Which risk increases when exceeding a residential split-phase circuit's 80% continuous load limit?

A)Reduced harmonic distortion rating

B)Premature transformer core saturation

C)Accelerated circuit breaker thermal trip✓

D)Increased capacitive coupling impedance

💡 Explanation

Exceeding the 80% continuous load increases the risk of circuit breaker thermal trip, because sustained high current causes bimetallic strip deformation leading to contact separation, therefore interrupting the circuit, rather than voltage sags or magnetic effects on nearby transformers.

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Which risk increases when exceeding a residential split-phase circuit's 80% continuous load limit?

💡 Explanation

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