What is the minimum dimension permitted for the wiring method involving Schedule 40 PVC beneath a grassy area?

The minimum dimension permitted for the installation of Schedule 40 PVC conductors beneath a grassy area is 18 inches. This depth requirement is established to protect the wiring from potential physical damage from surface activities, such as mowing and foot traffic. Installing the conduit at this depth also ensures that the conductors are adequately insulated from the effects of frost and other environmental conditions that could affect their performance and safety.

Maintaining this specific depth is crucial to compliance with safety standards, as it helps prevent accidental damage that could lead to electrical hazards. This depth is also practical in terms of allowing sufficient coverage for the conduit without the risk of disruption by typical landscaping activities.