Since electric vehicles do not have parts that are prone to high temperature, such as engines and exhaust pipes, the overall temperature of electric vehicles is slightly lower than that of traditional fuel vehicles, and the working temperature of high and low voltage wiring harnesses generally does not exceed 125 °C.
If the vehicle is not a pure electric vehicle, but a hybrid vehicle, it is necessary to consider high-temperature parts such as the engine and exhaust pipe. When the high-voltage wiring harness is arranged around it, if the ambient temperature exceeds the allowable working temperature of the wire, the high-voltage wiring harness can be added. Diameter and the method of directly selecting high-temperature wires, so that the wire harness can meet the requirements of ambient temperature.