What is the requirement for underground coaxial cable located in a manhole with electric conductors?

The requirement for underground coaxial cable located in a manhole alongside electric conductors is that it should be in a section permanently separated from the conductors by a barrier. This standard is in place to prevent any potential interference or accidental contact between different types of cables, which could lead to safety hazards or signal degradation.

Maintaining this separation ensures that the coaxial cable, which is typically used for data and video transmission, does not suffer from electromagnetic interference caused by the electric conductors. It also helps to protect the integrity of the coaxial cable from any potential electrical faults that could arise from the nearby conductors. The barrier acts as a safety measure and is often a requirement in electrical codes and standards to promote safe practices in cable installations.

The other options provided do not meet safety regulations and best practices for cable installation in such environments, as they either do not prioritize safety protocols or wrongly suggest that cables can be intermixed or improperly installed.