Switching

Circuitry in an electrical circuit refers to the path that electricity follows to power devices. It includes wires, switches, loads (like lights or outlets), and the power source.

When the circuit is closed (switch ON), electricity flows from the hot wire through the load and returns on the neutral wire, completing the loop. When the circuit is open (switch OFF), the flow of current stops.

Simple explanation:
⚡ Circuitry is how all electrical parts are connected to let current flow safely and do useful work — like lighting a bulb or running a motor.

A single-pole switch is the most common type of light switch used in homes. It controls one fixture or device from one location. It has two brass terminals (for the hot wires) and a ground screw. When you flip the switch ON, it completes the circuit and allows electricity to flow. When you flip it OFF, it breaks the circuit and stops the current.

Simple explanation:
👉 One switch controls one light or device.
Common use: Turning a light on or off from one spot.

A 4-way switch is used when you want to control one light or device from three or more locations. It’s installed between two 3-way switches. It has four terminals that allow the electrical path to switch between different routes, depending on the switch positions.

Simple explanation:
👉 Used with two 3-way switches to control one light from three or more spots.
Common use: Hallways, staircases, or large rooms with multiple entrances.