Industry News

The Good Wires and Cables Should Be Thick or Thin

Published by admin December 04,2020

Wire Thickness Specification
According to the physical, the larger the diameter of the wire of the same material and length, the smaller the resistance, the more current will pass in the same time; the smaller the diameter, there will be the greater the resistance, and the less current will pass in the same time. We often use wires and cables in daily life are 1 square, 1.5 square, 2.5 square, 4 square, 6 square, and 10 square.

Different square wires have the different current-carrying capacity. The larger the cross-sectional area (thickness), the greater the current-carrying capacity of the wire. According to international standards, most of the wires and cables commonly used in our homes, with different square numbers, correspond to most of the current-carrying capacity as follows:
1 square: current carrying capacity is 6~8A
1.5 square: current carrying capacity is 8~15A
2.5 square: current carrying capacity is 16~25A
4 square: current carrying capacity is 25~32A
6 square: current carrying capacity is 32~40A
10 square: carrying capacity is 40~65A


Does Wire Thickness Affect Power Consumption? The Answer Is Yes.
When buying wires and cables, if we order wires and cables with a small current-carrying capacity, the wires will heat up when connected to electrical appliances with a higher power, which will easily cause leakage and overload, which will burn the electrical appliances or wires and cause circuit damage. So someone thinks since thick wires have lower resistance and higher current, which can prevent electrical appliances from burning out, short circuits, and power outages, why not use thick wires when laying electric wires at home? This works in theory, but it is not practical.

On the other hand, the thicker the wire, mostly, the more expensive. The current size can be obtained by "the power ÷ 220V", that consumers (electricians) choose wires and cables according to the current, and there is no need to order thicker and more expensive wires and cables.

JZD cable is a wire and cable manufacturer with 20 years of production experience, with multiple certificates, such as TUV, CE, SAA, IEC, etc. Our factory has provided wires and cables for more than 1,000 projects worldwide.