Power cords, as the main wires for current transmission in electrical appliances, have become widespread in thousands of households and are no strangers to everyone. But what quality issues could there be with power cords? The common quality and safety conditions that usually exist mainly include: wire resistivity, wiring of connection wire sockets, marking of plugs and power cords, and wiring of power cords with plugs not conforming to the standards.

Now let's take a look at the specific situations of these several issues: Power cord wire resistivity: At room temperature of 20 degrees, the wire resistance value is greater than the standard value. Wire resistance power, as a very important data for measuring the electrical performance of power supply lines, is a crucial indicator for ensuring the safety of power usage during the transmission of electrical energy by power supply lines. As a product of wire and cable, the resistance power of the power cord is a very important inspection item for determining the quality of the wire.

In order to better save costs and bring greater profits, some power cord manufacturers use alloy copper with a lower copper content in their power cords, and even use other metals such as iron wires. Or, measures such as reducing the number of flexible conductors or decreasing the diameter of individual wires can be taken to make the cross-sectional area of the conductors much smaller than the nominal cross-sectional area of the conductors. Or the manufacturing process is substandard. The annealing process affects the quality of raw materials, resulting in an increase in the resistance value of the wire. The above situation can easily cause the power cords of household appliances to overheat during long-term use, leading to serious problems such as short circuits and open circuits, which poses a significant safety hazard.

In order to better save costs and bring greater profits, some power cord manufacturers use alloy copper with a lower copper content in their power cords, and even use other metals such as iron wires. Or, measures such as reducing the number of flexible conductors or decreasing the diameter of individual wires can be taken to make the cross-sectional area of the conductors much smaller than the nominal cross-sectional area of the conductors. Or the manufacturing process is substandard. The annealing process affects the quality of raw materials, resulting in an increase in the resistance value of the wire. The above situation can easily cause the power cords of household appliances to overheat during long-term use, leading to serious problems such as short circuits and open circuits, which poses a significant safety hazard.