Specifications

AC WIRING DIAGRAM, MMG125, MMG155, MMG180
For units equipped with an optional 4-position voltage selector switch.
BRN
240V 50A
BREAKER
240V 50A
BREAKER
BLK
BLK
BRN
59
13
6
10 14
7
8
11
12
15
16
T5
BLK
BLK
GRN/YEL
(T7)
CT-3
BRN/WHT
L2 L3
SHUNT
L1
CT-2CT-1
BREAKER
BLK
BLK
BLK
GRN/YEL
GRN/YEL
BLK BLK
1
2 3
4
T4
BRN/WHT
(2.5K, 2 WATT)
ADJUSTMENT
VOLTAGE
COM
L1
GROUND
TO GEN FRAME
CT1 CT2 CT COMMON CT3
GN/YL BR/WT YL/WT OR/WT
CT-3 CT-2 CT-1
L0
60HZ
50HZ
ON REGULATOR
4 AMP FUSE
WHT BLK F+
F-
F+
3
4
6
7
BRN/WHT BLK BLK F- BRN
MECHANICAL LUGS
ELECTRONIC CONTROL BOARD
L2 L3
GENERATOR CURRENT
INPUTS
GEN VOLTAGE
INPUTS
4 PIN PLUG 4 PIN PLUG
GROUND
TO
FRAME
BLK
GFCI RECPT 120V
17
21
25
18
22
26
19
20
23
24
27
28
T9
RCPT. 240V 50A 50A RCPT. 240V
BLK BLK BLK
T6 T8
T10
T11
T7 T1
T12
T2
T3
GENERATOR
F+
F-
120V 20A BRKER
120V RECPT GFCI
6GA
L2
SE350
VOLTAGE REGULATOR
6GA
6GA
12VDC
(T9)
GRN/YEL
BRKER 20A 120V
GND
(3) JUMPER
WIRES (DASHED) ON PHASE SWITCH
10GA
BLK
RED
PLUG
21 PIN
6 AWG
CIRCUIT
24
23
NO
LUG DOOR
NC
12
11
SAFETY SWITCH
L3 L2
L1 N
WHT YEL BRN ORN
PP NN
34
33
29
30
36
35
32
31
37
38
39
40
2 7
81
46 53
BRN/W
BRN
RED
GRN
WHT/BR
BLK
ORN
YEL
BLK
VOLT REGULATION RELAY
BLK
BRN
WHT
BUCK XFORMER
RELAY
WHT
WHT
RED
BLK
X3X1
H4 H2
X2 X4H3H1
COM
NO
NC
BLK
BLK
65
8
7
2
VOLTAGE RELAY
TP0
TP3
TP3A
L1 L3
LO
T9 T7
RED
GEN BOX
240V 50A
BREAKER
BLK
BLK
RCPT. 240V 50A
BLK BLK
GRN/YEL
LT B LU LT B LU
LT B LU
LT B LU LT B LU
(L0)
WIRES NOT USED IN
BUCK BOOST OPTION
BUCK BOOST OPTION
TO PLUG2 POS
X SEE DC
PRINT
TP3A
TO 21 PIN PLUG
"W" SEE DC
PRINT
43