DIY Doctor UK DIY Forums

Can anyone apply some logic to what's happened?
Background: We have two plug socket MCBs.
Summary: Two separate kitchen appliances seem to be causing an MCB to blow (DIshwasher and Freezer)
Detail:
1. A socket MCB blew.
2. With the dishwasher off, I was able to reset the MCB.
- changed fuse in the dishwasher plug. Still blew MCB
- to confirm, I used an extension lead to connect the dishwasher to a socket on 2nd MCB. The 2nd MCB blew
- "belt and braces", I also checked using a second extension lead
3. With dishwasher disconnected, everything working again
But Alas....a few hours later...
4. Turned the freezer on...runs for about 10 seconds, gets up to speed...and low and behold: MCB blows!
Turn it off, Reset MCB , On....and blows again! WTF???
5. Same process - check via extension lead, now it appears I have a household appliance pandemic!!

Current situation: Running the house without the Freezer until I can understand the problem.

(P.S. My 11 year old Dishwasher is also now in the garage, assumed dead, but maybe I was too quick off the mark)

Has anyone got a vaccine (or good idea what the problem is) ?
Thank you in advance, Bob

It seems likely it is a RCD not a MCB tripping, and the problem is likely a neutral earth problem, but as electricians we have insulation testers so to work out problem is easy, not sure how to work out without test equipment.

Oddly same problem has come up on other forums, but same thing, needs test equipment.

Topic Closed Here. Thank you Eric