Modern residential building codes and appliance manufacturer guidelines strongly recommend using a dedicated 20-amp breaker (paired with 12/2 gauge copper wiring) for standard kitchen refrigerators. While a refrigerator compressor typically draws modest running current, startup surge loads and modern multi-compartment features require the extra capacity. A 15-amp breaker can be legally acceptable if it is a dedicated circuit, but a 20-amp circuit prevents nuisance tripping.
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