The man-hour that follow are the product of thousands of dollars spent for time studies and research analysis in this field. We believe that it will decrease the chance of error and allow the partially experienced estimator a greater advantage to more accurately determine the actual direct labor cost for the complete installation of mechanical equipment for a given industrial or chemical plant. This manual continues to be the best source available for making accurate, reliable man-hour estimates for electrical installation. This new edition is revised and expanded to include installation of electrical instrumentation, which is used in monitoring various process systems. Branch, service, and feeder rough-in. Branch, service, and feeder wiring. Wiring devices-switches, outlets, and receptacles. Surface metal raceway and branch bus way. Lighting fixtures. Underfloor ducts. Bus ducts. Electric heating and ventilating. Panel boards and accessories. Switchboards and accessories. Switches, starters, controls, and gutters. Motor control centers. Motor controls and motors. Power transformers. Outside overhead systems. Outside underground systems. Communications and signal systems. Electrical instrument installation. Anchors, fasteners, hangers, and supports. Demolition, excavation, and concrete. Technical information.