This picture taken on July 26, 2015 shows a child playing in a fountain on a square to cool himself amid a heatwave in Binzhou, eastern China's Shandong province.   CHINA OUT     AFP PHOTO        (Photo credit should read STR/AFP/Getty Images)
What NOT to do in a heat wave
01:14 - Source: CNN
CNN  — 

Three days after a heat wave brought record-setting temperatures to Los Angeles, thousands of residents remain without power, but officials say crews are nearing full restoration.

As of Monday afternoon, at least 1,900 customers were still without power in the Los Angeles area due to high demand, the Los Angeles Department of Water and Power, or LADWP, said in its 4:30 p.m. update.

Sunday evening, as many as 26,500 of the utility’s 1.5 million customers had no power.

Crews have restored power to nearly all residents of Koreatown, which LADWP said was the most affected area. Monday afternoon, 103 customers were without power, down from over 7,000 earlier.

In the Metro Los Angeles area, East Hollywood had about 900 customers without power and Silver Lake had about 100 customers without power on Monday afternoon.

LADWP said that “continued overloading of circuits has slowed the restoration progress and led to recurring outages in some neighborhoods.”

It asked that customers reduce their electricity use in the afternoon and evening hours, specifically between 2 p.m. and 9 p.m., and refrain from using appliances like clothes washers and dryers until 9 p.m.

Residents could expect their power cuts to last 24-48 hours, LADWP said.

A high of 92 degrees is forecast for Monday, and then temperatures should drop into the 80s for most of the rest of the week.

Record-breaking heat

Scorching heat descended upon California and parts of the Southwest after a heat wave swept across Canada earlier in the week, killing dozens in the province of Quebec, according to Canadian health officials.

Many areas in California on Friday broke their daily high temperature records, according to CNN meteorologists. Downtown Los Angeles reached a high of 108 degrees, breaking its previous daily record of 94 degrees, which was set in 1992.

UCLA, where thermometers read 111 degrees, broke its previous daily temperature record.

The peak energy demand level on Friday was 6,256 megawatts, LADWP said, a record for a day in July, beating the previous record of 6,165 megawatts, set on July 24, 2006.

The heat is also exacerbating conditions fueling wildfires in California, which have claimed one life and forced hundreds to evacuate from their homes.

CNN’s Amir Vera contributed to this report.