Three-Phase Electrician London — Commercial 3-Phase Installations & Repairs
Restaurant kitchens, dry cleaners, machine shops, MOT bays, server rooms, EV chargers, induction commercial cookers — three-phase supply work needs an electrician with specific commercial experience. F & A Electrical is NICEIC-approved for three-phase domestic and commercial installations across London. Call 07407 627542 or 07500 721453.
Three-phase pricing — London 2026
| Job | Price (inc VAT) |
|---|---|
| 3-phase EICR / Periodic (small commercial) | £280–£600 |
| 3-phase EICR (medium / multi-board) | £600–£1,200 |
| 3-phase consumer unit / distribution board install | £1,400–£3,500 |
| 3-phase consumer unit replacement | £1,200–£2,800 |
| 3-phase commercial cooker/induction supply | £400–£900 |
| 3-phase 22 kW EV charger | £1,950–£3,500 |
| 3-phase machine supply (lathe/CNC/compressor) | £500–£1,800 per machine |
| 3-phase emergency callout | £90 + VAT per half-hour |
Includes NICEIC certification, Part P notification where domestic, Schedule of Inspections + Test Results, 6 years’ NICEIC warranty.
Where you’ll typically need 3-phase
- Restaurants/commercial kitchens — induction hobs, electric ovens, walk-in fridges, dishwashers (Soho, Shoreditch, Brick Lane, Brixton)
- Dry cleaners — dryers and steam presses
- Garages and MOT bays — lifts, compressors, welding
- Machine workshops and CNC — Park Royal, Tottenham Hale
- Server rooms — UPS, redundant supplies
- EV charging 22 kW+&u fleet
- Heat pumps and large HVAC
- Lifts and access control
What’s different about 3-phase work
- Balanced loading — design across L1/L2/L3 matters
- Higher fault levels — PSCC 16-25 kA
- Phase rotation — reverse rotation damages motors
- Bigger conductors — 16mm², 25mm² SWA
- UKPN DNO coordination — we handle
- Specialist test equipment — phase sequence tester
What’s included
- Site survey, UKPN supply check, load calculation
- DNO notification and coordination
- 3-phase distribution board
- SWA/MICC cable sized to load + diversity
- Type A/B RCDs (EV/inverters)
- Isolators at fixed equipment
- Phase rotation check
- NICEIC certification
- 6 years’ NICEIC warranty
3-phase EICRs — commercial periodic
5-year EICR cycle (sooner if report specifies). We test: distribution board + phase sequence, main earth + bonding, insulation resistance L1-L2-L3-N-E, Zs at EB and fixed equipment, RCD trip times, cable condition + glands + terminations. Issued: NICEIC EICR with Schedule of Inspections + Test Results.
FAQ
3-phase or single? 4 thick conductors + earth = 3-phase. 2 thick + earth = single. Photo of meter confirms.
Upgrade single to 3-phase? Yes — UKPN coordinated. £400–£5,000+ DNO + our install.
3phase EV? Yes — 22 kW chargers.
Commission kitchen equipment? Yes — regular fit-out partners.
Emergency 3-phase callout? 1-2 hours most of London.
Book a 3-phase electrician
Call 07407 627542 or 07500 721453. Send address, equipment type, photo of distribution board. Fixed quote within the hour.
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