At what height is it permissible to secure cable without the use of conduit?

The permissible height to secure cable without the use of conduit is above 10 feet. This height is significant because it allows for a practical application of electrical wiring standards while ensuring safety and accessibility. When cables are installed above this height, they are typically less likely to be subject to physical damage or interference since they are placed out of reach of everyday activities, reducing the risk of accidental contact or wear and tear that might occur at lower heights.

In contrast, securing cables below this height may require additional protective measures, such as conduit, to ensure that the wiring is safeguarded from potential hazards. This is a standard practice to comply with electrical codes and regulations, which prioritize both safety and functionality in electrical installations.