RCD Trips

[IanBristol]

Hello,
I'm not an electrician. My RCD at home constantly trips. I tried turning off the power, resetting the RCD and putting the circuits back one by one, to work out what was tripping it. All were okay, except when I turned back on 'downstairs sockets' or 'upstairs sockets' either one of those would immediately cause the RCD to trip. I figured it may be a faulty appliance so went round and unplugged everything. However this made no difference. I thought it might be the fridge but I turned off the isolator and my electrician told me it couldn't be the fridge as it's behind a double pole isolator. My electrician is on holiday so won't be able to look for a few days. Is there anything else you think it could be or anything else I can easily check ? I don't have a multimeter or anything. Appreciate any help or advice you can give.

 

[Rockingit]

It's a bit needle in a haystack time...

General rule of thumb is that RCD's trip for 1 of 3 reasons:
1. Faulty appliance
2. Damage to a circuit
3. Water ingress.

 

[DPG]

Do you have any outside lights?

 

[IanBristol]

It's a bit needle in a haystack time...

General rule of thumb is that RCD's trip for 1 of 3 reasons:
1. Faulty appliance
2. Damage to a circuit
3. Water ingress.

Appliances are all unplugged so guess it's 2 or 3

 

[IanBristol]

Do you have any outside lights?

I do. I have a security light front and back of the house. Okay will look into it. Thank you

 

[littlespark]

Which rcd is it? Is it one for everything, one for a few circuits?