Law of torts fire caused by state electricity board to a firewoks fact

Suresh is the owner of a Rangoli Fireworks). One night, there was a short-circuit in the transformer maintained by the State Electricity Board and the transformer caught fire. The transformer was installed on Suresh’s factory premises. Before the fire could be brought under control, it had spread over the adjoining areas and burnt down the houses. Is Rangoli Fireworks liable for the damage caused? Which principle of tort law will be applicable here? Whether State Electricity Board is liable.