Question

In case of any fire before the firemen use the water horses they shut off the main electrical supply for the area explain why they do this

Answer 1

The fireman shut off the main electrical supply before turning on water hoses in order to curb the chances of an electrical shock in case the water comes in contact with a naked wire whose insulation has burned off.

Thanks

Answer 2

Answer:

The water used in water hoses is good conductor of electricity. Firemen shut off the main electrical supply, because if the supply of electricity continues this may be high risk of electrocution due to water.