Cheers both of you. Have not checked the esc code of practice so will look that up. My instinct is to recommend 30ma on all the circuits as the installation is old and it is a restaurant so lots of people around the electrics, not to mention beer! Thanks again
I am going to do a Periodic Inspection of a large old restaurant, and whilst have seen that on a couple of the CU there are 100mA RCCB only. Will I have to insist that they are upgraded to 30mA? The system is TN/s.
I only ask as I know that the requirements for existing installations do not...
