How big is the wire of household electricity?

At present, the common wire specifications on the market are divided into 1.5 mm2, 2.5 mm2, 4 mm2, 6 mm2 and 10 mm2 according to the size of the wire section. The larger the general specification, the higher the current and voltage it can withstand.

1.5 mm2 conductor is suitable for places with low electric power such as lighting lamps;

There are circuit branches in the switch socket, which is suitable for using 2.5 square mm conductor;

Air conditioners, refrigerators, water heaters and other high-power electrical appliances. The main power of the circuit is relatively large, and it is best to use wires of more than 4 square millimeters;

Lines with large carrying capacity, such as trunk lines or central air-conditioning lines, are generally too thin to bear, so it is best to use wires with a diameter of more than 6 square millimeters.