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Voltage Reconnection
Procedure
Four-Lead (Single-Phase) Generator Sets
See
Figure 5-1
for
(single-phase) generator set options.
120/240 or 100/200 volt
110/220 or 100/200 volt
Figure 5-1. Four-Lead, Single-Phase Generator Set
Voltage Connection Options
120/240-Volt (or 110/220-Volt,
100/200-Volt) Configurations
Circuit breaker must be a circuit breaker manufacturer
two-pole circuit breaker.
breakers do not conform to NEC requirements when
supplying a 240-volt (or 220-volt) load. This is true even
if they are mechanically attached together. Leads L1
and L2 are different phases and must never be
connected together.
LO (Neutral)
Ground
Load
Side
Line
Side
1
4
3
2
Stator Leads
Leads
L0-L1
L0-L2
L1-L2
Figure 5-2. 100-120 Volt, 3 Wire Configurations
5-2 Wiring Diagrams
four-lead
reconnectable
60 Hz
50 Hz
X
X
Two single-pole circuit
LO
GRD
L2
L1
Factory
Two-Pole
Circuit
Breaker
60Hz
50Hz
120 volt
110 volt
120 volt
110 volt
240 volt
220 volt
TP-5631-5
200-240-Volt Configurations
This system uses a single-pole circuit breaker with
200-240 Volt, 2 wire.
LO (Neutral)
Ground
Load
Side
Line
Side
4
3
2
1
Stator Leads
Leads
L0-L1
Figure 5-3. 100-120 Volt, 2 Wire Configurations
LO
GRD
L1
Single-Pole Circuit
Breaker
Tape to insulate
from ground
60Hz
50Hz
120 volt
110 volt
TP-5631-5
TP-5605 4/97
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