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What size of wire to use?

What Size of Wire to Use?

What size of wire should be used for AC, Fridge, Microwave, Geyser? These are very common questions for a smart homeowner.

This guide simplifies the selection process, helping you pick the right wire size based on your appliance’s needs, keeping your home safe, your devices efficient, and your energy bills in check.

Why Wire Size Matters?

Choosing the right wire size isn’t just about performance, it’s about long-term safety. Here’s why:

  • Avoid Overheating: A thinner wire for a heavy appliance can heat up quickly, creating a fire risk.

  • Prevent Voltage Drops: Appliances won’t work properly if they don’t get the correct voltage.

  • Improve Longevity: Proper wiring ensures your devices last longer and operate efficiently.

Key Factors to Consider When Selecting Wire Size

  1. Appliance Load: High-wattage appliances like geysers or air conditioners require thicker wires.
  2. Distance from Power Source: Longer runs require slightly larger wires to avoid voltage drop.

Recommended Wire Sizes for Common Household Items

Appliance/Usage

Recommended Wire Size
(sq. mm)

Lighting (Tube light, lamps – entire room)

1.0 – 1.5 sq. mm

Ceiling Fans

1.0 – 1.5 sq. mm

TV, Router/ Small Devices

1.0 – 1.5 sq. mm

Refrigerator

1.5 sq. mm

Microwave, OTG

1.5 – 2.5 sq. mm

Iron

1.5 – 2.5 sq. mm

Washing Machine (Semi, Front Load)

1.5 – 2.5 sq. mm

Air Conditioner (up to 1.5 Ton)

2.5 – 4.0 sq. mm

Air Conditioner (2 Ton and above)

4.0– 6.0 sq. mm

Geyser

4.0 sq. mm

Main Incomer (Home DB)

6.0 – 10.0 sq. mm

Note: These are general guidelines. Always consult a licensed electrician to confirm the ideal wire size for your specific setup.

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Essential Wiring Safety Tips

  • Ensure proper earthing to avoid electrical shocks.
  • Don’t overload circuits, know your total connected load.
  • Consult a qualified electrician for proper and safe installation.

Using the correct wire size ensures smoother power delivery, enhances home safety, and prolongs the life of your appliances.

A Thoughtful Choice goes a long way

Wires may stay hidden, but their impact doesn’t. Choosing the right size and the right quality makes all the difference.

Here’s why many trust Pressfit SFT1 Building Wires:

  • High-Quality Electrolytic Copper: Better conductivity and lower power loss.
  • Flame Retardant PVC Insulation: Safer in case of overheating.
  • Anti-Rodent & Anti-Termite Protection: Longer life and fewer maintenance issues.
  • 100% Bunched Copper: Better flexibility and easy installation.

Make the right choice once, and benefit for years to come.

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