Eskom says a preliminary investigation has found two transformers at the Zola substation which caught fire on Wednesday morning were vandalised. The fire disrupted the electricity supply to Dobsonville, Emdeni, Jabulani, Moletsane, Mofolo North, Naledi, Tladi, Zola and Zondi. Eskom said its technicians managed to access the substation after the fire had been extinguished. “Based on the preliminary findings, we can confirm that the fire to the one transformer was caused by vandalism. There is also vandalism to the second transformer, and transformer oil has been stolen,” it said…