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ELECTRICAL DIAGRAMS
G-2
WIRING DIAGRAM -
CONTROL PC BOARD
FIRING PC BOARD
283
284
285
286
287
288
2
R3
R4
R5
R6
R7
R8
03
204
205
206
207
208
TO T1
AUXILIARIES
J1
1 2 3 4 5 6 7 8 9 10
J3
J2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
201
261
263
231
202
215A
230
341
222A
260
264
235
234
215B
233
232
222D
273
340
274
252
251
240
241
M1
M2
M3
M4
M5
M6
M9
M10
M7
M8
M9
M10
M1
M2
M3
M4
M5
M6
1 2 3 4 5 6 7 8 9 10
252
253
274
AC
AC
+
-
273
297
232
233
1
4
7
10
2
5
8
11
3
6
9
12
203
204
205
206
207
208
271
251
FAN
260
261
U
V
W
1CR
241
240
263
FRONT
TRANSFORMER
IRON
SECONDARY LEAD
+
92
293
TP1
TP2
C3
820uF
500V
30
300W
2
300W
30
300W
-+
-
294A
294B
H2
H
1
X2
X1
2
C2
C1
02
201
215A
215
G1
G5
G3
G2
G4
G6
RESISTOR BANK
SCR1
SCR3
SCR5
SCR2
SCR4 SCR6
222D
222B
PARALLELING
CONNECTIONS
CB1
10 A FAN
CIRCUIT
BREAKER
S1
POWER SWITCH
12
11
10
W
9
8
7
V
6
5
4
U
TO
PRIMARY
COILS
550-575V CONNECTION
12
11 10
W
9
87
V
6
54
U
TO
PRIMARY
COILS
440-460V CONNECTION
12
11
10
W
9
8
7
V
6
5
4
U
TO
PRIMARY
COILS
380-415V CONNECTION
TO T2
TO T1
3
POWER
TO T2
TO T1
H2
H1
H2
H1
H2
H1
TO A SYSTEM GROUND PER
NATIONAL ELECTRIC CODE
T1
T1
T1
T2
MULTI-SOURCE WIRING DIAGRAM
16
9
8
1
CONNECTORS VIEWED FROM INSERTION END
ELECTRICAL SYMBOLS PER E1537
1
2
1
3
1
5
1
4
3
4
4
6
5
8
6
10
272
10-13-2000
L11414
253
+
+
J7
284
283
286
285
288
287
240
215
231
J8
J5
G1
G2
G3
G4
G5
G6
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
1
2
3
4
5
6
1 2 3 4
J4
-
234
235
LED (W) (RIGHT)
230
341
LED (G) (LEFT)
LED (Y) (CENTER)
ELECTRODE
WORK
OUTPUT SHUNT
50 mV@800 A
INPUT SNUBBER
ASSEMBLY
L3
L2
L1
G
L3
L2
L1
L3
L2
L1
INPUT
BOX
WELDER
BASE
TRANSFORMER
BRACKET
CONTROL
BOX COVER
PROTECTIVE BONDING CIRCUIT
2
R9
R2
R1
22C
222A
301
264
(TOP)
(BOTTOM)
264
301
SCR
THERMOSTAT
302
250
REAR
TRANSFORMER
IRON
215B
L1
L2
DIGITAL OUTPUT METER
P11
J11
CONTROL BOX
DIODE BRIDGE
302
271
OUTPUT
BYPASS
J6
G-2
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.
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