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White Rock residents were left in the dark several times Sunday as power outages affected at least 2,430 people.
The outages began at 7:33 a.m., when on-call Department of Public Utilities electric linemen investigated and discovered a fault in an underground cable near Piedra Loop.
According to a press release from the DPU, engineering analyses and a review of data logs, the DPU’s switchboard recognized the 7:33 a.m. fault accurately and remained closed. However, the switchgear for the 115 KV high voltage transmission feed to White Rock, configured by Los Alamos National Laboratory, responded to the fault by opening.
The resulting effect was that power to the entire White Rock townsite was shut down.
Los Alamos and White Rock usually have two 115 KV high voltage transmission lines serving the county, which provide redundancy in the event of service interruption. However, the Norton Line has been out of service since August as the structures crossing San Ildefonso Pueblo are replaced by crews from LANL.
The construction period is expected to extend into December, and the Reeves Line, remaining feed to White Rock, has been reconfigured.
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