GENERATOR AMP RATINGS - THREE PHASE EXTENDED

3 PHASE AMPERES -  80% POWER FACTOR*  (Extended Table)

kW Times 1000 divided by (Volts*1.73) *.80

This chart approximates the amperage of a generator based on the size of the generator and the load on the generator at 100 percent of capacity.  Please note that this table is intended to be used as an estimator is not an exact representation due to various factors that can increase or decrease amperage. Elevation, temperature, fuel quality, age, wire size and length and other factors can decrease the amount of power a specific installation can generate.

kVA kW 120 208 220 240 277 380 400 416 440 450 480 600 2400 3300 4160 11000 13800
5 4 24.1 13.9 13.1 12.0 10.4 7.6 7.2 6.9 6.6 6.4 6.0 - - - - - -
6 5 30.1 17.4 16.4 15.1 13.0 9.5 9.0 8.7 8.2 8.0 7.5 - - - - - -
9 7 42.1 24.3 23.0 21.1 18.3 13.3 12.6 12.2 11.5 11.2 10.5 - - - - - -
11 9 54.2 31.3 29.6 27.1 23.5 17.1 16.3 15.6 14.8 14.5 13.5 - - - - - -
13 10 60.2 34.7 32.8 30.1 26.1 19.0 18.1 17.4 16.4 16.1 15.1 - - - - - -
15 12 72.3 41.7 39.4 36.1 31.3 22.8 21.7 20.8 19.7 19.3 18.1 - - - - - -
19 15 90.3 52.1 49.3 45.2 39.1 28.5 27.1 26.1 24.6 24.1 22.6 - - - - - -
20 16 96.3 55.6 52.5 48.2 41.7 30.4 28.9 27.8 26.3 25.7 24.1 - - - - - -
25 20 120.4 69.5 65.7 60.2 52.2 38.0 36.1 34.7 32.8 32.1 30.1 - - - - - -
31 25 150.5 86.8 82.1 75.3 65.2 47.5 45.2 43.4 41.1 40.1 37.6 - - - - - -
38 30 180.6 104.2 98.5 90.3 78.3 57.0 54.2 52.1 49.3 48.2 45.2 - - - - - -
44 35 210.7 121.6 115.0 105.4 91.3 66.6 63.2 60.8 57.5 56.2 52.7 - - - - - -
50 40 240.8 139.0 131.4 120.4 104.3 76.1 72.3 69.5 65.7 64.2 60.2 48.2 12.0 8.8 6.9 - -
56 45 271.0 156.3 147.8 135.5 117.4 85.6 81.3 78.2 73.9 72.3 67.7 54.2 13.5 9.9 7.8 - -
63 50 301.1 173.7 164.2 150.5 130.4 95.1 90.3 86.8 82.1 80.3 75.3 60.2 15.1 10.9 8.7 - -
69 55 331.2 191.1 180.6 165.6 143.5 104.6 99.3 95.5 90.3 88.3 82.8 66.2 16.6 12.0 9.6 - -
75 60 361.3 208.4 197.1 180.6 156.5 114.1 108.4 104.2 98.5 96.3 90.3 72.3 18.1 13.1 10.4 - -
80 65 391.4 225.8 213.5 195.7 169.5 123.6 117.4 112.9 106.7 104.4 97.8 78.3 19.6 14.2 11.3 - -
88 70 421.5 243.2 229.9 210.7 182.6 133.1 126.4 121.6 115.0 112.4 105.4 84.3 21.1 15.3 12.2 - -
94 75 451.6 260.5 246.3 225.8 195.6 142.6 135.6 130.3 123.2 120.4 112.9 90.3 22.6 16.4 13.0 - -
100 80 481.7 277.9 262.7 240.8 208.7 152.1 144.5 139.0 131.4 128.5 120.4 96.3 24.1 17.5 13.9 5.3 4.2
106 85 511.8 295.3 279.2 255.9 221.7 161.6 153.5 147.6 139.6 136.5 128.0 102.4 25.6 18.6 14.8 5.6 4.5
