Firefighters on Wednesday battled a small brush fire in the Angeles National Forest near Santa Clarita.
The blaze had consumed about 15 acres. About 100 firefighters and three helicopters had it 80% contained, said Forest Service spokeswoman Dee Dechert.
The fire started about 3:15 p.m. when a transformer burst into flames and ignited the brush beneath it, said Los Angeles County Fire Department spokesman Sammy Padilla.
Also Wednesday, about 50 firefighters put out a 1-acre blaze near the 210 Freeway in the San Fernando Valley, said Los Angeles Fire Department spokesman Ron Myers.