Electrical supply for a two-bedroom apartment: load calculation, groups, breakers and cable sizes. Single-line diagram.
| Group | Breaker | Cable | Protection |
|---|---|---|---|
| Group 1 — Lighting | 10 A (B) | 3×1.5 mm² | — |
| Group 2 — Room sockets | 16 A (B) | 3×2.5 mm² | RCD 30 mA |
| Group 3 — Kitchen | 16 A (B) | 3×2.5 mm² | RCD 30 mA |
| Group 4 — Washer/dishwasher | 16 A (C) | 3×2.5 mm² | RCD 30 mA (A) |
| Group 5 — Air conditioner | 16 A (C) | 3×2.5 mm² | — |
| Group 6 — Electric hob | 32 A (B) | 3×6 mm² | — |
| Main supply | 50 A (C) | 3×10 mm² | RCD 300 mA |
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Data is for reference. Final design decisions must follow current regulations and a qualified engineer.