113 90 541.9 312.6 295.6 271.0 234.8 171.1 162.6 156.3 147.8 144.5 135.5 108.4 27.1 19.7 15.6 5.9 4.7
125 100 602.1 347.4 328.4 301.1 260.8 190.1 180.6 173.7 164.2 160.6 150.5 120.4 30.1 21.9 17.4 6.6 5.2
138 110 662.3 382.1 361.3 331.2 286.9 209.2 198.7 191.1 180.6 176.6 165.6 132.5 33.1 24.1 19.1 7.2 5.8
144 115 692.4 399.5 377.7 346.2 300.0 218.7 207.7 199.7 188.8 184.6 173.1 138.5 34.6 25.2 20.0 7.6 6.0
150 120 722.5 416.9 394.1 361.3 313.0 228.2 216.8 208.4 197.1 192.7 180.6 144.5 36.1 26.3 20.8 7.9 6.3
156 125 752.6 434.2 410.5 376.3 326.1 237.7 225.8 217.1 205.3 200.7 188.2 150.5 37.6 27.4 21.7 8.2 6.5
163 130 782.8 451.6 427.0 391.4 339.1 247.2 234.8 225.8 213.5 208.7 195.7 156.6 39.1 28.5 22.6 8.5 6.8
175 140 843.0 486.3 459.8 421.5 365.2 266.2 252.9 243.2 229.9 224.8 210.7 168.6 42.1 30.7 24.3 9.2 7.3
188 150 903.2 521.1 492.6 451.6 391.3 285.2 271.0 260.5 246.3 240.8 225.8 180.6 45.2 32.8 26.1 9.9 7.9
194 155 933.3 538.4 509.1 466.6 404.3 294.7 280.0 269.2 254.5 248.8 233.3 186.7 46.7 33.9 26.9 10.2 8.1
kVA kW 120 208 220 240 277 380 400 416 440 450 480 600 2400 3300 4160 11000 13800
206 165 993.5 573.2 541.9 496.7 430.4 313.7 298.0 286.6 271.0 264.9 248.4 198.7 49.7 36.1 28.7 10.8 8.6
213 170 1023.6 590.5 558.3 511.8 443.4 323.2 307.1 295.3 279.2 273 255.9 204.7 51.2 37.2 29.5 11.2 8.9
219 175 1053.7 607.9 574.8 526.9 456.5 332.8 316.1 304.0 287.4 281 263.4 210.7 52.7 38.3 30.4 11.5 9.2
225 180 1083.8 625.3 591.2 541.9 469.5 342.3 325.1 312.6 295.6 289 271.0 216.8 54.2 39.4 31.3 11.8 9.4
238 190 1144.0 660.0 624.0 572.0 495.6 361.3 343.2 330.0 312.0 305.1 286.0 228.8 57.2 41.6 33.0 12.5 9.9
250 200 1204.2 694.8 656.9 602.1 521.7 380.3 361.3 347.4 328.4 321.1 301.1 240.8 60.2 43.8 34.7 13.1 10.5
275 220 1324.7 764.2 722.5 662.3 573.9 418.3 397.4 382.1 361.3 353.2 331.2 264.9 66.2 48.2 38.2 14.5 11.5
288 230 1384.9 799.0 755.4 692.4 599.9 437.3 415.5 399.5 377.7 369.3 346.2 277.0 69.2 50.4 39.9 15.1 12.0
300 240 1445.1 833.7 788.2 722.5 626.0 456.3 433.5 416.9 394.1 385.4 361.3 289.0 72.3 52.5 41.7 15.8 12.6
313 250 1505.3 868.4 821.1 752.6 652.1 475.4 451.6 434.2 410.5 401.4 376.3 301.1 75.3 54.7 43.4 16.4 13.1
325 260 1565.5 903.2 853.9 782.8 678.2 494.4 469.7 451.6 427.0 417.5 391.4 331.2 78.3 56.9 45.2 17.1 13.6
344 275 1655.8 955.3 903.2 827.9 717.3 522.9 496.7 477.6 451.6 441.6 414.0 313.1 82.8 60.2 47.8 18.1 14.4
363 290 1746.1 1007.4 952.4 873.1 756.5 551.4 523.8 503.7 476.2 465.6 436.5 349.2 87.3 63.5 50.4 19.0 15.2
375 300 1806.4 1042.1 985.3 903.2 782.5 570.4 541.9 521.1 492.6 481.7 451.6 361.3 90.3 65.7 52.1 19.7 15.7
