Stranded wire is often the better choice for control panels. Voltage ratings need to match or exceed what is present. There are many right and wrong ways to wire an industrial control panel according to NEC (National Electric Code) standards. Sure, the specs of the wire itself matter (and we'll cover them below), but layout and safety planning are arguably even more important. Let's. OEMs rely on control panels to manage power, signal flow, and system automation across their equipment. Wiring brings structure to that system. Proper wiring ensures accurate signal transmission, reduces electrical noise, simplifies troubleshooting, and improves long-term maintainability. Designing. * Wire: Use all 600V 90 Deg C rated wire.