Encyclopedia of electric power: knowledge of safe use of electricity

The power supply voltage is 220 volts, do you know? Divide the power of electrical appliances by 220, and you can get the current! Here are some tips for safe use of electricity, so that you can better understand wires and currents.

Allowable range of watt-hour meter

Pay attention to the total current not to exceed the allowable range of electric energy meter when using electricity! For example, 20(60)A marked on the electric meter indicates that the rated current is 20A and the maximum current is 60 A. If the rated current is exceeded, the electric meter may not be charged correctly, so be careful to spend more money! If the maximum current is exceeded too much, the electric energy meter may go on strike!

Diameter of wire metal core

The diameter of the wire metal core determines the current it can withstand! Copper wire can bear more current than aluminum wire with the same diameter. The thicker the wire, the greater the current it can withstand!

Specification for interior wall wires

4 square millimeters of copper wire is commonly used in the interior wall, which can easily cope with 3 kilowatts of electrical appliances! Lighting lines generally use 2.5 square millimeters of copper wire, which can withstand 1 kW. Remember, the power of electric light is generally within 200W W W. If the wire is too thin, it may cause serious heat and even fire. Safety first!