Most solar cables come with stranded wires.Ī 4mm solar cable is a 4mm thick cable that contains at least two wires which are enveloped together under one protective cover. Stranded wires have the benefit of being thicker and this makes them more resilient to vibrations and the elements, hence they’re more expensive. Stranded wires are used on solar systems but also have other applications – especially moving vehicles such as cars, trucks, trailers, etc. Stranded wires are the big brother of single wires and “stranded” means that the wire is a connection of different wires which are twisted together to form one core wire. They tend to be a cheaper option compared to stranded wires but they can only be obtained in smaller gauges. Single wires are used for basic electric wiring in the home including solar cables. A single wire or a solid wire serves as a single conductor inside the cable and the wire is usually insulated by a protective layer in order to protect it from the elements. There are two types of wires: single wire and stranded wire. These materials provide reliable connectivity and the ability to transfer electricity from the solar panels to the home. Solar wires are made from a sturdy material such as copper or aluminum. To understand how 4mm solar cables function, we have to break down to the basic components that make up the cable: Wires.Įach wire located inside a 4mm cable works as a conductor and the cable is comprised of multiple such conductors. A 4mm solar cable has multiple small wires inside the cable which are used to transfer electricity between different endpoints in the solar setup. This means that wires are essentially the small components that make up the larger cable. A solar panel is a group of multiple conductors while a wire is only a single conductor. The terms “wire” and “cable” are assumed to be the same by the public, but there is actually a major difference between the two.
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