The exact quantity depends on your floor plan, number of points and wiring layout, but this table gives a rough starting estimate for planning and budgeting a typical Indian home. Wire is usually sold in 90-metre coils.
| Home | 1.5 sq mm (lighting) | 2.5 sq mm (power/sockets) | 4 sq mm (AC/geyser) |
|---|---|---|---|
| 1 BHK | ~2 coils | ~2 coils | ~1 coil |
| 2 BHK | ~3 coils | ~3 coils | ~1–2 coils |
| 3 BHK | ~4–5 coils | ~4–5 coils | ~2 coils |
Always add a margin for wastage and future points, and let your electrician confirm the final bill of quantities from the actual wiring diagram.