More than 500 residents in El Cajon and Fletcher Hills were left without power Thursday morning after a semi-truck slammed into a power pole and sheared a fire hydrant.
The crash happened just before 6 a.m. at Vernon Way and Marshall Avenue near several businesses.
Water from the sheared hydrant filled the street. A power pole was also struck in the accident.
Due to the water spewing from the hydrant, first-responders had to use caution when accessing the power pole to avoid electrocution, officials said, until power could be safely turned off.
One power was shut off, SDG&E said at least 521 customers were left without electricity. The utility expected power to be restored to customers by 11 a.m. Thursday.
By 12 p.m., about 40 customers remained without power; SDG&E said power was expected to be restored by 6 p.m. to the remainder of those impacted.
No injuries were reported.