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INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07) — PAGE 83
APPENDIX — MAIN-LINE CIRCUIT BREAKER
TABLE 25. FACTORY RECOMMENDED MAIN LINE CIRCUIT BREAKERS
FOR MQ POWER INDUSTRIAL GENERATORS
Generator
Model
ABB or
Cutler Hammer
Model No.
Generator
Output
(Voltage)
Generator
Output
(Amps)
Breaker
Frame Size
(Amps)
Breaker
Trip Rating
(Amps)
Interrupting
Rating RMS
(Sym Amps)
Cable Size
(kcmil)
{Note 1}
Max. No.
Cables Per
Phase
Type Of
Connection
{Note 2}
Torque Rating
Of Lugs
(in./lbs.)
MQP20IZ
T1NQ070TL
240V - 1Ø 83
100
90
22,000 #1 ~ 6 1
Aluminum
Lugs
45
208V - 3Ø 69 70
T1NQ060TL 240V - 3Ø 60 60
T1NQ030TL 480V - 3Ø 30 30
MQP30DZ/
MQP30GM
T3NQ125TL
240V - 1Ø 125
225
125
22,000
#1 ~ 4
1
Aluminum
Lugs
45
208V - 3Ø 104 100
240V - 3Ø 90 90
T1NQ050TL 480V - 3Ø 45 50 #1 ~ 6
MQP40IZ
T3NQ150TW
240V - 1Ø 167
225
175
25,000 #1 ~ 2
1
Spaded
Ter minal
275
208V - 3Ø 130 150
T3NQ125TW 240V - 3Ø 120 125
T1NQ060TL 480V - 3Ø 60 100 60 22,000 #1 ~ 6
Aluminum
Lugs
45
MQP45GM
Technical data for this unit is TBD
MQP50IZ
T3NQ175TW
240V - 1Ø 208
225
200
25,000
#1 ~ 1/0
1
Spaded
Ter minal
275
208V - 3Ø 173 175 #1 ~ 2
T3NQ150TW 240V - 3Ø 150 150 #1 ~ 2
T1NQ070TL 480V - 3Ø 75 100 80 22,000 #1 ~ 6
Aluminum
Lugs
45
MQP60GM/
MQP60IV
T4NQ250BW
240V - 1Ø 250
250
250
25,000
#1 ~ 2/0
1
Spaded
Ter minal
275
208V - 3Ø 208 200 #1 ~ 1/0
T3NQ175TW 240V - 3Ø 180 175 #1 ~ 2
T1NQ100TL 480V - 3Ø 90 100 100 22,000 #1 ~ 4
Aluminum
Lugs
45
MQP80GM/
MQP80IV
JG3250
240V - 1Ø 250
250
250
18,000 #4 ~ 350
1
Aluminum
Lugs
275
208V - 3Ø 260
240V - 3Ø 226 225
FJ3125 480V - 3Ø 113 225 125 14,000 #4 ~ 1/0 120
MQP100GM
MQP100IV
KG3300 240V - 1Ø 275
400
300
18,000 250 ~ 500
1
Aluminum
Lugs
375
KG3350 208V - 3Ø 347 350
KG3300 240V - 3Ø 301 300
FG3150 480V - 3Ø 150 225 150 14,000 #4 ~ 1/0 120
MQP125IV
KG3350 240V - 1Ø 313
400
350
18,000
250 ~ 500 1
Aluminum
Lugs
375
KG3400 208V - 3Ø 399 400 3/0 ~ 250 2
KG3350 240V - 3Ø 346 350 250 ~ 500
1
JG3225 480V - 3Ø 173 250 175 14,000 #4 ~ 350 275
NOTES:
1. Refer to National Electric Code (NEC) for specific conductor sizes based on current and temperature ratings.
2. Lug sizes are given for standard circuit breaker setup. All lugs listed are made of aluminum and are compatible with both aluminum and copper conductors.
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