What is required for multiple disconnects according to NEC guidelines?

The requirement for multiple disconnects according to NEC guidelines emphasizes that they must be grouped and clearly marked with the load they serve. This grouping helps ensure that individuals working on electrical systems can quickly and easily identify which disconnects control which branches of the electrical system. Proper labeling is essential for both safety and efficiency, allowing for quick isolation of specific circuits during maintenance or emergencies.

Grouping the disconnects together can also enhance accessibility and help prevent confusion, particularly in larger installations where multiple circuits are present. When electrical work is involved, this practice aids in minimizing the risk of accidental energization and ensures that personnel can safely perform their tasks.

In contrast, other choices do not align with NEC guidelines. For example, having disconnects of different ratings doesn't enhance safety or clarity and may complicate maintenance. The notion that only one disconnect is required misrepresents the need for sufficient isolation for multiple circuits. Finally, while accessibility is crucial, the requirement for grouping and marking overrules pure access considerations in terms of standing safety protocol.