA". No datasheet? Don't buy.
And once you get it.. strip the wire, put an exactoknife into a wirestrand (hopefully solid wire), and double-check if its copper all around (and inside).

I've read horror stories where people bought "Cat6e" cables for 10Gbit networking that turned out to be CCA. Couldn't even reach 1Gbit at a couple of meters. Let alone 10Gbit @ 100m as of spec. *coughs*, what is a spec worth anyhow..

IT shops are absolutely filled with CCA cables. I ended up getting Cat7 cable the other day, because after skipping all the CCA crap, it was cheaper than all the other Cat6e offerings a local shop had.. :-//

Smokey:
During the 60s and 70s in the USA they were using aluminum wire for some home electrical installs.  There are all sorts of issues with installation and terminating that causes it to not meet modern code.  But there are still tons of houses out there from that time with AL wires in the walls.

I guess there is a "new formulation" that actually does meets code, but still sounds sketchy: https://www.copperweld.com/buildingwire

TimFox:
I once purchased "high-temperature" industrial wire from a surplus dealer, only to find out it was nickel or nickel-plated and hard to solder.

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