In Quebec Canada it is not allowed home owners to do their wiring. As an electrician in Winnipeg, I had close calls - sparks when crawling around in an attic, touching a fluorescent with a screwdriver and at the same time touching another bx cable - shorted out - no marretts inside. Sharp bent nmd cable caught fire at a corner, exploding junction box when just removimg a cover. It is very dangerous to go and repair wiring done by unqualified people. A few deaths in Manitoba due to electrical fires.
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