This isn't electrical, but nevertheless provides a good illustration of why some people should not attempt any DIY!
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Tony Leeming of Canvey Island in Sept 99 burned down not just his own home but nine others into the bargain.

He was trying to strip paint from his floorboards with a blowtorch.

With disarming frankness he explained: "I am not a DIY expert", after 60 firemen were called out to fight the blaze in the row of terraced houses.

"Somehow flames got under the boards and started a fire. I never meant to cause all this grief."