The only book of its kind on the market today, this invaluable handbook gives you every essential calculation used in day-to-day electrical construction work - for wiring ... lighting and appliance branch circuits ... feeders for power and light ... motor circuits ... and transformers. With more than 350 detailed illustrations, this updated handbook will enable anyone involved in the electrical construction industry to determine the most efficient and cost-effective approach to the design, layout, installation, operation, and maintenance of electric circuits, systems, and equipment.