Some electrical installation construction personnel often do not pay attention to the installation quality when laying wires:Do not install casing where insulating casing should be used; There is no junction box where junction boxes should be used; Even at the wire joint, the illegal hook connection method is adopted instead of the splicing method. The contact resistance of this hook-shaped connection method is very large, and it will continue to heat up when it is electrified, which will gradually dry and carbonize the nearby boards and finally burn, causing a fire.Heating of wire connector will not only cause a lot of electric energy loss, but also seriously affect the normal work of electrical equipment, ranging from increasing the working current in the line and shortening the service life of electrical equipment, to suddenly interrupting the ongoing production, scientific research, medical surgery and other activities, and also causing fires and electric shock accidents, causing incalculable losses.

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