“The switch gear room had four switch components with oil that was burning intensely. The switch gear room fire affected the substations that provided most parts of Pretoria West with electricity,” he said.He added that the roof and parts of the walls of the switch gear room roof collapsed due to intense heat and an explosion that occurred inside the room.Ten firefighting vehicles and 26 firefighters were deployed to fight the blaze, which was contained to the switch gear room and subsequently extinguished.“One firefighter sustained minor injuries when a fire hose nozzle hit the…