JACKSON HEIGHTS — ConEd crews have cordoned off part of a building after stray voltage was detected there Tuesday night, according to an official.
Stray voltage forced Con Ed to shut down West 93rd Street in February, and it killed a Columbia University graduate student in 2004.
Workers found the stray current before 1 a.m. Tuesday on 74th Street near 37th Avenue, a spokesman said.
Multiple items — a streetlight, fence, curb, gas cap and tree guard — were energized by less than 3 volts of electricity, he said.
Yellow cones and a sign saying: "Warning: Do Not Enter. A possible electrical condition is being investigated. For your safety please keep people and pets away from this area" were placed in front of the building.
The voltage was gone once crews came to repair it around 6:50 a.m., according to the spokesman.
They'll return Wednesday night to monitor the situation, and have cordoned off the site during the day.
It's not clear where the voltage originated, but Con Ed regularly tests more than 770,000 structures around the city, from manholes to underground transformers.
The power company uses hand-held electric-field sensor that locates energized items, according to its website.
