[Discussion] Do all cooking appliances in the kitchen need to be equipped with leakage protection?
For electrical equipment powered by single-phase 220v power supply, bipolar double-wire residual current protection device is selected; For electrical equipment powered by three-phase three-wire 380V power supply, three-pole three-wire residual current protection device should be preferred; Three-phase four-wire 380V power supply for electrical equipment, four-pole four-wire residual current protection device should be adopted for three-phase equipment and single-phase equipment;