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Let through Energy - Cable Sizing

Nick Parker
Why let through energy of cable is calculated and compared against protective device let through energy, when adiabatic equation and disconnection time check is used to verify the cable sizes? or this let thru energy verification is applied only for current limiting breakers / fuses?
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    Nick


    The energy let through has to be equal to or less than the thermal withstand of the cable. So Isqt <= K sq x S sq.
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    Nick


    The energy let through has to be equal to or less than the thermal withstand of the cable. So Isqt <= K sq x S sq.
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