Electrical
Safety
Choosing the Right Wire Gauge for Your Home
Nov 05, 2024
Ashish Singh
Using thin wires for heavy appliances is the #1 cause of short circuits in Patna. Let's simplify which wire size you actually need.
Standard Wire Sizes Chart
| Wire Size (sq mm) | Ampacity | Best Use Case |
|---|---|---|
| 0.75 mm² | 6 Amps | LED Bulbs, Fancy Lights, Earth Wire (Internal) |
| 1.5 mm² | 12-14 Amps | Fans, TVs, Laptops, Mobile Chargers |
| 2.5 mm² | 18-20 Amps | Washing Machines, Iron, Kitchen Sockets |
| 4.0 mm² | 25-30 Amps | AC (1.5 Ton), Geysers, Microwaves |
| 6.0 mm² | 35-40 Amps | Main Distribution Board Input (Sub-mains) |
Why Brands Matter?
Local wires often use impure copper (alloy) which has higher resistance and heats up quickly. Always look for ISI Marked wires from reputable brands like Polycab, Havells, or RR. They use 99.9% electrolytic grade copper.
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