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Electrical
NFPA 70E Qualified Electrical Worker
Shock & Arc Flash Approach Boundaries
Knowledge Check
Shock & Arc Flash Approach Boundaries
Knowledge Check
Knowledge Check
1 / 10
What is the arc flash boundary defined as?
A
The distance at which incident energy equals 1.2 cal/cm^2 - the onset of a second-degree burn from an arcing fault
B
The distance required to prevent hearing damage from arc blast
C
The boundary at which the voltage drops to 50V AC
D
The same as the limited approach boundary for all voltages
Check Answer
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