A contractor working in a research lab on the University of Toledo s main campus was hurt yesterday when he fell backward after he suffered an electrical shock while wiring heater ducts in a ceiling, authorities said.

Craig McGrain, 33, an employee of Brint Electric Inc., was treated at Toledo Hospital.

A Toledo fire crew and a UT police officer were dispatched about 9:10 a.m. on reports that someone had received an electrical shock while working at the Research and Technology Complex, 2600 Dorr St.

Upon arrival, the officer found Mr. McGrain in the northeast dock of the building, with a tourniquet on his forearm, conscious but a little shaken up, a police report said.

When he was shocked, Mr. McGrain jumped back off of the ladder and his forearm was caught on a metal duct, causing a laceration to his right forearm, according to the police report.

First Published June 11, 2008, 9:21 a.m.