PERMOHONAN METER TNB – LULUS DULU BARU BAYAR - KONTRAKTOR ELEKTRIK BERDAFTAR - 0139214322
**Suitable Electrical Cable Sizes (A Simple & Safe Guide)**
Learn the correct electrical cable sizes based on residential and commercial usage to ensure safety, optimal performance, and a longer lifespan for your electrical system.
3/8/20221 min read
Cable Size by Usage
Usage | Recommended Cable Size
Lighting | 1.5 mm²
Power Socket | 2.5 mm²
Air Conditioner 1.0 – 1.5 HP | 2.5 – 4.0 mm²
Air Conditioner 2.0 – 2.5 HP | 4.0 – 6.0 mm²
Water Heater | 4.0 mm²
Electric Cooker / Oven | 6.0 mm²
Main House Cable | 6.0 – 10.0 mm²
Why Is the Correct Cable Size Important?
✔️ Prevent cable overheating & fire
✔️ Reduce the risk of short circuits
✔️ Protect electrical appliances
✔️ Ensure proper operation of MCB & RCCB
Signs of Incorrect Cable Size
⚠️ Hot sockets
⚠️ MCB trips frequently
⚠️ Burning smell
⚠️ Melted or discolored wires
If these signs occur, immediate inspection is required.
Professional Advice
Every home and premises has different electrical load requirements. Determining the correct cable size should be done by a registered electrical contractor to avoid future safety issues.
🔧 Need Electrical Service Assistance?
We provide:
Wiring inspection & upgrades
Determination of suitable cable sizes
Safe electrical system installation
Services by TNB-registered electrical contractors
👉 Contact us for consultation