438 350 2107.4 1215.8 1149.5 1053.7 913.0 665.5 632.2 607.9 574.8 562.0 526.9 421.5 105.4 76.6 60.8 23.0 18.3
500 400 2408.5 1389.5 1313.7 1204.2 1043.4 760.6 722.5 694.8 656.9 642.3 602.1 481.7 120.4 87.6 69.5 26.3 20.9
563 450 2709.5 1563.2 1477.9 1354.8 1173.8 855.6 812.9 781.6 739.0 722.5 677.4 541.9 135.5 98.5 78.2 29.6 23.6
625 500 3010.6 1736.9 1642.1 1505.3 1304.2 950.7 903.2 868.4 821.1 802.8 752.6 602.1 150.5 109.5 86.8 32.8 26.2
688 550 3311.7 1910.6 1806.4 1655.8 1434.7 1045.8 993.5 955.3 903.2 883.1 827.9 662.3 165.6 120.4 95.5 36.1 28.8
750 600 3612.7 2084.3 1970.6 1806.4 1565.1 1140.9 1083.8 1042.1 985.3 963.4 903.2 722.5 180.6 131.4 104.2 39.4 31.4
813 650 3913.8 2257.9 2134.8 1956.9 1695.5 1235.9 1174.1 1129.0 1067.4 1043.7 978.4 782.8 195.7 142.3 112.9 42.7 34.0
875 700 4214.8 2431.6 2299.0 2107.4 1825.9 1331.0 1264.5 1215.8 1149.5 1124.0 1053.7 843.0 210.7 153.3 121.6 46.0 36.7
938 750 4515.9 2605.3 2463.2 2257.9 1956.3 1426.1 1354.8 1302.7 1231.6 1204.2 1129.0 903.2 225.8 164.2 130.3 49.3 39.3
1000 800 4817.0 2779.0 2627.4 2408.5 2086.8 1521.9 1445.1 1389.5 1313.7 1284.5 1204.2 963.4 240.8 175.2 139.0 52.5 41.9
1125 900 5419.1 3126.4 2955.9 2709.5 2347.6 1711.3 1625.7 1563.2 1477.9 1445.1 1354.8 1083.8 271.0 197.1 156.3 59.1 47.1
1250 1000 6021.2 3473.8 3284.3 3010.6 2608.5 1901.4 1806.4 1736.9 1642.1 1605.7 1505.3 1204.2 301.1 219.0 173.7 65.7 52.4
1563 1250 7526.5 4342.2 4105.4 3763.2 3260.6 2376.8 2257.9 2171.1 2052.7 2007.1 1881.6 1505.3 376.3 273.7 217.1 82.1 65.4
1875 1500 9031.8 5210.6 4926.4 4515.9 3912.7 2852.1 2709.5 2605.3 2463.2 2408.5 2257.9 1806.4 451.6 328.4 260.5 98.5 78.5
2188 1750 - - 5747.5 5268.5 4564.8 3327.5 3161.1 3039.5 2873.8 2809.9 2634.3 2107.4 526.9 383.2 304.0 115.0 91.6
2500 2000 - - 6568.6 6021.2 5216.9 3802.9 3612.7 3473.8 3284.3 3211.3 3010.6 2408.5 602.1 437.9 347.4 131.4 104.7
2812 2250 - - 7389.6 6773.8 5869.0 4278.2 4064.3 3908.0 3694.8 3612.7 3386.9 2709.5 677.4 492.6 390.8 147.8 117.8
3130 2500 - - 8210.7 7526.5 6521.1 4753.6 4515.9 4342.2 4105.4 4014.1 3763.2 3010.6 752.6 547.4 434.2 164.2 130.9
3750 3000 - - 9852.9 9031.8 7825.4 5704.3 5419.1 5210.6 4926.4 4817.0 4515.9 3612.7 903.2 656.9 521.1 197.1 157.1
4375 3500 - - 11495.0 10537.1 9129.6 6655.0 6322.3 6079.1 5747.5 5619.8 5268.5 4214.8 1053.7 766.3 607.9 229.9 183.3
5000 4000 - - 13137.2 12042.4 10433.8 7605.7 7225.4 6947.5 6568.6 6422.6 6021.2 4817.0 1204.2 875.8 694.8 262.7 209.4
kVA kW 120 208 220 240 277 380 400 416 440 450 480 600 2400 3300 4160 11000 13800

