On a community-center project during plan review, multiple nominal voltage systems are present in a building; what is needed at equipment?
- ANo marking after energization
- BConductor color alone in every case
- CA handwritten note kept off site
- Required voltage identification
Why D is correct
Durable field identification helps workers recognize system hazards and is not replaced by undocumented assumptions. The best answer is therefore “Clear identification of the system and nominal voltage where required.” The other choices either address a different system, rely on an unsafe shortcut, or make a conclusion not supported by the stated facts.