Hi cutting a long story short.
An electric hob was blowing the main MCB. Out of interest i rigged it up to my europa plus and ran it through the tests. All hobs on, etc. It passed every test with flying colours and showing it was pulling around 3.4kw.
Why would this happen i would have expected a fail either on IR and/or earth.
Just to be certain i wired it back to the junction box and the MCB blew even with the hobs all in off position.
Cable from MCB to cooker switch ok and from switch to cooker outlet ok. Oven is attached to same cooker outlet and its running fine.
Have i got a problem with my tester, i dont think so as its picking up faults on other equipment, or is there some other explanation