why firement shut off electricity connection of a house which has caught fire??

Fireman switches of electricity in a house which has caught fire because.

  1. Fireman uses water in putting out fires in normal houses, if water from hose falls on electric installations the fireman and other people can get an electric shock as because water conducts electricity.
  2. Keeping electricity turned on may result in further short circuit and thus result in more fire.

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Water may conduct electricity. If the electrical supply for the area is not shut off and water is poured over electrical appliances, then electricity may pass through water and harm the firemen. That is why, in case of a fire, the firemen shut off the main electrical supply for the area before they use the water hoses.

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