The explosions started after a truck crashed into a utility pole, causing a surge around 8:30 a.m. on Monday morning. Neighbors in the South Stockton area described it as a large pop, a bomb going off, and strong enough to shake a house.
“The neighbor across the street, his meter doesn’t look as bad but his receptacles are all blackened.”
PG&E says a dump truck crashed near its Alpine substation on Arch Road. When the truck hit the utility pole, the top wire fell onto the bottom wire, creating a power surge.
“The top lines are considered our freeways. The bottom lines are our distribution lines taking power directly to homes,” said PG&E spokeswoman Brandi Ehlers. “So when the two collide, they’re at different voltages and the higher voltage wins out, causing an overload.”