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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp.
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4.3) AMPERAGE CALCULATIONS
The INPUT VOLTAGE, PHASE, TOTAL POWER RATING, and HEATER
VOLTAGE RATING are used to calculate the amperage.
NOTE: 380-425V heaters are not usually rated for 380-425V. They are usually 208-240V heaters
that have been re-stamped 380-425V and wired in series.
FORMULAS TO CALCULATE AMPERAGE
THREE PHASE SINGLE PHASE
208-240V & 440-600V
380-425V
(using 208-240V heaters)
208-240V &
440-600V
380-425V
(using 208-240V)
Not possible with
odd number of
heaters
DEFINITIONS:
I = Amperage VI = Input Voltage
PT = Total Power Rating VH = Heater Voltage Rating
THREE PHASE AMP DRAW CALCULATIONS (AMPS)
Input Voltage 208 220 230 240 380 400 415 425 440 460 480 550 575 600
LG-10
27.8 29.4 23.1 24.1 16.9 13.4 13.9 14.2 11 11.5 12 8.82 9.22 9.62
LG-15
41.6 36 37.7 39.3 25.4 21.8 22.6 23.2 16.5 17.3 18 13.2 13.8 14.4
LG-20
54.1 46.8 48.9 51.1 33 28.4 29.4 30.1 21.5 22.5 23.5 17.2 18 18.8
LG-25
65.6 69.3 57.6 60.1 39.9 42 34.7 35.5 27.6 28.8 30.1 22.1 23.1 24.1
LG-30
81.2 85.9 67.4 70.4 49.4 39.1 40.6 41.5 32.3 33.7 35.2 25.8 27 28.1
SINGLE PHASE AMP DRAW CALCULATIONS (AMPS)
Input Voltage 208 220 230 240 380 400 415 425 440 460 480 550 575 600
LG-10
48.1 50.9 39.9 41.7 19.1 20 20.8 15.3 16 16.7
LG-15
72.1 62.4 65.2 68.1 28.6 29.9 31.3 22.9 24 25
LG-20
93.8 81.1 84.8 88.5 37.2 38.9 40.6 29.8 31.1 32.5
LG-25
114 120 99.8 104 47.7 49.9 52.1 38.2 39.9 41.7
LG-30
141 149 117 122
Not possible with odd
number of heaters
55.9 58.4 60.9 44.7 46.7 48.8