Transcription of Basic Electrical Power Fundamentals - US Forest Service
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Basic Electrical Power Fundamentals - US Forest Service
Basic Electrical Power Fundamentals LOAD REFERENCE Kilowatts Kilovolt amps Power Factor PF Motors KW KVA USE NEC 430-148 KW < KVA . and 430-150 to find current for given HP Indancescant Lighting USE actual wattage KW = KVA Fluorescent Lighting USE 50VA per 4 foot KW < KVA
KVA is apparent power, is always greater than or equal to KW and is the product of volts x amps 1 phase, volts x amps x , √3, 3 phase. USE KVA for calculations unless load is resistive, (ie. unit heaters, furnaces) then KVA = KW. 6/14/02 Chapter 2: Basic Electrical Power Fundamentals 4/6
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