How must the six disconnects be arranged in relation to the load served?

• A. Grouped and marked to show the load served
• B. Kept separate with no marking
• C. Grouped but without load labeling
• D. Not required to be grouped

Answer: (A)

The six disconnects must be grouped and clearly marked to show which load each one serves. This setup makes it easy to identify and isolate specific portions of a system, which is crucial for safe maintenance, testing, and emergency shutdowns. When the disconnects are grouped together, you can quickly shut down the entire system or a particular subset without hunting through a jumble of switches. The labeling communicates exactly what load will be de-energized when a given disconnect is opened, preventing confusion that could lead to accidentally energizing equipment or leaving something powered during work.

Keeping disconnects separate with no marking would create uncertainty about what each switch controls, increasing the risk of mistakes. Grouping without labeling leaves you knowing that some grouping exists, but not which loads are affected, which is not acceptable for safe operation. And saying they’re not required to be grouped ignores a fundamental safety practice: you need clear, organized identification of the loads served by each disconnect.