
Summary: Use them to extend the solar panel for optimal placement. Observations: The silicone case is soft and breaks easily. Generally, with the previous two wires I used, you can separate the wires by pulling them apart, but doing so with this one will break the sheath. You need to use a very sharp knife and CAREFULLY cut out the center. I added a piece of shrink tubing to also prevent it from splitting further. Recommendations: When it comes to cables, here are a few considerations: 1) The thicker the wire (lower AWG number), the lower the resistance and the more efficient; 2) the disadvantage of thicker cables is that they are heavier and sometimes less flexible; 3) Higher voltage will cause insulation breakdown (they are rated for 600VDC). Pros: Decent fit and finish. Disadvantages: cost; odd 20+20 feet Description; The silicone case breaks quite easily. Bottom Line: At $34 for a 2-conductor (20 ft) cable, that's $1.70/ft (or $0.85/ft) per conductor, so three stars.