An employee was brazing copper lines together on a new air conditioning unit close to an access point in a brick wall, The two wires ran horizontally and copper tubing ran vertically. The heat from the brazing heated up the copper tubing. A wire was touching the copper tubing, causing the wire jacket to melt. The wire infused itself to the copper tubing, which energized the copper pipe. The employee was using a wet towel to cool down the copper tubing when he was electrically shocked, resulting in hospitalization.