Oven Electrical Ground Fault Symptoms

When an electric oven trips a breaker specifically during the preheating phase, it indicates a ground fault. To confirm this, monitor the oven during the first 10 minutes of operation. If the unit functions initially but trips the circuit breaker or RCD/GFCI safety switch precisely as the heating elements reach high temperatures, the system is likely leaking current to the grounded chassis due to thermal expansion or insulation failure.

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