Source 1 Product Catalog 2017 Page 439 Index & Information

439 FORMULAS - ELECTRICAL VOLTS = Amps x Ohms Watts Watts x Ohms Amps AMPS = Volts Watts Ohm Volts Ohms WATTS = Volts x Amps Amps 2 x Ohms Volts 2 Ohms OHMS = Volts 2 Watts Amps Watts Amps 2 Power Factor = KW = Cos KVA Single Phase Three Phase KW = A x PF 3 x V x A x PF 1000 KVA = V x A 3 x V x A 1000 Amps = KVA X 1000 KVA x 1000 V 3 x V 3 = 1.73 Approx. Motor KVA = Motor Horsepower (At Full Load) Capacitors Connected in Parallel C 1 +C 2 +C 3 = C Total Capacitors Connected in Series For Two More Than Two C 1 x C 2 = C Total 1_____ = C Total C 1 x C 2 1 + 1 + 1 C 2 C 2 C 2 VOLTAGE UNBALANCE % Voltage Unbalance = 100 x Max Voltage Deviation from Average Voltage Average Voltage BOOST TRANS: Rating Plate F.L.A. x Rating Plate VOLTS - KVA Rating Plate VOLTS = FACTOR Rating Plate VOLTS - Norm. Line VOLT KVA = TRANS. KVA RATING FACTOR V 2 2 X Heater Rating = Rating @ New Voltage V 1 = Rated Volts V 2 = Measured Volts Typical Ampere Wire Ratings* Copper Conductors, in Conduit* AWG MCM TEMP RATING OF CONDUCTOR 60C* 75C* 90C* 14 15 25 12 20 30 10 30 40 8 40 45 50 6 55 65 70 4 70 85 90 3 80 100 105 2 95 115 120 1 110 130 140 1/0 125 150 155 2/0 145 175 185 3/0 165 200 210 4/0 195 230 235 250 215 255 270 300 240 285 300 350 260 310 325 400 280 335 360 500 320 380 405 600 355 420 455 700 385 460 490 750 400 475 500 800 410 490 515 900 435 520 555 1000 455 545 585 1250 495 590 645 1500 520 625 700 1750 545 650 735 2000 560 665 775 *Summary only, refer to NEC 310-16, -17, -18, -19 (and others) for limitations. Typical Electric Wire Size MOTOR HP SINGLE PH. THREE PH. 115 VOLT 230 VOLT 230 VOLT 460 VOLT 1-1/3 14 1/2 14 3/4 12 14 1 12 14 1-1/2 10 14 2 12 14 3 10 14 5 12 14 7-1/2 10 14 10 8 12 From Standards of the National Board of Fire Underwriters. Correction Table For Watts - Amperes - Volts WATTS VOLTAGE (C - SINGLE PHASE) 120 208 240 277 AMPERES 500 4.2 2.4 2.1 1.8 1000 8.3 4.8 4.2 3.6 1500 12.5 7.2 6.3 5.4 2000 16.7 9.6 8.3 7.2 2500 20.9 12.0 10.4 9.0 3000 25.0 14.4 12.5 10.8

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