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Why can't fuse be replaced by copper wire

Why can't fuse be replaced by copper wire

  • Categories:Trend News
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  • Time of issue:2020-07-30
  • Views:0

(Summary description)Although the fuse is also a kind of metal wire, it is different from ordinary copper wire and iron wire. It is soft and is made of lead, antimony or low melting point alloys such as lead and tin. It has high resistivity, low melting point and is naturally afraid of heat. Due to the thermal effect of the current, as long as the current passing through the fuse exceeds the rated current of the fuse and reaches the fusing current, the fuse will fuse rapidly and automatically disconnect the circuit and power supply. In this way, the strong current can no longer enter the user's home, so as to prevent the instruments, appliances or wires connected in the circuit from burning out due to the strong current. The fuse is broken and can't be replaced by copper wire or iron wire. If the fuse is replaced by copper wire or iron wire, because of their high melting point, even if the strong current passes through, it will not melt, so it can not cut off the current automatically and can not play a role of safety. It is very dangerous. In addition, when installing the fuse, you must pay attention to choose the appropriate thickness. There are many specifications of fuse, usually expressed by its rated current. For the fuse of the same material, the larger the section diameter, the larger the allowable rated current. Therefore, the total current through the circuit must be slightly greater than the rated current of the circuit. In this way, not only can the fuse work normally, but also can ensure that the fuse can quickly fuse and cut off the circuit when encountering excessive current. If the rated current of the fuse is too large, it will not fuse when there is too strong current passing through the circuit, and it will not play the role of insurance, which is no different from connecting steel wire and iron wire; if the rated current is too small, then in the normal power consumption, the fuse will also blow, causing power failure.

Why can't fuse be replaced by copper wire

(Summary description)Although the fuse is also a kind of metal wire, it is different from ordinary copper wire and iron wire. It is soft and is made of lead, antimony or low melting point alloys such as lead and tin. It has high resistivity, low melting point and is naturally afraid of heat. Due to the thermal effect of the current, as long as the current passing through the fuse exceeds the rated current of the fuse and reaches the fusing current, the fuse will fuse rapidly and automatically disconnect the circuit and power supply. In this way, the strong current can no longer enter the user's home, so as to prevent the instruments, appliances or wires connected in the circuit from burning out due to the strong current. The fuse is broken and can't be replaced by copper wire or iron wire. If the fuse is replaced by copper wire or iron wire, because of their high melting point, even if the strong current passes through, it will not melt, so it can not cut off the current automatically and can not play a role of safety. It is very dangerous. In addition, when installing the fuse, you must pay attention to choose the appropriate thickness. There are many specifications of fuse, usually expressed by its rated current. For the fuse of the same material, the larger the section diameter, the larger the allowable rated current. Therefore, the total current through the circuit must be slightly greater than the rated current of the circuit. In this way, not only can the fuse work normally, but also can ensure that the fuse can quickly fuse and cut off the circuit when encountering excessive current. If the rated current of the fuse is too large, it will not fuse when there is too strong current passing through the circuit, and it will not play the role of insurance, which is no different from connecting steel wire and iron wire; if the rated current is too small, then in the normal power consumption, the fuse will also blow, causing power failure.

  • Categories:Trend News
  • Author:
  • Origin:
  • Time of issue:2020-07-30
  • Views:0
Information

Although the fuse is also a kind of metal wire, it is different from ordinary copper wire and iron wire. It is soft and is made of lead, antimony or low melting point alloys such as lead and tin. It has high resistivity, low melting point and is naturally afraid of heat. Due to the thermal effect of the current, as long as the current passing through the fuse exceeds the rated current of the fuse and reaches the fusing current, the fuse will fuse rapidly and automatically disconnect the circuit and power supply. In this way, the strong current can no longer enter the user's home, so as to prevent the instruments, appliances or wires connected in the circuit from burning out due to the strong current. The fuse is broken and can't be replaced by copper wire or iron wire. If the fuse is replaced by copper wire or iron wire, because of their high melting point, even if the strong current passes through, it will not melt, so it can not cut off the current automatically and can not play a role of safety. It is very dangerous. In addition, when installing the fuse, you must pay attention to choose the appropriate thickness. There are many specifications of fuse, usually expressed by its rated current. For the fuse of the same material, the larger the section diameter, the larger the allowable rated current. Therefore, the total current through the circuit must be slightly greater than the rated current of the circuit. In this way, not only can the fuse work normally, but also can ensure that the fuse can quickly fuse and cut off the circuit when encountering excessive current. If the rated current of the fuse is too large, it will not fuse when there is too strong current passing through the circuit, and it will not play the role of insurance, which is no different from connecting steel wire and iron wire; if the rated current is too small, then in the normal power consumption, the fuse will also blow, causing power failure.

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