It ensures cables and motors don't catch fire before the protection kicks in. 4. Key Factors That Affect the Result
The magnitude of the short-circuit current ($I_{sc}$) is theoretically determined by Ohm’s Law: $$I_{sc} = \frac{V_{source}}{Z_{total}}$$
A month later, a real fault occurred—a wrench fell across the motor terminals. The breakers opened cleanly. There was a small bang, a flash, and then silence.