Power was restored to about 1,150 homes in an Anaheim neighborhood Sunday night after an hourlong outage, officials said.
As of 10 p.m., about 100 to 150 were still without power and were expected to remain so for four to six hours, according to Ruth Ruiz, spokeswoman for Anaheim Public Utilities.
The outage was caused by mylar balloons that came into contact with power lines near the intersection of North Evergreen Street and East Romneya Drive (map), causing a transformer to blow, Ruiz said.
At least three power lines were toppled as a result of the small explosion, the utility said. One of the electrical lines burned the hood of a car.
Work crews later de-energized all of the downed power lines, according to Ruiz.