Con Edison says a damaged underground cable is to blame for stray voltage on a part of Sixth Avenue in Manhattan on Wednesday.
A utility spokesman says one of the company's trucks, which scan the city looking for stray charges, picked up a reading at 4 a.m. on the east side of Sixth Avenue between 26th Street and 27th Street in Chelsea.
At first, it was just affecting one grate, but because of rain, the energized area expanded to include more grates and doorknobs.
The street was closed off as crews worked to fix the cable, but has since reopened.
Con Ed says it's a common problem during this time of year, when moisture and road salt can seep underground and eat away at wires.
Earlier this week, a dog in TriBeCa suffered an electrical shock from a sidewalk grate.
Con Ed uses trucks to scan the streets for stray voltage.
Con Ed says that the number of stray voltage incidents has dropped significantly in the past few years because of new policies and procedures.