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Cloudy with occasional showers. Low 56F. Winds light and variable. Chance of rain 40%..

Cloudy with occasional showers. Low 56F. Winds light and variable. Chance of rain 40%.

Thousands of central coast residents lost power Monday for the third time since May after an interruption of service from a local utlity’s electricity wholesaler.

Central Lincoln People’s Utility District customers from Lincoln Beach to Heceta Head lost power at approximately 3:20 p.m. in calm, sunny weather. The public utility attributed the outage, which for most customers lasted about 10 minutes, to an issue at the Bonneville Power Authority Toledo substation.

Central Lincoln, like many other consumer electrical providers on the coast and in the valley, buys electricity from the BPA’s dams on the Columbia and Snake Rivers via a trans-state network of transmission lines, and carried across the Coast Range to Newport via the Santiam-Toledo line.

In June, another approximately 10-minute outage occurred when a BPA contractor using a jigsaw at the Toledo substation caused enough vibration for a relay’s contact to touch, causing it to trip. And in May, the same wide swath of customers was without power for about an hour after a loose wire made contact and opened a breaker, disconnecting the BPA transmission line from Central’s grid.

Douglas Johnson, senior spokesman for the BPA, said via email Tuesday the cause of the power interruption has not yet been determined.

“While work was being performed at Toledo Substation, a relay unexpectedly tripped equipment out of service, which interrupted power to customers in the area,” Johnson wrote. “Crews were able to quickly fix the problem and restore power. We are investigating the incident to determine why the relay tripped.”

“Crews were able to quickly fix the problem and restore power. We are investigating the incident to determine why the relay tripped.”

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