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1 mm² copper carries a fan point on a 6 A MCB. In Pakistan the size actually sold for fan and light circuits is 3/.029 — 1.5 mm² — and that is what to buy.
A ceiling fan draws 60–80 W, which is 0.27–0.36 A at 220 V. Current never limits a fan circuit: 1 mm² is rated 10 A clipped direct at 30 °C, more than twenty fans' worth. Voltage drop down a long circuit is what limits it. On a 3.3 V budget it runs out at about six fans on a 30 m circuit, while 1.5 mm² holds ten.
A ceiling fan point in Pakistan is wired in 1.5 mm² copper — the wire the trade sells as 3/.029 — on a 6 A MCB shared with the room's lights. 1 mm² carries the load on paper: a fan is 60–80 W, so 60 ÷ 220 = 0.27 A and 80 ÷ 220 = 0.36 A, against 10 A clipped direct at 30 °C. The reason to take the heavier size instead is distance, not current — and the fact that a Pakistani shop stocks 3/.029 by the coil.
| Point | Typical power | Current at 220 V | Cable | Circuit |
|---|---|---|---|---|
| Ceiling fan | 60–80 W | 0.27–0.36 A | 1.5 mm² (3/.029) | 6 A MCB, shared |
| Exhaust fan | 30–60 W | 0.14–0.27 A | 1.5 mm² (3/.029) | 6 A MCB, shared |
| LED bulb or panel | 5–20 W | 0.02–0.09 A | 1.5 mm² (3/.029) | 6 A MCB, shared |
| 1 mm² capacity | — | 10 A | 44 mV/A/m drop | +4 A on a 6 A MCB |
| 1.5 mm² capacity | — | 19.5 A | 29 mV/A/m drop | +13.5 A on a 6 A MCB |
Charts that say "8 to 10 fans per circuit" rarely say what the limit is. Current is not it: a 6 A MCB divided by 0.36 A a fan is sixteen fans, and the cable clears the breaker either way. Voltage drop is what bites, because a fan and light circuit goes room to room and is the longest circuit in a house. Hold it to 3% of 220 V — 6.6 V — and give the final circuit half of that, 3.3 V, the submain having spent the rest.
| Fans on the circuit | Current | Drop on 1 mm² | Drop on 1.5 mm² |
|---|---|---|---|
| 4 | 1.44 A | 1.90 V | 1.25 V |
| 6 | 2.16 A | 2.85 V | 1.88 V |
| 8 | 2.88 A | 3.80 V | 2.51 V |
| 10 | 3.60 A | 4.75 V | 3.13 V |
| 12 | 4.32 A | 5.70 V | 3.76 V |
Read down the columns against the 3.3 V budget: 1 mm² is spent between six and eight fans, 1.5 mm² between ten and twelve. Adding the room's lights barely moves it, because an LED point is 0.02–0.09 A. That is the honest basis for "eight to ten points on a fan circuit" — a voltage-drop rule wearing a rule-of-thumb coat, and on a short 15 m circuit you can carry more.
This page sizes one point and one circuit, not the coils for a whole house — that needs the point count for your plot, which the 5 marla wiring quantities and 10 marla wiring quantities guides work out. The wire itself is 1.5mm single core copper cable (3/.029) for singles pulled through conduit, or 1.5mm 3 core flexible cable for a sheathed run to the point.
We draw the copper in Lahore and sell it at the day's rate — no dealer margin. Send the point count, the longest run and your city: Punjab in 1–2 days, rest of Pakistan in 2–4.