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WSparky

Adiabatic minimum csa

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WSparky

When calculating fault current in the adiabatic equation for min csa. Do I use a calculated Zs from Ze and R1 + R2 or do I use the tabulated max Zs. If either, why? Thank you. 

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NozSpark

you use your calculated (or measured) current, then get the operating time (that relates to that current) from the appropriate chart

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