Electricians Calculations Manual
This 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.
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DIRECT CURRENT CALCULATIONS
ALTERNATING CURRENT CALCULATIONS
8 other sections not shown
2KIL 30 degree 40 horsepower 50 amperes air conditioning ampacity amperage angle Article bender branch circuit short cable circuit and ground-fault circuit short circuit clothes dryers column control circuit cooktop cosecant decimal degree bend degree offset delta demand factor denominator derated developed length Dishwasher divided duty cycle equal sign equipment equipment-grounding conductor example feeder Figure fixed appliances four-wire fraction full load current Garbage disposal heating high leg hypotenuse inches kvars largest motor Laundry circuit lighting and receptacle multifamily dwelling multiply nameplate rating National Electrical Code needed neutral load ohms optional calculation Oven overcurrent device overload parallel phase to ground power factor raceway radius recreational vehicle resistors single phase single-family dwelling 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 windings wire