In case of fire fireman shut of the main electrical supply?
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It is not safe to repair electrical appliances outdoors during heavy downpour. This is because rain water contains dissolved salts. Therefore, rain water can conduct electricity. The electrician may get electrical shocks while working outdoors during rain.
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As impure water is a good cinductor of electricity.If the main electrical supply is kept on, there are chances that the water may spill over it and the chance to get electric shock increases, also in a commercial building many people ruin during the fire do they may fall over the electricity conducting water and get an tremendous electric shock.
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