Ignore that other review. This is a great set of 4 gauge copper jumper cables.
(Don't worry about me cutting it up, I'm using mine for a slightly different application.) With the same tools and some simple math, we can conclude that this is legitimately a 4 gauge cable.
- First off, these are 28 AWG strands, not 29. It makes a difference. - Second, you need to find the cross-sectional area. This is directly related to the amp capacity of the wire. You can use math, or look it up in a table. I get 0.08 mm^2. - Third, multiply by the number of strands. I counted about 245. It may not be perfect, but missing one or two doesn't change the result much. This is your total cross-sectional area. I get 19.6 mm^2. - Fourth, look up the area on a 4 AWG solid conductor. It's 21.1 mm^2. - Finally, conclude that this cable is close enough to a 4 AWG solid conductor to be considered a 4 AWG cable.
P.S. I never thought I'd ever have to review jumper cables in my life, but that other review...