Heavy-duty power solutions for industry. We design, install, and maintain 400V three-phase systems for factories, warehouses, and commercial premises.
While homes run on a single-phase supply, the industrial heart of Norfolk runs on Three Phase. Whether you are powering heavy production machinery, large HVAC systems, or a fleet of commercial EV chargers, you need an electrical partner who understands the complexities of high-voltage distribution.
At Yare Electrical, our NICEIC-approved contractors are specialists in three-phase engineering. From new supply installations to load balancing and fault finding, we keep your business powered safely.
Need More Power?
Our Three Phase Capabilities
Working with 400V systems requires higher qualifications and strict adherence to safety protocols. We provide:
1. Distribution Board Installation
The distribution board (TP&N) is the hub of your power. We install high-capacity commercial distribution boards from trusted brands like Schneider and Hager. We ensure your board has the correct “Type” of breakers (Type C or D) to handle the high inrush currents typical of industrial motors without nuisance tripping.
2. Machinery Wiring & Connections
You can’t just plug a lathe into a wall socket. We provide hard-wiring services for fixed industrial plant equipment, including:
- CNC Machines and Workshop Equipment.
- Industrial Refrigeration and HVAC units.
- Commercial Kitchen induction suites.
- Rotary Isolator installation for safe local maintenance.
3. Load Balancing
Is your power tripping efficiently? If your electrical load is not evenly split across the three phases (L1, L2, L3), you risk overloading one phase while the others sit idle. This causes inefficiency and can trip your main supply fuse.
We conduct Load Monitoring Surveys to analyse your usage and redistribute your circuits, ensuring your system runs cool and balanced.
Sub-Main & Cable Installation
Need power in a new part of your building? We calculate and install Steel Wire Armoured (SWA) sub-main cables to feed new distribution boards or outbuildings. Our design process accounts for voltage drop over long cable runs, ensuring that your machinery at the far end of the factory receives the correct voltage to operate without damage.
Inspection & Testing (EICR)
Industrial environments are harsh. Vibration, dust, and heat can loosen connections over time. We provide rigorous EICR Testing for industrial premises, identifying loose connections, overheating cables, or phase imbalances before they cause a critical failure.
Why Choose Yare Electrical?
- Qualified Engineers: Our team is trained in the specific dangers of 400V working.
- Fast Response: If a phase goes down (“Single Phasing”), it can burn out motors instantly. Our emergency electricians respond fast to diagnose the fault.
- Turnkey Solutions: From the incoming supply to the final machine connection, we handle it all.
Power Your Production
For expert advice on your industrial power supply, contact the three-phase specialists at Yare Electrical on 01603 626400.