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The causes and prevention of fire at the power cord line
Publisher：admin Time：2012/4/26 8:26:39 Browse：1549
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Power can not see, touch them, but we are living and learning work has brought great convenience, but at the same time how to use inappropriate will be serious consequences. Such as electric shock, the line of fire caused due to aging of the power cord, then what caused the fire power cord line main reason for it, let's talk about everyone.
(A) the power line circuit overload. Certain materials and certain size of the cross-sectional area of the wire the safe carrying capacity. Beyond its safe carrying capacity, the current through the wire, the wire will be a fever. Exceeded more, the greater the amount of fever. When the heat the wire and the temperature exceeds 250 ℃, rubber or plastic insulation of the power cord will catch fire and burn. If the wire "coat" is damaged, it will result in a greater risk of short circuit, fire. In addition, if the chosen differences specifi
(D) of poor contact. Because of poor electrical connector, resulting in line contact resistance is too large and fever fire. Where the circuit has a connector, or the power cord between the phase wires and switches, fuse, or the phase of electric appliances. If these joints connected well, it will hinder the activities of the electric charge in the wire, and produce large amounts of heat. When these hot enough to melt the wire insulation, the insulation will be on fire, and ignite surrounding combustibles.
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