Electricians Calculations ManualThis is a calculations book aimed at working electricians and those attempting to pass the Electrician’s Exam. Like nothing currently on the market, this manual details and annotates key calculations electricians use in the field. Electricians can either learn the underpinnings of the calculation or simply “plub and chug” their way through the problem. A final chapter provides the basics of the algebra and trigonometry used throughout the book, and a wealth of self-tests are also included. |
Contents
Direct Current Calculations 5 58 | 5 |
CHAPTER 2 Alternating Current Calculations | 27 |
Transformers | 49 |
Copyright | |
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2KIL 40 horsepower 50 amperes 90 degree air conditioning ampacity amperage angle Appliance circuits 1500 Article bender branch circuit short breaker cable circuit and ground-fault circuit short circuit clothes dryers conduit control circuit cooktop cosecant decimal degree bend degree offset delta demand factor denominator derated developed length Dishwasher divided duty cycle E₁ E₂ equal sign equipment equipment-grounding conductor example feeder Figure fixed appliances four-wire fraction full load current Garbage disposal heating hypotenuse I₁ inches kvars Laundry circuit mark multifamily dwelling multiply nameplate rating National Electrical Code neutral load ohm ww optional calculation Oven overcurrent device parallel power factor protection R₁ R₂ radius recreational vehicle resistors single phase sq ft square feet square foot stub subtract three-phase load transformer triangle ungrounded conductors unit volt amperes voltage drop Water heater wattage watts watts per sq watts per square welders wire