Question 1: When is labeling of arc flash hazards required by NFPA 70E?
1.
If maintenance or servicing is being performed.
2.
If voltages are above 480 V.
3.
Only when the hazard is accessible.
4.
If the hazard boundary is less than 24 inches.
5.
Labeling is not required.
6.
If the equipment is likely to require examination or servicing while energized.
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