Consumer Unit Replacement in Wakefield

Why Your Consumer Unit Matters

Every circuit in your home or business flows through the consumer unit. It distributes power and — critically — provides the safety mechanisms that protect against electric shock and electrical fires. A board without RCD protection cannot react to dangerous earth faults, which is why modern regulations require dual RCD or RCBO protection on all circuits.

If your property still has an old-style fuse box with rewirable fuses, you're relying on decades-old technology that wasn't designed for today's electrical demands. Knox Power & Data upgrade consumer units across Wakefield for homeowners, landlords, and businesses who need modern, compliant protection.

What Happens During a Replacement

A consumer unit replacement typically takes 4–6 hours. We isolate the existing board, install the new unit, reconnect and label all circuits, upgrade earthing and bonding where needed, and carry out comprehensive testing before restoring power. You receive full NAPIT certification upon completion.

We install units from Hager, Wylex, and BG — trusted brands that meet current regulations. For larger properties or commercial premises, we fit three-phase boards and distribution panels tailored to your requirements. As experienced electricians in Wakefield, we assess whether your existing wiring can support the new board or whether a partial rewire is also advisable.

Landlord Consumer Unit Upgrades

If your rental property has failed an EICR inspection with C1 or C2 observations, a consumer unit replacement is often the primary requirement. We work with landlords and letting agents across Wakefield to deliver fast turnaround on compliance upgrades — from inspection through to remedial work and re-certification. For a typical price breakdown, see our consumer unit replacement cost guide.

RCD vs RCBO — Which Should You Choose?

A modern board uses RCDs (Residual Current Devices) or RCBOs (which combine an MCB and RCD in one) to protect against earth faults. A dual-RCD board groups circuits under two RCDs, which is cheaper but means a fault on any one circuit takes out half the house. A full-RCBO board protects each circuit individually — slightly more expensive, but if a fault trips the kitchen ring main, the lights, fridge and boiler stay on. For most homes we now recommend full-RCBO as the price gap has narrowed significantly.

Signs Your Fuse Board Needs Replacing

• Wooden back board, cast-iron switches, or rewirable ceramic fuses
• No RCD (the test button) anywhere on the board
• Persistent tripping that doesn't trace to a single faulty appliance
• Burn marks, scorching or a buzzing sound from the board
• Painted-over or unlabelled circuits (a sign of historic DIY work)
• Failed EICR with C1 or C2 codes against the board

For a deeper guide, read our blog on signs your fuse board is unsafe.

18th Edition & Surge Protection (SPD)

The current 18th Edition wiring regulations recommend Surge Protection Devices on most domestic installations, particularly where lightning strikes or grid surges could damage expensive electronics (smart TVs, EV chargers, heat pumps, computers, white goods). When we replace your board, we'll quote SPD as standard so you can make an informed decision rather than discovering later that it should have been included.

Three-Phase & Commercial Distribution Boards

For commercial premises, light industrial units, and larger properties on a three-phase supply, we install full distribution boards with appropriate breakers, isolation and labelling. We carry out periodic EICR testing on the same boards to keep your installation compliant under the Health and Safety at Work Act.