The Impact Of Wire Specifications On The Electrical Performance Of Wall Switches

When the conductor specifications are smaller than required, the resistance on the line will increase, resulting in a larger voltage drop under overload. This may cause the Wall Switch to operate unstably, the lamp to flicker, or even accelerate the oxidation of the contacts. Prolonged use under these conditions may loosen the internal connections of the switch due to thermal cycling, reducing the reliability of the electrical connection.

Conversely, if the conductor gauge is significantly larger than the circuit design requirements, it will not cause structural damage to the wall switch itself, but it increases the difficulty of running it through conduits during construction, and may result in insufficient wiring space within the switch box, thus affecting the installation quality. Furthermore, mixing conductor gauges in the same circuit complicates the selection of protective devices, as the selection of circuit breakers is usually based on the minimum cross-sectional area of ​​the conductor; otherwise, it may violate electrical codes.