One man has been taken to hospital after a boom truck hit a high-voltage power line in Bedford on Thursday morning, leading to an outage for thousands of Nova Scotia Power customers.

Workers with Irving Equipment and Irving Energy were in the process of moving a commercial size propane tank near the True North Diner at the Bedford Place Mall when the boom truck they were using came into contact with a power line, said the provincial Department of Labour.

"One of the Irving Energy employees had their hand on the tank when the electrical contact was made and received serious but non-life-threatening injuries to the hand," Chrissy Matheson, a spokeswoman for the provincial Department of Labour, said in an emailed statement.

"The worker is in hospital receiving treatment."

Corey Beals, a division commander for Halifax Regional Fire and Emergency, said crews were called to 1658 Bedford Highway at around 7:30 a.m.

Boom truck hits power line in Bedford

Thousands of Nova Scotia Power customers are without electricity in Bedford after a boom truck hit a power line on Thursday morning. (Craig Paisley/CBC)

"We received a call for an electrocution," he told CBC News, adding the man was lying about three metres from a propane tank when firefighters arrived at the scene.

Beals said the boom truck made contact with a line carrying 25,000 volts.

Derek Chase, who lives on River Lane behind the accident scene, said the commotion caused him to look out his window.

"I saw the workmen standing near these propane tanks that they were apparently going to hoist," said Chase.

"They were treating a guy lying on the ground, they did get him to stand up and walked him to a stretcher."

Beals confirmed the man was conscious when firefighters arrived.

"They provided appropriate medical care for that patient and basically waited for the arrival of some Nova Scotia Power technicians to assess the electrical hazards," he said.

Matheson said crews are working to remove the truck safely.

"Safety officials with Irving Equipment are in the process of putting a safe work procedure in place to move the truck so that power can be restored and lines can be fixed in preparation for the expected storm," she wrote.

"The focus is on safety right now and making sure the truck can be moved safely."

Nova Scotia Power cut off electricity to approximately 3,240 customers in the area to deal with the accident.

The outage is affecting the Oakmount Subdivision, the Bedford Place Mall, the Bedford Highway to Hammonds Plains Road, Meadowbrook Drive, Union Street, Rutledge Street and Waterfront Drive.