Crews still working on restoring power to some outlying communities
This morning's outages were caused by a "sky line", which runs from tower peak to tower peak, on a Hydro One Transmission line falling onto a 230KV powerline, knocking it to the ground, said Wendy Watson, communications officer, in an email.
When that line fell, supply to the GSH Clarabelle Transmission Station was cut off, knocking out power to about half of the GSH customers in Sudbury, including Copper Cliff.
GSH crews and control room operators scrambled to reconfigure the system to safely reroute power to customers. First priority was to resupply Health Sciences North, which was done in nine minutes.
Hydro One customers in outlying areas of the City of Greater Sudbury may still be without power as Hydro One continues work on the problem.
"We ask all customers to conserve electricity as much as possible until the system can be restored to its normal configuration," Watson said. "Our reroutes are 'stop-gap' measures and not as stable as we would like. Conservation will help keep everyone online."
Hydro One said a power interruption put more than 12,000 customers in the dark at around 6:50 a.m. April 4.
It's estimated power will be restored at around 11 a.m.
Affected areas include Blezard Valley, Rayside Balfour, Hanmer and the townships of Waters, Eden, Wisner, Morgan and Snider.
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