Definition of a Short Circuit Fault:
A short circuit is a low resistance connection between conductors supplying electrical power to a circuit.
This results in excessive current flow in the power source through a 'short'. When a short circuit occurs,
current in the system increases to an abnormally high value while the system voltage decreases to a low
value. The short rapidly produces electromagnetic forces that send the cables violently repelling against
each other that can damage equipment and injure or even kill personnel.
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K-factor calculations
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source : What is the short circuit current capacity ? (https://elek.com/articles/short-circuit-rating-calculations-for-cables/)
References:
AS/NZS 3008.1: Electrical installations — Selection of cables, Part 1.1: Cables for alternating voltages up to and including 0.6/1 kV
BS 7671 – 18th Edition The IET Wiring Regulations
IEC 60364-5-54 Electrical installations of buildings – Part 5-54: Selection and erection of electrical equipment – Earthing arrangements, protective conductors and protective bonding conductors
IEC 60364-4-43 Low-voltage electrical installations – Part 4-43: Protection for safety – Protection against overcurrent
Calculation of the minimum cross-section area to withstand short-circuit current
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https://www.youtube.com/watch?v=mKGTW63SgJ0
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