EPSCO Arc Flash Study Short Circuit Study
Technical Documentation Short Circuit Study


When an energized conductor contacts another energized conductor or ground, the load
for the circuit is bypassed, and the impedance is greatly decreased. By simply using ohms’
law we can conclude that the amount of current will greatly increase. The total amount
of available or prospective short circuit current is variable to several various aspects
including utility contribution, upstream transformer credentials, system architectural
design, voltage, etc. Generally, in a short circuit fault, the energy is contained to the
current-carrying conductors and protective devices opening the circuit.