As it relates to rapid shutdown of a PV system, the term array boundary is defined as ___ inches from the array in all directions.

As it relates to rapid shutdown of a PV system, the term array boundary is defined as ___ inches from the array in all directions.

• A. 6 inches
• B. 18 inches
• C. 12 inches
• D. 24 inches

Answer: (C)

The term array boundary defines the perimeter around a PV array within which rapid shutdown must de-energize conductors. That boundary is twelve inches from the outer edge of the array in all directions. This one-foot buffer creates a clear, consistent zone for safety during shutdown and for emergency responders, while keeping the necessary area to access and work around the array practical. A smaller distance would reduce safety margins, whereas a larger distance would unnecessarily expand the area affected during shutdown.

The term array boundary defines the perimeter around a PV array within which rapid shutdown must de-energize conductors. That boundary is twelve inches from the outer edge of the array in all directions. This one-foot buffer creates a clear, consistent zone for safety during shutdown and for emergency responders, while keeping the necessary area to access and work around the array practical. A smaller distance would reduce safety margins, whereas a larger distance would unnecessarily expand the area affected during shutdown.