3 PHASE AMPERES -  80% POWER FACTOR*  (Extended Table)

kW Times 1000 divided by (Volts*1.73) *.80

*All values shown are approximate.


GENERATOR AMP RATINGS - SINGLE PHASE EXTENDED

PHASE AMPERES -  100% POWER FACTOR*  (Extended Table)

(kW Times 1000) divided by Volts

kVA kW 120 240
1 1 8.3 4.2
3 2 16.7 8.3
4 3 25.0 12.5
5 4 33.3 16.7
6 5 41.7 20.8
8 6 50.0 25.0
9 7 58.3 29.2
10 8 66.7 33.3
11 9 75.0 37.5
13 10 83.3 41.7
14 11 91.7 45.8
15 12 100.0 50.0
16 13 108.3 54.2
18 14 116.7 58.3
19 15 125.0 62.5
20 16 133.3 66.7
21 17 141.7 70.8
23 18 150.0 75.0
24 19 158.3 79.2
25 20 166.7 83.3
26 21 175.0 87.5
28 22 183.3 91.7
29 23 191.7 95.8
30 24 200.0 100.0
31 25 208.3 104.2
33 26 216.7 108.3
34 27 225.0 112.5
35 28 233.3 116.7
36 29 241.7 120.8
38 30 250.0 125.0
39 31 258.3 129.2
40 32 266.7 133.3
41 33 275.0 137.5
43 34 283.3 141.7
44 35 291.7 145.8
45 36 300.0 150.0
46 37 308.3 154.2
48 38 316.7 158.3
49 39 325.0 162.5
50 40 333.3 166.7
51 41 341.7 170.8
53 42 350.0 175.0
54 43 358.3 179.2
55 44 366.7 183.3
56 45 375.0 187.5
58 46 383.3 191.7
59 47 391.7 195.8
60 48 400.0 200.0
61 49 408.3 204.2
63 50 416.7 208.3
64 51 425.0 212.5
65 52 433.3 216.7
66 53 441.7 220.8
68 54 450.0 225.0
69 55 458.3 229.2
70 56 466.7 233.3
71 57 475.0 237.5
73 58 483.3 241.7
74 59 491.7 245.8
75 60 500.0 250.0
76 61 508.3 254.2
78 62 516.7 258.3
79 63 525.0 262.5
80 64 533.3 266.7
81 65 541.7 270.8
83 66 550.0 275.0
84 67 558.3 279.2
85 68 566.7 283.3
86 69 575.0 287.5
88 70 583.3 291.7
89 71 591.7 295.8
90 72 600.0 300.0
91 73 608.3 304.2
93 74 616.7 308.3
94 75 625.0 312.5
95 76 633.3 316.7
96 77 641.7 320.8
98 78 650.0 325.0
99 79 658.3 329.2
kVA kW 120 240
100 80 666.7 333.3
101 81 675.0 337.5
103 82 683.3 341.7
104 83 691.7 345.8
105 84 700.0 350.0
106 85 708.3 354.2
108 86 716.7 358.3
109 87 725.0 362.5
110 88 733.3 366.7
111 89 741.7 370.8
113 90 750.0 375.0
114 91 758.3 379.2
115 92 766.7 383.3
116 93 775.0 387.5
118 94 783.3 391.7
119 95 791.7 395.8
120 96 800.0 400.0
121 97 808.3 404.2
123 98 816.7 408.3
124 99 825.0 412.5
125 100 833.3 416.7
126 101 841.7 420.8
128 102 850.0 425.0
129 103 858.3 429.2
130 104 866.7 433.3
131 105 875.0 437.5
133 106 883.3 441.7
134 107 891.7 445.8
135 108 900.0 450.0
136 109 908.3 454.2
138 110 916.7 458.3
139 111 925.0 462.5
140 112 933.3 466.7
141 113 941.7 470.8
143 114 950.0 475.0
144 115 958.3 479.2
145 116 966.7 483.3
146 117 975.0 487.5
148 118 983.3 491.7
149 119 991.7 495.8
150 120 1000.0 500.0
151 121 1008.3 504.2
153 122 1016.7 508.3
154 123 1025.0 512.5
155 124 1033.3 516.7
156 125 1041.7 520.8
158 126 1050.0 525.0
159 127 1058.3 529.2
160 128 1066.7 533.3
161 129 1075.0 537.5
163 130 1083.3 541.7
164 131 1091.7 545.8
165 132 1100.0 550.0
166 133 1108.3 554.2
168 134 1116.7 558.3
169