Hi
I moved into my home 2 years ago, but before I moved in I had the place rewired top to bottom. The electrician installed a dual RCD consumer unit, and everything seemed to work well. A few months back my kettle developed a fault and it kept tripping the RCD, I was a little taken back because I would have thought that the MCB for the kitchen should have tripped first. I bought a new kettel and all was well again.
But last week I had a separate guy come and install a socket in the garden. The way he did it was to take a spur from a near by kitchen socket, but he has also installed an isolation switch. The garden socket has a built in RCD, but here something strange is happening. The socket has a test button, and each time I press the test button the RCD serving the kitchen trips.
When pressing the test button I would expect the outside socket to cut off and not effect the circuits inside, and if it did then the kitchen MCB should trip before the RCD....right?
When I was having the kettel problem I read something online about an earthing issue possibly causing the RCD tripping instead of the MCB, but I can't see why pressing the test button on the outside socket is tripping the RCD too.
Can someone tell me if this is normal?
I moved into my home 2 years ago, but before I moved in I had the place rewired top to bottom. The electrician installed a dual RCD consumer unit, and everything seemed to work well. A few months back my kettle developed a fault and it kept tripping the RCD, I was a little taken back because I would have thought that the MCB for the kitchen should have tripped first. I bought a new kettel and all was well again.
But last week I had a separate guy come and install a socket in the garden. The way he did it was to take a spur from a near by kitchen socket, but he has also installed an isolation switch. The garden socket has a built in RCD, but here something strange is happening. The socket has a test button, and each time I press the test button the RCD serving the kitchen trips.
When pressing the test button I would expect the outside socket to cut off and not effect the circuits inside, and if it did then the kitchen MCB should trip before the RCD....right?
When I was having the kettel problem I read something online about an earthing issue possibly causing the RCD tripping instead of the MCB, but I can't see why pressing the test button on the outside socket is tripping the RCD too.
Can someone tell me if this is normal?