spatial distance

The clearance distance required to maintain insulation between conductors. While the creepage distance refers to the distance along the surface of connecting objects such as circuit boards, clearance distance indicates the shortest straight-line distance between conductors. Many electronic equipment safety standards stipulate the necessary clearance distances to maintain insulation. When air serves as an insulating material, clearance becomes a critical factor in ensuring insulation. The greater the potential difference, the more likely insulation breakdown is to occur, requiring a larger clearance.