A Juab County brush fire isn't expected to reach power lines delivering electricity to Southern California and Las Vegas.

In fact, fire crews expect to contain the blaze by Monday night."Things are laying down right now, but you may always have to deal with wind," said U.S. Forest Service spokesman Wallace Shiverdecker.

The lighting-caused fire started Tuesday in a remote range area near Mona and has charred more than 3,200 acres of federally owned land.

The fire has not threatened residential areas, but officials worried flames could spread to the Mona substation and two 345,000-volt lines feeding power to sections of the Los Angeles basin and part of Nevada.

Crews aboard bulldozers cut firebreaks around the substation to keep flames away.

More than 400 firefighters from Idaho, Utah and Oregon have helped battle the blaze.

There have been no injuries.

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