Description
The examination and interpretation of complex electrical circuits will be taught. Conversion of schematic to ladder diagrams and the sequence of operation of the assigned equipment. Three phase 240/480-volt systems wiring used in the operation and safety controls associated with industrial HVAC/R systems including part winding start, Y-Delta start, across the line start, saftey controls. Capacity control wiring, refrigerant pressure and water flow controls, This includes the NEC compliance, using Chapters 2, 3 and 9.