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The only book of its kind on the market today, this guide gives you all essential calculations used in day-to-day electrical construction work—for wiring...lighting and appliance branch circuits...feeders for power and light ...motor circuits...and transformers. Now updated to conform to the latest National Electrical Code, the revised edition features the latest calculations for solving even the most difficult electrical design and installation problems. All calculations are categorized according to equipment type—and sample calculations, applications examples, and worksheets are provided.