Replacing an Old Wylex Fuse Board With RCBOs and SPD Protection
This installation example shows an older Wylex fuse board replaced with a modern consumer unit using individual RCBO protection and a surge protection device.
Upgrade Summary
- Old Wylex fuse board replaced
- Individual RCBO protection installed
- Surge Protection Device fitted
- Improved circuit separation
- Reduced nuisance tripping risk
- Modern metal enclosure installed
Before and After
Before
After
Why the Upgrade Was Needed
Older fuse boards may still operate, but they often lack the level of protection now expected in modern domestic electrical installations. Upgrading the consumer unit can improve safety, reduce nuisance tripping and make future fault finding easier.
- Older fuse board technology
- Limited circuit separation
- No surge protection
- Improved protection required for modern circuits
- Better fault identification needed
What Was Installed
RCBO Protection
Each circuit was protected by its own RCBO, combining overload, short-circuit and residual current protection in one device.
Surge Protection Device
An SPD was installed to help protect connected equipment from transient overvoltages.
Old Vs New
| Old Installation | New Installation |
| Old Wylex fuse board | Modern metal consumer unit |
| Rewireable fuse protection | Individual RCBO protection |
| No surge protection | SPD installed |
| Limited circuit separation | Improved fault isolation |
| Older setup | Easier future maintenance |
Benefits of the Upgrade
- Improved electrical safety
- Reduced nuisance tripping
- Easier fault finding
- Modern circuit protection
- Surge protection for sensitive equipment
- Cleaner and more organised installation
Need a Consumer Unit Upgrade Quote?
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Related Guides
RCD Vs RCBO
Understand the differences between RCBO and RCD protection in consumer units.
SPD Guide
Discover what an SPD is and why you might need one inside the consumer unit.