How distribution boxes work

Electricity enters the distribution box (also called a distribution board or panel) from a main service entrance cable connected to the building's primary power source.

Inside the box, the main incoming power is channeled and distributed to several individual circuits.

Each circuit is routed to a specific area or set of appliances in the building, such as lights, outlets, or machinery.

Each circuit has a protective device, typically a circuit breaker or a fuse.

These devices continuously monitor the electrical current for that circuit.

If a circuit draws too much power (an overload) or a fault causes a sudden surge in current (a short circuit), the circuit breaker or fuse detects the dangerous condition.

The device will then "trip" or "blow," automatically disconnecting the power supply to that specific circuit.

This automatic shutdown prevents the wires from overheating and causing a fire, protecting the wiring and connected devices.

When a circuit breaker trips, a user can manually reset it by flipping the switch back on.

The distribution box serves as the central control point for the electrical system, offering a safe and organized way to manage power distribution throughout the building.

It ensures that electricity is divided properly, preventing damage and keeping the system safe and reliable.