Risk Of Creepage Due To Overheating Of Cable Terminals

If there is poor contact at cable lugs, the risk of creepage should not be underestimated. Creepage refers to the flow of current along the insulating surface of wire lugs. This phenomenon is usually caused by poor contact, overheating of electrical lugs, or deterioration of the insulation layer. When the contact points overheat, especially under high loads or long-term use, the insulation material of terminal lugs may be damaged, thereby reducing the safety of the electrical system.

Poor contact in copper lugs circuits often leads to localized high temperatures, which can cause thermal stress on the insulation material. Over time, the insulation layer may crack, age, or even become brittle, reducing clearance and creating conditions conducive to creepage. Creepage not only causes current leakage but can also lead to short circuits, system malfunctions, and even serious consequences such as fires.