W WSparky Junior Member Joined May 15, 2011 Messages 4 Reaction score 0 Location Uk Jan 12, 2021 #1 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.
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.
NozSpark Seaman stains™ Supporting Member Joined May 28, 2008 Messages 12,314 Reaction score 121 Location North Wales Riviera Jan 12, 2021 #2 you use your calculated (or measured) current, then get the operating time (that relates to that current) from the appropriate chart
you use your calculated (or measured) current, then get the operating time (that relates to that current) from the appropriate chart