So if you are just getting into electronics you will certainly need some wire to complete your projects. What type of wire do you need? Well that depends on what type of projects you are going to work on. However for general purpose low voltage DC circuits you can probable get by with just a few spools of wire. Generally speaking you will need a couple spools of solid core wire and a couple spools of stranded core wire. I usually recommend 20 to 22 gauge wire for small DC circuits. 22 Gauge solid core wire works great for jumper wires on a standard bread board. So what is the major difference between solid core and stranded core wire you ask? Well for low voltage DC circuits the only major difference is in the physical characteristics of the wire. Solid core wire is rigid and will usually retain the shape you give it. Stranded core wire is flexible and will not retain it’s shape but will allow your project to flex with out breaking. You will need a few different colors of stranded and solid core wire. I recommend that you pick up red and black to start with as those are generally standard colors for DC circuits. When you get into AC circuits you will start to experience the skin effect where at higher frequency’s the current travels mainly on the surface of the wire and thus you can drive more current though stranded core wire because the surface area is cumulative. That being said you will not experience that when working with small DIY DC electronics projects.
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