Question

In case of a fire, before the firemen hoses, they switch off main electrical supply for the area. Explain why they do this​

Answer 1

Answer:

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.

Answer 2

Water conducts electricity. If water comes in contact with the naked electricic wires, it may harm the firemen. So, the main electrical supply for the area is switched off to prevent any mishappenings.