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Used commercial dishwasher rcd trip rating.

hertzal123
The customer has asked me to connect the above to an existng 3ph,32A supply.The unit will be next to a s/s sink.

The unit will be hard wired to an isolator.Wondered if a 30ma rcd is required or 100ma would be better due to leakage

current when the elements are cold.

                                                   Regards,Hz
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    Alan,


    Agreed ... not always a problem, but I do know for certain that some commercial laundry/dishwashing appliances, single-phase and three-phase, do have (at certain points in the cycle, or when opening the door lock) high protective conductor currents sufficient to operate a 30 mA RCD. These machines also require supplementary earthing to meet BS EN 60204-1 and BS 7671 requirements.


    The only place you can find this information is in the installation instructions.
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    Alan,


    Agreed ... not always a problem, but I do know for certain that some commercial laundry/dishwashing appliances, single-phase and three-phase, do have (at certain points in the cycle, or when opening the door lock) high protective conductor currents sufficient to operate a 30 mA RCD. These machines also require supplementary earthing to meet BS EN 60204-1 and BS 7671 requirements.


    The only place you can find this information is in the installation instructions.
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