One of the most important things about your 3D Printer is the Wiring. If the gauge is too small you won’t get enough current to your parts and can even have a disaster on your hands. Too large of a gauge and you might have a problem fitting those crimped terminals into the connectors. So, the first thing to look for in a wire type is a suitable wire.The reason being your printer will create thousands of cycled movements and if your wire is a solid it will be susceptible to break over the duration of repeated abuse. The stranded wire allows for the cable to flex and move without breaking over time.