Question

which is the purpose of control wiring​

Answer 1

Answer:

Explanation:

Control wiring, as its name implies, has as its main purpose transmitting electricity used for control purposes. Control wiring carries low levels of current, because not much current is required for control purposes such as energizing a small coil relay or feeding into a PLC input card. Control wiring is not necessarily lower voltage, although most modern systems use 24 volts DC or something similar or some form of low voltage data signaling.

Industrial control wiring used to be almost all 120 volts AC (in the US) and there were many 220 volt AC control systems around. These have disappeared to a large degree because of safety concerns and for ease of maintenance.

Because control wiring carries small amounts of current, the wire gauge of its conductors can be small, and the insulation needs to be adequate for the voltage level of the control signal.