Arc Flash Study
Electrical hazards can cause burns, shocks and electrocution (death). Assume that all overhead wires are energized at lethal voltages
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Protective Boundary Approach
If an arc flash occurred, this boundary is where an employee would be exposed to a curable second degree burn (1.2 calories/cm2).
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The TCC
The easiest way to reduce clearing time of arc fault is by reducing the instantaneous setting or the short time pickup (STPU) setting of a protective device.
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Safety
Electrical hazards can cause burns, shocks and electrocution (death). Assume that all overhead wires are energized at lethal voltages.
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