Replacement of a corroded outdoor consumer unit with a new IP65-rated installation housed within a protective meter box enclosure in Camborne, including upgraded RCBO protection and full certification.
Weather exposure causes significant deterioration to outdoor electrical equipment over time. This Camborne property required attention when the existing consumer unit began showing signs of corrosion on several circuit breakers. The corroded components presented a safety concern that needed addressing promptly, particularly given the unit’s exposed location.
The original installation featured standard IP-rated protection, which had proven insufficient against the elements. Cornwall’s coastal climate subjects outdoor electrical equipment to moisture, salt air, and temperature fluctuations that gradually compromise even supposedly weather-resistant installations. The corrosion found on the existing switchgear demonstrated this vulnerability clearly.
Upgrading to IP65-rated equipment provided a solution that addresses these environmental challenges more effectively. The IP65 rating offers substantially better protection against dust ingress and water jets from any direction, making it far more suitable for exposed outdoor locations. This level of protection proves particularly valuable in coastal areas where salt-laden moisture accelerates corrosion on electrical components.
Housing the new consumer unit within a meter box-style enclosure added an extra layer of protection beyond the unit’s own IP rating. This dual-protection approach creates a robust installation that can withstand prolonged exposure to harsh weather conditions. The enclosure shields the unit from direct rainfall, wind-driven moisture, and other environmental factors that would otherwise directly contact the switchgear.
The installation required complete replacement of all circuit protection devices. New RCBO protection was fitted throughout, providing both overcurrent and earth leakage protection for each circuit. This type of protection offers significant advantages over older MCB and RCD combinations, as each circuit gains independent fault protection without affecting other circuits during a trip event.
A bi-directional RCBO was installed specifically for the sub-main circuit feeding the property’s solar equipment. This specialised device accommodates the unique requirements of solar installations where current can flow in either direction depending on whether the system is importing or exporting power. Standard protective devices aren’t designed to handle this bidirectional current flow safely, making the correct specification of protection devices absolutely necessary for solar-connected circuits.
The meter box enclosure was mounted securely to provide stable support for the electrical equipment while maintaining accessibility for future maintenance work. Cable entries were sealed properly using appropriate glands to prevent moisture ingress where conductors enter the enclosure. The installation used armoured cable glands for the incoming supply and outgoing circuits, with flexible conduit used where additional mechanical protection was needed.
All work was carried out in accordance with current wiring regulations, with particular attention paid to the requirements for outdoor installations. The environment classification, IP rating requirements, cable selection, and protective device ratings all needed careful consideration to create a compliant and safe installation. Testing procedures followed the prescribed sequence, verifying insulation resistance, earth fault loop impedance, RCD operation, and all other relevant parameters before energising the circuits.
Full electrical certification was issued upon completion, documenting the installation details, test results, and confirming compliance with BS 7671 requirements. This certification provides the property owner with verified proof that their electrical installation meets current safety standards and has been installed by competent persons following the correct procedures.
The completed installation delivers reliable weather-resistant electrical protection that will resist corrosion far better than the previous equipment. The combination of IP65-rated switchgear and protective enclosure creates a robust outdoor installation capable of providing many years of trouble-free service despite exposure to challenging coastal conditions. Proper specification and installation of outdoor electrical equipment makes a substantial difference to long-term reliability and safety.
