Which consequence results when harmonic currents exceed transformer neutral sizing limits in a three-phase power distribution system using molded case circuit breakers?

💡 Explanation

Spurious breaker tripping happens when excessive harmonic currents cause neutral conductors to overheat. The increased current distorts the voltage signal seen by the breakers causing nuisance Electromagnetic Interference (EMI) because breakers are designed for fundamental frequency rather than harmonic content; therefore, they trip early rather than sustaining the load.

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