SafetyQuestion 426 of 521
In NFPA 70E, the 'limited approach boundary' is best described as:
a.The distance within which a full arc-flash suit is always mandatory
b.A distance from an exposed energized part within which a shock hazard exists; an unqualified person must not cross it without a qualified escort and appropriate PPE
c.Exactly the same distance as the arc flash boundary
d.A boundary that applies only to DC systems
Explanation
The limited approach boundary is a shock-protection boundary; crossing it means a shock hazard is present, so unqualified persons need a qualified escort and PPE. It is distinct from the arc flash (thermal) boundary and applies to both AC and DC. The full arc suit is tied to incident energy, not this line.
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