What is the minimum distance that must be maintained from a nonmetallic conduit containing a high-voltage circuit operating at 100 hertz or less?

The minimum distance that must be maintained from a nonmetallic conduit containing a high-voltage circuit operating at 100 hertz or less is established to ensure safety by preventing electric arcing and minimizing electromagnetic interference. This specific spacing is outlined by electrical codes and standards that address the need to isolate high-voltage lines from other materials to maintain a safe environment and operational integrity.

Maintaining a distance of 1 1/2 inches provides an effective buffer to reduce the risk of adverse effects from the high-voltage circuit. It allows for adequate electrical insulation and minimizes the chances of unintended electrical faults or the influence of electrical fields on nearby conductive materials or persons. This standard helps ensure that equipment operates safely and reliably in close proximity to high-voltage circuits.