Southern California Edison, a unit of utility firm Edison International, on Monday was sued on claims that its electrical equipment started one of the major wildfires raging in the Los Angeles area, according to court filings.

Altadena residents said in separate lawsuits that the utility’s electrical equipment had sparked the fire, which grew to consume 14,000 acres.

The L.A.-area fires may pose the first big test of California’s wildfire fund, which was set up in 2019 to protect utilities from bankruptcy.