What does the 100' (30 m) Tap Rule specify regarding tap length?

The 100' (30 m) Tap Rule is crucial in electrical installations as it sets parameters for tap conductors to ensure safety and efficiency in distribution systems. The correct answer states that the tap length is limited to a maximum of 25' (7.5 m) when running horizontally, with a total permitted tap length that cannot exceed 100' (30 m).

This rule is designed to prevent excessive voltage drop and to ensure that the tap conductors can handle the load without overheating. The limitations on horizontal tap length help to maintain the integrity of the electrical system and minimize potential issues that could arise from longer extensions. Therefore, adhering to the specified lengths contributes to the overall safety and functionality of electrical installations.

While other options may touch on aspects of electrical installation rules or conditions, they do not accurately capture the specifics of the Tap Rule as it applies to the maximum allowable lengths for tap conductors in respect to both horizontal distance and total length.