Final answer:
The NEC Article 480.7(d) requires a "notification" placard for a battery disconnecting means to list the nominal battery voltage, maximum short-circuit current, date the current calculation was performed, and mark the battery disconnecting means in accordance with 110.16 for arc-flash hazards identification.
Step-by-step explanation:
The NEC Article 480.7(d) requires that certain information be listed on the “notification” placard for a disconnecting means of a battery system. This information helps in ensuring safety and proper maintenance. The correct elements that must be listed on this placard include:
- Nominal battery voltage: The voltage at which the battery system is rated.
- Maximum short-circuit current: The highest current that could flow when the battery is short-circuited, which is crucial for safety considerations.
- Date the current calculation was performed: To ensure that the information is up-to-date and calculations are based on the most current data available.
- Battery disconnecting means shall be marked by 110.16: This references marking for the purpose of identifying potential arc-flash hazards.
It is important to note that each of these elements serves an essential function in risk identification and management related to the operation and maintenance of battery systems. Workers can refer to these placards for critical information regarding potential hazards and the proper handling of the battery disconnecting means.