On a tenant improvement during rough-in, service equipment likely to require energized examination lacks hazard warning; what should be provided?
- AA panel directory only
- BA larger neutral
- The arc-flash warning
- DA residential smoke alarm
Why C is correct
Workers need warning of potential arc-flash hazard before examination, adjustment, servicing, or maintenance while energized. The best answer is therefore “The applicable arc-flash hazard warning marking.” The other choices either address a different system, rely on an unsafe shortcut, or make a conclusion not supported by the stated facts.
