What is the minimum number of wires required between two Start/Stop push button controls?

In a typical setup involving Start/Stop push button controls for equipment like motors, a minimum of three wires is commonly required. This configuration usually involves one wire for the power supply to the Start button, another wire for returning the signal after the Start button is pressed, and a third wire for the Stop button.

The Start button often requires a wire carrying the voltage that will energize the motor's contactor once activated. When the Start button is pressed, it allows current to flow and engages the contactor, which in turn powers the motor.

The Stop button interrupts this circuit, and thus the wiring configuration needs to account for this interruption. Consequently, the Stop button needs to be connected in such a way that it can break the circuit initiated by the Start button, which is typically done with a separate wire connecting the Stop button back to the circuit.

This arrangement establishes a functional control circuit that allows for both starting and stopping a motor, effectively ensuring proper operation and safety of the system. It's essential to use at least three distinct wires to meet this basic control functionality, thus validating the choice of three as the minimum number required for this setup.