The ampacity of a conductor is the maximum current it can carry continuously, under the conditions of use, without exceeding its temperature rating [Article 100 ...

Article 310 provides the general requirements for conductors, except those that are an integral part of equipment or are part of flexible cords or fixture wires. The most prominent feature of Art. 310 ...

There are two main considerations for sizing DC wiring from the output of a power supply to its load. They are ampacity (fancy term for the number of Amps) and voltage-drop (remember ohms law: V = I x ...