What is a consumer unit
Published
· Volt East Group
A consumer unit, often referred to as a fuse box or distribution board, is a key component in an electrical installation that distributes electricity throughout a building.
It contains various circuit breakers or fuses designed to protect electrical circuits from overloading or short circuits. A typical consumer unit includes:
Circuit Breakers: Individual switches that protect specific electrical circuits (e.g., lighting, sockets, appliances). If there's a fault, they "trip" to break the circuit.
Residual Current Devices (RCDs): Safety devices that detect imbalances in the electrical current and quickly cut the power to prevent electric shocks.
Main Switch: This controls the supply of electricity to the unit and can turn off all electricity in the home.
In essence, it ensures the safe distribution and management of electricity in a property.
When should your consumer unit be checked?
Arrange a professional assessment if the board is old, lacks RCD protection, trips repeatedly or needs to support a major new load such as an EV charger.
Useful next steps:
Read the consumer-unit upgrade guide
Discuss electrical installation and upgrade work
Plan your next project with Volt East
Use our practical guides to prepare the brief, then speak to Volt East about electrical installation, lighting design, security or smart-home work across Romford, Essex and London.