Matching the wire size to the appliance keeps circuits cool and safe. This chart gives a starting-point copper conductor size and MCB rating for common household loads on a 230 V single-phase supply. For an exact figure by load and run length, use the wire-size calculator.
| Appliance / circuit | Typical load | Copper wire | MCB |
|---|---|---|---|
| Lighting & fans | ≤ 800 W | 1.0 sq mm | 6 A |
| 5 A socket points | ≤ 1,100 W | 1.5 sq mm | 10 A |
| 15 A power sockets | ≤ 2,900 W | 2.5 sq mm | 16 A |
| Geyser / water heater (2 kW) | 2,000 W | 2.5 sq mm | 16 A |
| Geyser / water heater (3 kW) | 3,000 W | 4 sq mm | 20 A |
| Air-conditioner (1–1.5 ton) | ~1,800 W | 2.5 sq mm | 16 A |
| Air-conditioner (2 ton) | ~2,500 W | 4 sq mm | 20 A |
| Kitchen appliance / microwave | ≤ 3,000 W | 2.5–4 sq mm | 16–20 A |
| Submersible pump (1 HP) | ~1,100 W | 2.5 sq mm | 16 A |
| EV home charger (3.3 kW) | 3,300 W | 4 sq mm | 20 A |
| EV home charger (7.4 kW) | 7,400 W | 6 sq mm | 40 A |
Size up for long runs, high ambient temperature or bunched cables. Browse matching APAR house wires.
Guidance only. Figures follow common Indian domestic practice (IS 732 / IS 694), assume copper conductors unless stated, and depend on run length, grouping, ambient temperature and installation. Always have the final design confirmed by a licensed electrician.
Choose the wire grade after checking the size
The chart helps with conductor sizing. Select the insulation grade separately for your project, then check the chosen product’s published ratings and brochure.
- APAR Shakti FR-PVC: flame-retardant PVC house wire.
- APAR Shakti FR-LSH: flame-retardant, low-smoke, low-halogen house wire.
- APAR Anushakti HR-FR-PVC: heat-resistant, flame-retardant house wire.
- APAR Anushakti HR-FR-LSH: heat-resistant, flame-retardant, low-smoke, low-halogen house wire.
- APAR Green Wire: house wire with lead-free HR-FR-LSH PVC insulation.
- APAR Anushakti Fire Protekt: house wire with halogen-free, flame-retardant HFFR insulation.