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ENERAL INFORMATION
Watts
V
olts x 1.732
W
atts = Amps x Volts
Volts
Watts
2
Commonly Used Formulas
240V 1Ph
Ungrounded
Ungrounded
Grounding
BLACK
RED
GREEN
240
120
Common Service Wire
Configurations
Page 9
120
(
balanced 3 phase)
A
mps =
Watts
Volts
(Single phase)
Amps =
O
hms =
120
ABCNeutral
RED BLACK RED
120
120
208
208 208
208 3Ph
120
ABCNeutral
RED BLACK RED
120
120
240
240 240
240 3Ph
277
ABCNeutral
RED BLACK RED
277
277
480
480 480
480 3Ph/277 1Ph
Full Load Current Amps
208 Volt
1 Ph 3 Ph
6
kW
9
12
13.5
15
18
24
27
30
36
45
54
28.8 16.6
43.2 25.0
57.6 33.3
64.9 37.5
72.1 41.6
86.5 50.0
115.4 66.7
129.8 75.0
144.2 83.3
173.0 100.0
216.3 125.0
259.6 150.0
240 Volt 277 Volt 380 Volt 415 Volt 480 Volt 600 Volt
25.0 14.4
37.2 21.6
50.0 28.9
56.2 32.5
62.5 36.1
75.0 43.4
100.0 57.8
112.5 65.0
125.0 72.2
150.0 86.7
187.5 108.3
225.0 130.0
12.5 7.2
18.7 10.8
25.0 14.4
28.1 16.2
31.2 18.0
37.5 21.6
50.0 28.9
56.2 32.5
62.5 36.1
75.0 43.3
93.7 54.1
112.5 65.0
1 Ph
21.6
32.4
43.3
48.7
54.1
64.0
86.6
97.4
108.3
129.9
162.4
194.9
3 Ph
8.3
12.5
16.7
18.8
20.9
25.0
33.4
37.5
41.7
50.1
62.6
75.1
3 Ph
9.1
13.6
18.2
20.5
22.7
27.3
36.4
41.0
45.6
54.7
68.4
82.0
3 Ph
5.8
8.7
11.5
13.0
14.4
17.3
23.1
26.0
28.9
34.6
43.3
52.0
1 Ph 3 Ph 1 Ph 3 Ph
9