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FORMULAS & CHARTS
24 hour Rental Hotline: 1-866-667-5544

USEFUL ELECTRICAL FORMULAS
TO OBTAIN SINGLE PHASE * THREE PHASE *
Kilowatts V x I x pf

1000
 1.732 x V x I x pf

1000
kV-A V x I

1000
 1.732 x V x I

1000
Horsepower required when generator
kW unknown (if generator efficiency
is unknown, use 0.93)		 kW

0.716 x Efficiency (Generator)
 kW

0.746 x Efficiency (Generator)
kW input when motor hp known
(if motor efficiency unknown,
use 0.85 x hp)
 hp x 0.746

Efficiency (Motor)
 hp x 0.746

Efficiency (Motor)
Amperes when motor hp known hp x 0.746

V x ph x Efficiency
 hp x 0.746

1.732 x V x pf x Efficiency
Amperes when kW known kW x 1000

V x pf
 kW x 1000

1.732 x V x pf
Amperes when kV-A known kV-A x 1000

V
 kV-A x 1000

1.732 x V
* Alternating Current


80% POWER FACTOR
kW 120 V 208 V 240 V 480 V 600 V 2400 V 4160 V
10 83 A 35 A 42 A 15 A 12 A 3 A 1.7 A
20 167 A 69 A 83 A 30 A 24 A 6 A 3.5 A
30 250 A 104 A 125 A 45 A 36 A 9 A 5.2 A
40 333 A 139 A 167 A 60 A 48 A 12 A 6.9 A
50 417 A 173 A 208 A 75 A 60 A 15 A 8.7 A
75 625 A 260 A 313 A 113 A 90 A 22.6 A 13 A
100 833 A 347 A 417 A 150 A 120 A 30.1 A 17.3 A
125 1042 A 434 A 521 A 188 A 150 A 37.6 A 21.7 A
175 1458 A 607 A 729 A 263 A 210 A 52.6 A 30.4 A
225 1875 A 781 A 938 A 338 A 271 A 67.7 A 39 A
275 2292 A 954 A 1146 A 413 A 331 A 82.7 A 47.7 A
300 2500 A 1041 A 1250 A 451 A 361 A 90.2 A 52 A
350 2917 A 1214 A 1458 A 526 A 421 A 105 A 61 A
400 3333 A 1388 A 1667 A 601 A 481 A 120 A 69 A
500 4167 A 1735 A 2083 A 752 A 601 A 150 A 87 A
600 5000 A 2082A 2500 A 902 A 722 A 180 A 104 A
750 6250 A 2602 A 3125 A 1128 A 902 A 226 A 130 A
900 7500 A 3123 A 3750 A 1353 A 1083 A 271 A 156 A
1250 10417 A 4337 A 5208 A 1879 A 1504 A 376 A 217 A
1500 12500 A 5205 A 6250 A 2255 A 1804 A 451 A 260 A
1750 14583 A 6072 A 7292 A 2631 A 2105 A 526 A 304 A
2000 16667 A 6940 A 8333 A 3007 A 2406 A 601 A 347 A


CABLE SIZE 80-90°C 110°C
2/0 285 A 330 A
4/0 385 A 445 A
313 mcm 480 A 555 A
500 mcm 660 A 765 A
750 mcm 845A 980 A

CONTACT INFORMATION
Telephone:   (416) 667-5758 or 1-877 Cat Power
MaK Marine:   1-877 MaK Power
Rental Hotline:   1-866-667-5544
Fax: (416) 667-5514
Email: info@toromontpowersystems.com
  Main Office:   Concord - Power Division
P.O. Box 5511
3131 Highway 7 West - Bldg. A,
Concord, Ontario, L4K1B7
 

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