I installed a new kitchen ring about 3 weeks ago ready for a new kitchen to be installed, the customer wanted a grid switch arrangement to isolate the dishwasher, washing machine and fridge.
They called me last week to say that the main switch RCD suddenly started tripping on a regular basis (few times a day). I started the process of elimination and found that when the dishwasher was switched off no tripping occurred. I then plugged the dishwasher into a different circuit and no tripping occurred. I IR'd from the grid switch to the socket and got >299 on all 3 readings. I checked the socket and it was ok.
I haw now a bit flummoxed as to what the problem could be. If you switch the dishwasher on it will trip within 5 minutes, you can reset it and it will trip again after a few more minutes.
The only thing I can think off is the grid switch itself. The dishwasher worked ok for about 1 week before the problem started.
Any thoughts would be appreciated.
They called me last week to say that the main switch RCD suddenly started tripping on a regular basis (few times a day). I started the process of elimination and found that when the dishwasher was switched off no tripping occurred. I then plugged the dishwasher into a different circuit and no tripping occurred. I IR'd from the grid switch to the socket and got >299 on all 3 readings. I checked the socket and it was ok.
I haw now a bit flummoxed as to what the problem could be. If you switch the dishwasher on it will trip within 5 minutes, you can reset it and it will trip again after a few more minutes.
The only thing I can think off is the grid switch itself. The dishwasher worked ok for about 1 week before the problem started.
Any thoughts would be appreciated.