In general, it is not recommended to have a refrigerator and dishwasher on the same electrical circuit or breaker. Refrigerators and dishwashers are both high-power appliances that require a dedicated circuit to ensure they receive sufficient electrical supply and prevent overloading.
Refrigerators, especially larger models, can draw a significant amount of power when they start up, as the compressor kicks in. If the refrigerator shares a circuit with another high-power appliance like a dishwasher, it can lead to frequent circuit tripping or inadequate power supply for both appliances to function properly.
To ensure proper electrical safety and performance, it is best to have separate dedicated circuits for your refrigerator and dishwasher. If you're unsure about the electrical requirements or circuit configuration, it's always recommended to consult a licensed electrician to assess your specific situation and provide appropriate guidance.