How much separation must power conductors on poles have from communication conductors when the power is greater than 300V?

When it comes to the separation of power conductors and communication conductors on poles, specific regulations are in place to ensure safety, particularly when the voltage of the power conductors exceeds 300V. According to the National Electrical Safety Code (NESC) and the National Electrical Code (NEC), a minimum vertical separation must be maintained between power and communication lines to prevent electrical hazards and ensure safe operation.

In this case, when the power conductors operate at greater than 300V, a separation distance of 30 inches is mandated. This distance helps prevent potential electric shock hazards, as well as interference from electromagnetic fields that could affect the communication lines. The prescribed distance is crucial for maintaining safety standards and preventing equipment damage or service interruptions.

While other distance options may exist for different voltage levels or types of conductors, the 30-inch requirement specifically addresses the situation of power conductors over 300V with respect to communication conductors, making it the correct answer.