>>
>> Thanks FT. I did some more Googling and found somebody who suggested that crumbs on
>> the element could be to blame.
>>
>> I was very suspicious, but duly took it outside and shook it and blew on
>> all the elements and, lo and behold, it works fine! :)
>>
I guess that there's enough to cause a slight leak to earth - enough to trip the RCD
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