Answer
unplugging all of the equipment
Explanation
In any fire accidents one should first determine the source and attack there first.
Since the fire is as a result of electrical equipment, the first thing should be to cut out the flow of current.
Water been a good conduct of current is should never be used to out off fire started by electrical equipment.
By blowing or using fun, this would spreed the fire more.
The best answer that suits this question is unplugging all of the equipment.
