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You think motors are tough? Motors ain’t nothing compared to the Yoder. Consider the Yoder Tube Welding Transformer. This baby packs a 150 kVA punch with its 480 Volt Primary and 4 Volt secondary. It produces about 21,739 Amps of welding current. The Yoder Transformer is part of a steel tube making machine, AKA Tube Mill. If you have steel tubular fence posts, a metal play set for your kids or a tailpipe on your car, this Yoder Transformer probably welded the seams. Tube is formed from flat steel through a series of dies over several feet. The round tube seam is then resistance welded by this transformer. The current from the transformer secondary melts the seam together. The transformer has two welding wheels acting like electrodes that ride on the tube as it whizzes through the mill. Rebuilding one of these machines takes experience in all of these areas: winding, welding, insulating, machining, plumbing, mathematics, bearings, slip rings, brushes, core stacking, testing and patience. Where do you find this experience? At the Indy Transformer Shop.