What must be done when installing conductors with respect to other services as per NEC Article 300.11?

When installing conductors, NEC Article 300.11 emphasizes the importance of ensuring that conductors are not installed parallel to or in close proximity to other services. This requirement is to minimize the risk of electrical interference and potential hazards such as electromagnetic induction, which can affect the performance of the conductors involved. Keeping conductors apart helps to avoid unwanted interactions between systems that may not have compatible characteristics, such as voltage levels or insulation properties, which can create safety concerns.

This provision also promotes a clear separation between different types of services—such as power, communication, and data—to prevent potential cross-talk or interference that could compromise operational integrity. By adhering to this strict guideline, the installation ensures both the safety of the electrical system and compliance with the established safety standards of the NEC.

In contrast, the other options either misinterpret this requirement or overlook critical aspects of installation and safety that are addressed by the NEC guidelines. For example, simply having full insulation does not guarantee the safe operation of conductors running parallel to other services, nor is there a provision allowing unrestricted placement above other services without consideration for maintenance access or potential interference.