The hazard of electrical fires in Canada is a heavily debated topic. I have read this blog that says nearly 20% of such occurrences are due to faulty electrical appliances, improper wiring and irresponsible usage ( http://www.theshockdoctors.ca/blog/general/electrical-fires-in-canada/ ). The only way to deal with the issue is to ensure the safety of electrical units and if any signs point to a problem, definitely consider the help of licensed electrical contractors.