Theres a lot of background to my question but just keeping it short-ish ...
For over a year I've had intermittent trips on the RCD and after a lot of advice/searching decided the most likely cause was a rather old fridge on one of the power rings but not the kitchen socket ring. Since this fridge was only used for keeping drinks cool, I unplugged it in Novenber last year. At the same time I switched off the dishwasher at its swiched spur on the kitchen ring, just to cut down the number of possibilities.
Since then, no more trips in 9 months, so this seemed proof that the old fridge was the culprit.
However, on 11 August we decided to use the dishwasher again (after a lot of visitors) so switched it on at the spur switch, used it but forgot to switch it off agin at the spur.
Three days later, at 2.00 in the morning, RCD trips along with the MCB for the kitchen ring.
The only other appliance on the kitchen ring that was on at that time was the newish fridge in the kitchen - and this has always been on.
So it seems to me that the dishwasher is the likely culprit. Nine months with it isolated at the spur and I have no problem. Three days after its no longer isolated, I have an RCD and MCB trip. Coincidence? I think not.
So what can go wrong with a dishwasher that's switched off at the appliance itself but still getting power supplied to it ??
By the way, it's a Neff which have had a safety issue with fires but my unit is not one of the dodgy batch.
For over a year I've had intermittent trips on the RCD and after a lot of advice/searching decided the most likely cause was a rather old fridge on one of the power rings but not the kitchen socket ring. Since this fridge was only used for keeping drinks cool, I unplugged it in Novenber last year. At the same time I switched off the dishwasher at its swiched spur on the kitchen ring, just to cut down the number of possibilities.
Since then, no more trips in 9 months, so this seemed proof that the old fridge was the culprit.
However, on 11 August we decided to use the dishwasher again (after a lot of visitors) so switched it on at the spur switch, used it but forgot to switch it off agin at the spur.
Three days later, at 2.00 in the morning, RCD trips along with the MCB for the kitchen ring.
The only other appliance on the kitchen ring that was on at that time was the newish fridge in the kitchen - and this has always been on.
So it seems to me that the dishwasher is the likely culprit. Nine months with it isolated at the spur and I have no problem. Three days after its no longer isolated, I have an RCD and MCB trip. Coincidence? I think not.
So what can go wrong with a dishwasher that's switched off at the appliance itself but still getting power supplied to it ??
By the way, it's a Neff which have had a safety issue with fires but my unit is not one of the dodgy batch.