Some reviews seem to disambiguate this but are they truly spools of solid single-conductor copper wire?
1839952
No unfortunately, they are not purely copper. I believe it is an alloy. The wire appears silver in color, thus cannot be a single conductor made of copper.
1839953
Yes, this is copper hook-up wire. That means the wire is tinned - solid copper with a thin outer layer of tin, before the outer layer of insulation. It is not a copper alloy as Phillip stated.
2227057
THERE IS NO COPPER IN THESE WIRES, not sure what it is. See my review below.
350914
These cables are made of copper-coated aluminum wire. No question about it. What is worse, I think, is that the crimps in the clamp handles have no strain reliefs. Since aluminum does not handle repeated flexing, I would expect to see eventual failures at the crimps. I have no doubt this product will perform well with limited use, but I would not buy it if you expect to use it frequently.
2153239
According to AntaresPro.com, these are copper clad aluminum; other sites turn up in google search saying it is a hybrid metal to optimize conductivity--meaning evasive wording to avoid saying copper clad aluminum. If I knew for sure this was copper wire, I'd buy it, wish it was. Confusing information here at Amazon.com, including customer care info which appears to be wrong--truth or consequences? Advance auto rep says copper wire too on the online answer, but I think true copper wire would be heavier in pounds weight than this is.
761444
There is no doubt in my mind that it is copper. I've worked with copper wires all my life and I know it when I see it. You can purchase it with confidence.
1002467
Yes, that is the model I have. The spools do unwind when you install them. My current one had to be untangled several times before it got into a rhythm. They work so I am about to order again.
1021760
The pic is different than the spool I received. "Mine says LEAD FREE SOLDER WIRE Size Sn99.3 Cu0.7 Dia 1.0mm", and the spool is green.
216435
Each of the 8 wires is solid: copper clad aluminum in plastic insulation. The there are 4 pairs of wire, with each pair being twisted together (standard CAT5e cable)
1558866
No its not. The casing is really thick but even it is not full 0 gauge. Its decent wire though. So far so good
1589536
I just checked mine that I purchased here from Cable-mix and fulfilled by Amazon. I thought originally it was solid copper, but after scraping the cable with a razor there was a silver color underneath the copper. I've used this to install six IP cameras that have power over Ethernet and have not had any issues..Hope this helps, Jay & ChrisP.S. I agree with the guy that said it is difficult to tell because it is a very heavy or thick coating of copper.:-)
2200389
It has one solid wire. I've been using it on a breadboard and it works great.
1617499
The CCA makes it to where this is aluminum wire stranded that is wrapped in copper. It's a lot thicker but cheaper than the same load of wire made of solid or stranded copper. it's also quite flexible. It says it's Rated for 250A load @ 20' so you need to decide on the load you're trying to pull with this wire and the run of it as well.
1371661
I believe they are. I cut some off and looked very carefully. It does look like copper.
1577562
When I purchased this wire, I read a lot of reviews, and some of these reviews contained claims that the wire was copper plated aluminum. I got this wire from SatMaximum. They claimed it to be copper in the ad, but I see that they must have started over with the ad, because there are only 3 reviews on this new ad, which makes no claim either way on its composition. Overall I am happy with the product, although it does appear to have a silvery core, which may be aluminum...
2153241
I got this from Advance Auto site so I can't verify it for accuracy..... Q: Solid copper wire or copper clad aluminum wire? Asked on 9/21/2014 by Nick from United States Know the answer? Answer this question 1 answer CUSTOMER CARE A: Hi Nick, happy to assist you! They are solid copper wires. Answered on 9/23/2014 by Solomon
2153238
The clamp s are covered so I can't see the wire but the weight seems consistent with solid copper. Also comes in a big plastic carrying case. These are really heavy cables like I wanted.
539372
While I did not cut it open to verify, I am sure this is NOT copper. If it was, the manufacturers would have stated that fact somewhere on the label and description. They do not state the type of metal used for the wires anywhere. Many use copper coated aluminum wire.