If you’ve ever done any wiring on a boat, whether you’re in the electrical trade or just a casual boater, this is a legitimate question. After all, stripping marine battery wire will expose some silvery filaments that do, after all, look silver. So are they? Let’s look at what qualifies marine battery wire and the reasons it is designed and manufactured according to those qualifications. So What Is It Made of? First things first, marine battery cable is actually not silver, although it looks like it. Ironically, silver is an excellent electrical conductor, among the best known. However, silver, like copper (which is used for most electrical conductors, including marine cable as you are about to see) suffers from a common deficiency. Both are prone to oxidation - that is, both silver and copper corrode. As you might know, these effects are broadly exacerbated in humid and saltwater environments - both of which ships and boats are prone to encounter. To answer the question initial