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Ok will do, and he boiler is being checked today hopefully.

Ok Spark123 will do. Its going to be a few weeks before the electrician can com back to sort out the lights and I have a boiler engineer coming out next week to test the boiler for earth leakage. The cooker has just been tested by a Hotpoint technician last night and he said it had passed his tests.

Ok spark123 over the next few days I will try and turn one appliance off at a time, I will start with the dishwasher first. I don't have any outside lights here.

Spark123 Have I got this right, the 30mA RCD is for earth leakage faults on anything that is connected to it when tripped? The 100mA RCD is for the cooker, boiler and lighting earth leakage fault when tripped? All the MCB'S are for over loading that circuit? What would you suggest to be...

We have got the boiler engineer coming out to look at the boiler next week. There is a reversed polarity on one of the lights that will be looked at in a few weeks from know but the electrician says he doesn't think its the cause.

Does the appliance have to be running to cause the trip or just switched on? The reason I'm asking is that the cooker, boiler and lights that are on the 100mA side were all switched on but not running on the last time it tripped.

Hi Spark123 Apologies for mistake in my post. I have corrected it know. unfortunately I don't own a camera or know anyone that could loan me one. The RCD reads 80A-100mA WRM80/2 and the other RCD 80A 30mA WRS80/2 on the 100mA side is the cooker NSB40, lights NSB06 and combi boiler NSB16 and...

It sounds very complicated to build. Is there a device that can be bought that plugs inline between the appliance and the socket?

I've been told is it’s an accumulative effect from different sources from some of the circuits, not enough to trip the 30mA RCD but enough to trip the 100mA RCD. I think the reading was about 40 when measured on earth at CU and he gave the impression that it must be rising at some point to trip...

The multi meter that I have is called a Precision Gold WG 022 from Maplins that has mA on it. Can I get some clamp leads for it and use this for testing? If I have to get a Digital Clamp meter to test, can anyone recomend one that works ok and is one of the cheaper ones if possible?

Can I check for earth leakage myself with my multi meter? What setting would I use?

Spark123 when you said about replacing with a Selective (S) RCD will help them to discriminate by the (S) RCD giving the normal type RCD time to clear the fault before the (S) RCD starts to trip. Could you explain to me if the 100mA does get changed over for the S version what should happen...

What sockets are on the down radial are only the living room ones. The dinning room is on the kitchen ring main and the kitchen is on a separate MCB. I have 4 items that come on and go to standby, recorder cable box etc. I do have a 28 inch flat screen CRT TV that does come on when trip is...

I guess he will be replacing the 100mA RCD with a Time Delayed (S Type)? Why would replacing the 100mA with a timed delayed type help? Yes we got the bill and sent off the check the same day.

It could be my pc in the living room that is causing the trip then. The power supply in my pc is a corsair 620. Is there anything I can do to stop this happening? Can I use my multi meter to check for this?

Could it be my equipment causing the tripping or is a fault with the electric wiring etc?

Yes

So could it be a peace of my equipment causing the tripping or is it almost certain to be a fault with the electric wiring etc? I know that when the CU was put in there was a two week gap before coming back to do the testing and in that two weeks I did not have it trip. It only tripped after...

It is a qualified electrician that installed and done the tests. I have not been given the certificate yet as he has to find a reverse polarity fault on the lighting circuit but he did say that all other tests were within the specs and had passed all tests. All circuits were being used to some...

Just had a new consumer unit installed to replace my ageing fused board and old type trip with a green button on it. The system is a TT, I think this is correct for over head mains that are feeding the house. The new CU has a 100mA RCD and a 30mA RCD with earth rod in the ground. I have never...