Reasons That Affect the Current Carrying Capacity of the USB Cable

Flow rate refers to the amount of current passed by a cable line when transmitting electric energy. Under thermally stable conditions, the cable carrying capacity when the cable conductor reaches the long-term allowable working temperature is called the cable long-term allowable current carrying capacity. In actual engineering, you can refer to the long-term allowable current-carrying capacity of the cable under different environments and conditions according to your needs, select different types of cables, and determine the number of cables required and the cable laying form. Today I will share with you the influencing factors of USB cable current carrying capacity.

The factors that will affect the carrying capacity of the USB cable during use can refer to the following points:

Temperature: The higher the temperature, the lower the current carrying capacity of the USB cable. This is a common problem and the main reason why the cable used in construction needs to be thicker than the cable used in the power strip. Moreover, in many cases, the ambient temperature is uncontrollable. The ventilation effect, sunshine conditions, and cable density will affect the ambient temperature and thus the current carrying capacity of the cable.

Insulating material: The current carrying capacity of different insulating materials is different. For details, please refer to the national standard.

Length: The longer the USB cable, the lower the current carrying capacity. The current carrying capacity of a 100-meter cable and the current carrying capacity of a 10,000-meter cable are not an order of magnitude difference.

Dense degree: The cable laying is too dense, not only will cause the temperature to be too high. When multiple wires are laid in parallel, the proximity effect and skin effect will also be formed, so that the electric charge is concentrated in the part of the wire section and the allowable current-carrying capacity of the wire is reduced.

In order to ensure safety during actual use in daily life, the voltage should not exceed the safe voltage. Otherwise, when a certain amount of heat is reached, burning will occur and it will be very dangerous. Therefore, when we use electricity, we must first understand the safety voltage. Once we find that the electricity consumption has exceeded the safe voltage, we must immediately stop using the electricity, so that the risk factor can be reduced or even the danger can be avoided.