MANY parts of the city plunged into darkness late Wednesday night as a result of a short-circuit in its 69-kv line in Tablon, this city, the Cagayan Electric Power and Light Co. (Cepalco) said. Ralph Paguio, Cepalco senior vice president, said the short-circuit resulted in  a blackout that affected nearly half of the Cepalco franchise area from 11 pm to 2 am. Paguio said what happened was that wire in Barangay Tablon was cut off and hit the 69-kva line, resulting in the short circuit. (nitz arancon)