Signs You Need a Consumer Unit Upgrade
- Old-style rewirable fuses or cartridge fuses
- No RCD (residual current device) protection
- Wooden or non-fire-resistant backing board
- Frequently tripping fuses
- Planning home improvements or extensions
- Adding high-power appliances (EV charger, hot tub)
- Required for EICR compliance
What is RCD Protection?
An RCD (Residual Current Device) is a life-saving device designed to prevent fatal electric shocks. It constantly monitors the electric current flowing through circuits and will switch off the power in a fraction of a second if it detects a fault.
Modern consumer units provide:
- Protection against electric shock
- Reduced risk of electrical fires
- Individual circuit protection with MCBs
- Better fault identification
- Compliance with current regulations
Consumer Unit Types
Dual RCD Consumer Unit
Two RCDs protecting separate groups of circuits. Cost-effective and suitable for most homes.
High Integrity (Split Load)
Main switch with RCBOs for critical circuits. Prevents nuisance tripping affecting the whole house.
Full RCBO Board
Every circuit has its own RCBO. Maximum protection and fault isolation. Ideal for larger properties.
Metal Consumer Units
Since 2016, all new consumer units must be metal or housed in a fire-resistant enclosure.
What's Included?
- Removal of old fuse box
- Installation of new metal consumer unit
- RCD and MCB/RCBO protection
- Testing and certification
- Electrical Installation Certificate
- Notification to Building Control
Frequently Asked Questions
How long does an upgrade take?
Most consumer unit upgrades are completed in one day, typically 4-6 hours.
Will I be without power?
The power will be off for the duration of the work, usually 4-6 hours. We recommend planning accordingly.
Is Building Control notification required?
Yes, consumer unit changes are notifiable work. As a NAPIT registered electrician, we handle this for you.