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Table 4 Suggested minimum input wire size data
kVA
Input
Voltage
Units with Transformers Transformerless Units
Input
FLA
Input
OPD
Suggested Feeder
Wire Size (AWG)
Full Load
Amps
MIB Trip
Amps
Suggested Feeder
Wire Size (AWG)
15
208 43 60 #6 AWG 42 60 #6 AWG
240 38 50 #8 AWG - - -
380 24 30 #10 AWG 23 30 #10 AWG
400 23 30 #10 AWG 22 30 #10 AWG
415 22 30 #10 AWG 21 30 #10 AWG
480 19 25 #10 AWG - - -
600 15 20 #12 AWG - - -
30
208 87 110 #2 AWG 83 110 #2 AWG
240 75 100 #2 AWG - - -
380 48 60 #6 AWG 46 60 #6 AWG
400 45 60 #6 AWG 43 60 #6 AWG
415 44 60 #6 AWG 42 60 #6 AWG
480 38 50 #8 AWG - - -
600 30 40 #8 AWG - - -
50
208 145 200 #3/0 AWG 139 175 #2/0 AWG
240 125 175 #2/0 AWG - - -
380 79 100 #2 AWG 76 100 #2 AWG
400 75 100 #2 AWG 72 90 #2 AWG
415 72 90 #2 AWG 70 90 #2 AWG
480 63 80 #4 AWG - - -
600 50 70 #4 AWG - - -
75
208 215 300 350 kcmil 208 300 350 kcmil
240 186 250 250 kcmil - - -
380 118 150 #1/0 AWG 114 150 #1/0 AWG
400 112 150 #1/0 AWG 108 150 #1/0 AWG
415 108 150 #1/0 AWG 104 150 #1/0 AWG
480 93 125 #1 AWG - - -
600 74 100 #2 AWG - - -
100
208 286 400 (2) #3/0 AWG * 278 350 (2) #2/0 AWG *
240 248 350 (2) #2/0 AWG * - - -
380 157 200 #3/0 AWG 152 200 #3/0 AWG
400 149 200 #3/0 AWG 144 200 #3/0 AWG
415 143 200 #3/0 AWG 139 175 #2/0 AWG
480 124 175 #2/0 AWG - - -
600 99 125 #1 AWG - - -
125
208 358 450 (2) #4/0 AWG * 347 450 (2) #4/0 AWG *
240 310 400 (2) #3/0 AWG * - - -
380 196 250 250 kcmil 190 250 250 kcmil
400 186 250 250 kcmil 180 225 #4/0 AWG
415 179 225 #4/0 AWG 174 225 #4/0 AWG
480 155 200 #3/0 AWG - - -
600 124 175 #2/0 AWG - - -