Input Parameters

Results

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Arc Power
kW
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Incident Energy
cal/cm²
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PPE Category
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Arc Flash Boundary
inches
Note: DC arc flash hazards are real in PV systems. NEC 110.16 requires arc flash labels. Rapid shutdown (NEC 690.12) reduces risk by de-energizing conductors.

Reference

Arc Voltage ≈ 0.5 x System Voltage Arc Power = V_arc x I_arc Incident Energy = Arc Power x Time x 610 / D² Arc Flash Boundary = D x sqrt(IE / 1.2) D in cm, IE in cal/cm²