For rapid shutdown labeling, which combination of items I through V must be included on the permanent label located at each service equipment location?

For rapid shutdown labeling, which combination of items I through V must be included on the permanent label located at each service equipment location?

• A. I, II, III, and V only
• B. I and II only
• C. I and III only
• D. I, II, III, and IV only

Answer: (A)

The main idea here is what information must be on the permanent rapid shutdown label at a service equipment location so responders can quickly identify and de-energize the PV system safely. The label needs to clearly indicate which conductors originate from the PV array, where the rapid shutdown control is located, the action required to achieve rapid shutdown (and the time frame to drop to safe voltage), and any essential safety scope details like the voltage involved. Including I, II, III, and V provides those critical pieces: identification of the PV source circuits, the location or method to trigger rapid shutdown, the required action (and timing) to reduce voltage, and the relevant safety scope information. Item IV is not required for the label because it doesn’t contribute to enabling a rapid, safe shutdown.

The main idea here is what information must be on the permanent rapid shutdown label at a service equipment location so responders can quickly identify and de-energize the PV system safely. The label needs to clearly indicate which conductors originate from the PV array, where the rapid shutdown control is located, the action required to achieve rapid shutdown (and the time frame to drop to safe voltage), and any essential safety scope details like the voltage involved.

Including I, II, III, and V provides those critical pieces: identification of the PV source circuits, the location or method to trigger rapid shutdown, the required action (and timing) to reduce voltage, and the relevant safety scope information. Item IV is not required for the label because it doesn’t contribute to enabling a rapid, safe shutdown.