Case study · GorkyCAD Pro
Electrical project for an apartment in London
A 2-bedroom apartment in London: 40 socket positions, kitchen circuits, lighting scenes, a 7 kW EV charger in the car park and smoke alarm integration.
📊 Project specifications
| Type Apartment | Area 90 m² |
| Phases Single-phase (230 V) | Calculated load 12 kW |
| Groups 20 | Sockets 40 |
| EV charger 7 kW | Design time 3 evenings |
🎯 Task
Design the wiring for a 2-bedroom apartment: 40 socket positions, kitchen circuits, lighting with scenes, EV charger in the car park, smoke alarm integration.
💡 Solution
Kitchen on 3 dedicated circuits (oven, hob, dishwasher). Lighting groups with dimming scenes. RCD 30 mA on socket circuits per BS 7671. EV charger 7 kW with Type B RCD. Sockets with shutters.
- Kitchen on 3 dedicated circuits (oven, hob, dishwasher) with 30% power reserve.
- Lighting groups with dimming scenes and shuttered sockets.
- RCD 30 mA on socket circuits and Type B RCD for the EV charger per BS 7671.
- PDF set (SLD, plans, specification, cable schedule) for the electrician and the building management.
✅ Result
The project is ready for the electrician and the building management: SLD, plans, specification, cable schedule. Compliant with BS 7671 (18th Edition).
FAQ
Which wiring rules apply in London?
Apartments in the UK are wired per BS 7671 (18th Edition): RCD protection on socket circuits, shuttered sockets and correct circuit separation — GorkyCAD Pro checks all of this automatically.
Can I add an EV charger in the car park?
Yes: a 7 kW charger goes on a dedicated circuit with a Type B RCD, and the load calculation confirms the existing supply can take it.
Can I design without experience?
Yes, GorkyCAD Pro calculates loads, cables and breakers automatically per regulations.
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Frequently asked questions
Yes, all articles and calculators are completely free.
The site offers 21 free calculators: cable sizing, breakers, RCD, voltage drop and more.
In GorkyCAD Pro: plans, panels, calculations and a PDF set for free.
Write to hello@gorkycad.pro — specialists will review and correct it.