Etymology:
The word "creepage" originates from the Middle English word "crepe," meaning "a crack or fissure." It is derived from the Old English word "creopan," meaning "to creep or crawl."
Meaning:
Creepage refers to the slow spread of current or voltage across an insulating surface between two conductors, especially when the distance between them is small. It can occur due to moisture, contamination, or other factors that compromise the insulation.
Origin:
The term "creepage" has been used in electrical engineering since the late 19th century. It was first applied to describe the phenomenon of current leakage across the surface of insulators in electrical equipment. Over time, the term has come to refer more broadly to the spread of current or voltage across any insulating surface, not just in electrical equipment.
Usage:
Creepage is a critical factor in electrical design, as it can lead to electrical hazards such as short circuits, fires, and explosions. Engineers take precautions to prevent creepage by using insulators with high dielectric strength and creepage distance, and by protecting insulators from moisture and contamination.
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