Electrical workers in east China's Jiangsu Province recently performed a stunning walking on high-voltage transmission lines when they were called in to repair a failure in a segment of the power lines. The 50KV transmission lines, suspended 30 meters above the ground, serve as a key channel to the provincial power grid, but a failure was spotted recently that had led to substantial loss of electricity. One worker, dressed in electrical protective clothing, was sent up on line by an aerial lift before he walked toward the faulty part along the power lines. It was the first time in China that a electrical bucket truck was used to deliver electrical workers on the ultra-high voltage direct current (UHVDC) transmission lines. "Through the insulated lift arm of the truck, we can quickly send the worker up on line to fix the failure. It's very efficient since previously the workers had to climb the tower, which was laborious and dangerous," said Zhou Bingling, an engineer of the Jiangsu Electric Power Company.Incredible footage shows power workers walking on wires through the clouds in China. The men were working on the North Zhejiang to Fuzhou power lines to perform safety checks. Engineers have to walk on wires no thicker than bottle caps with only a thin wire on either side to hold on to.