Construction of current protections

Safe, durable protection for electrical currents

Current protection is the foundation of a reliable electrical installation. When circuits are correctly protected, your property is safer, equipment lasts longer, and unexpected shutdowns are reduced. We design and install protection systems that match the real load of your building, meet applicable standards, and provide clear selectivity so only the affected circuit disconnects during a fault.

Whether you are fitting out a new space or improving an older board, we assess risks such as overload, short circuit, earth leakage, and surge events. From selecting the right protective devices to labeling, testing, and documentation, our work is planned to keep people protected and operations running smoothly.

What current protection covers

Effective protection is more than placing a breaker in a panel. It is a coordinated set of devices, settings, and wiring practices that ensure faults are cleared quickly and safely. We work across residential, commercial, and light industrial environments, tailoring solutions to your supply type, circuit design, and usage patterns.

Protection types we install

• Overcurrent protection using correctly rated MCBs or MCCBs to prevent cable overheating and fire risk.
• Residual current protection with RCDs and RCBOs to reduce shock hazards and detect earth faults.
• Surge protection using SPDs to help protect sensitive electronics from voltage spikes.
• Fault isolation and selectivity so a single issue trips only the relevant circuit, not the entire site.

If you also need broader electrical support, our team can integrate these upgrades as part of complete electrical installation services, ensuring protection devices align with cable sizing, earthing, and distribution layouts.

Our process from assessment to certification

We begin with a practical review of your existing installation and how the building is used. For new projects, we coordinate with your plans and load schedule. For existing boards, we check the condition of enclosures, busbars, neutral and earth bars, and the suitability of current protective devices for the connected circuits.

Step by step approach

1. Site survey and load assessment including expected demand, motor starting currents, and any high inrush equipment.
2. Device selection choosing appropriate ratings, breaking capacity, and trip characteristics for each circuit.
3. Coordination verifying discrimination between upstream and downstream protection to minimise downtime.
4. Installation and board organisation neat routing, secure terminations, correct torque, and clear circuit labeling.
5. Testing and verification insulation resistance, continuity, RCD trip times, loop impedance, and functional checks.
6. Handover providing test results, device schedules, and guidance on what to do if a device trips.

When faults are already occurring, we can combine protection upgrades with targeted electrical troubleshooting to identify the root cause, such as damaged wiring, moisture ingress, or an undersized circuit.

Common problems we solve

Many protection issues come from changes over time. New appliances, added sockets, renovations, and aging components can push a once suitable system beyond its limits. We focus on correcting the underlying mismatch between load, wiring, and protective devices.

• Frequent tripping caused by overloaded circuits, incorrect breaker curves, or nuisance RCD trips.
• Outdated fuse boards that lack modern residual current protection and clear circuit separation.
• Incorrect device ratings where a breaker is too large for the cable, increasing overheating risk.
• Poor selectivity where a minor fault cuts power to multiple areas or the whole property.
• Inadequate surge protection leading to repeated damage of routers, alarms, and control systems.

We also help clients plan upgrades for EV charging, heat pumps, workshops, or kitchen refurbishments, ensuring new loads are protected correctly and integrated safely into the distribution board.

Why professional protection work matters

Current protection is a safety critical part of your electrical system. Incorrect selection or installation can lead to overheating, electric shock risk, and unnecessary outages. Our electricians follow a careful, test based approach and only fit components suited to the installation, environment, and expected fault levels.

As part of wider electrical safety services, we can review earthing and bonding, improve board accessibility and labeling, and recommend practical changes that reduce risk without overcomplicating the system.

If you want dependable power, fewer disruptions, and safer circuits, we are ready to design and install current protections that fit your building and the way you use it.