Answer / dipak thumar

Fire wall is provided to avoid spreading of fire from one
transformer to other.

The height of the wall is to be higher(approx. 1.5 times
that of heighest trafo. ) than the height of the
transformers.

Width of the Fire wall is to be minimum 230 mm if it is
brick wall or 150 mm if it is concrete wall.

This is mendetory in india as per IE rules

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