Which item is not required to be legibly marked on the disconnecting means of an ESS?

Which item is not required to be legibly marked on the disconnecting means of an ESS?

• A. Nominal output voltage
• B. Available output current
• C. Available fault current
• D. Calculation date

Answer: (B)

Labeling the disconnecting means for an energy storage system focuses on hazard communication and ensuring proper protective coordination. The essential items to legibly mark are the nominal voltage and the available fault current, so responders and protective devices can be correctly sized and safety is maintained. The calculation date is included to show when the fault-current data was last verified, which helps determine if any updates are needed after changes to the system. The continuous or available output current of the ESS isn’t required to be marked on the disconnect itself; this value isn’t used to determine the disconnect’s rating or safety clearances in the same way voltage and fault current are.

Labeling the disconnecting means for an energy storage system focuses on hazard communication and ensuring proper protective coordination. The essential items to legibly mark are the nominal voltage and the available fault current, so responders and protective devices can be correctly sized and safety is maintained. The calculation date is included to show when the fault-current data was last verified, which helps determine if any updates are needed after changes to the system. The continuous or available output current of the ESS isn’t required to be marked on the disconnect itself; this value isn’t used to determine the disconnect’s rating or safety clearances in the same way voltage and fault current are.