Edisons Power Lines Were Under Strain 14 Hours Before Eaton Fire

About 14 hours before the Eaton fire started on Jan.7 on the hills above Altadena and Pasadena, Calif., power lines in the area appear to have come under strain from intensifying winds.New data from a company that maintains electrical sensors suggests that the transmission network of Southern California Edison was stressed long before the most severe winds bore down on the Los Angeles region, adding to growing criticism that the electric utility did not do enough to prevent the blaze.

Edison is already under review as the possible cause of the Eaton fire, which fire killed 17 people and destroyed more than 9,400 buildings.The data comes from Whisker Labs, a technology company in Maryland, and suggests there were faults, or electrical malfunctions, on Edison’s transmission lines at 4:28 a.m.and 4:36 a.m.

on the day of the fire.Winds speeds at the time were sustained at 60 miles per hour, with gusts as high as 79 m.p.h., — strong enough for engineers to consider cutting power.Later in the day, Whisker identified two faults just minutes before the fire started, at about 6:11 p.m., on the transmission network near Eaton Canyon, where fire investigators have said the Eaton Fire began.

Those faults matched flashes on the transmission lines recorded by a video camera at a nearby Arco gas station.Southern California Edison, which supplies power to several communities near Eaton Canyon, including Altadena, did not cut power to the transmission lines despite the early morning faults.Nor did the utility cut power on the transmission lines after the second set of faults in the evening when winds reached 100 m.p.h....