Train delays likely for Friday PM rush SYDNEY rail commuters can expect a long trip home on Friday after problems with overhead wiring at Normanhurst caused chaos on the CityRail network. Commuters going to the CBD were delayed on Friday morning after a train brought down overhead wiring in the city's northwest around 5.30am (AEDT). Buses were running between Hornsby and Epping stations as RailCorp scrambled to repair the wires. RailCorp's operations director, Tony Eid, said trains would be operating northbound on the Northern line in time for Friday afternoon's peak hour. But commuters could expect delays. "We are telling people that because of the delays through the day, and the extra trains in the area, there will be congestion," Mr Eid told AAP. He said the Northern line would remain closed to citybound trains until around 8am on Saturday. The wiring incident was being investigated and its cause had not yet been determined, he added. Earlier, Premier Barry O'Farrell described the delays as "unacceptable." "I understand as someone who represents an electorate with many railway stations just how important rail transport is to this city and what's happening is unacceptable," Mr O'Farrell told Macquarie Radio. Transport Minister Gladys Berejiklian said the safety of customers and staff was the government's top priority. She conceded the problem seemed to be "similar to previous incidents." She said she'd been advised that in recent weeks every CityRail train had been inspected, as well as the section of track concerned. A major reform of Sydney's rail network was underway, she added.