Which outcome occurs when a three-phase transmission line experiences a severe short circuit, exceeding a circuit breaker's interrupting rating?

💡 Explanation

Fault escalation occurs because without sufficient interrupting capacity, the circuit breaker's arc-quenching _mechanism_ fails under overcurrent conditions. This leads to continued current flow and further damage, therefore, the fault spreads, rather than being contained, under ideal or under-rated breaker conditions.

• Which mechanism limits the maximum load-bearing capacity of a pre-stressed concrete beam?
• Which outcome occurs when large-eddy simulation uses insufficient grid resolution near a solid surface?
• Which outcome occurs when differential settlement strains the tied columns of a concrete parking garage?
• Which outcome impairs a prestressed concrete beam in a marine environment?
• Which risk increases when turbocharger compressor blades experience excessive erosion?
• Which hazard arises when a three-phase circuit breaker fails to interrupt a short circuit?