Fire Hazard Research of Wire Joint

摘要

With the presentation of a fire accident caused by wire joint, this paper reveals the theory that large contact resistance at wire joint can induce high temperature, and eventually can cause fire. Through macro-examination and metallographic analysis about the melted marks of wire joint, it clarifies the formation mechanism of the melted marks, and the corresponding preventive measures which can prevent wire fires, provide a practical and reliable scientific basis to guarantee the safe operation of house power system.