TP-6277 10/03 Wiring Diagrams 35
Section 5 Wiring Diagrams
5.1 Four-Lead Reconnectable
(Single-Phase) Generator Sets
The following information illustrates the reconnection of
four-lead generator sets. In all cases, conform to the
National Electrical Code (NEC).
NOTICE
Voltage reconnection. Affix a notice to the generator set after
reconnecting the set to a voltage different from the voltage on
the nameplate. Order voltage reconnection decal 246242
from an authorized service distributor/dealer.
5.1.1 120-Volt Configuration
If the installation requires a factory two-pole circuit
breaker, do not connect the load-side terminals of the
circuit breaker together. See Figure 5-1. When
connecting stator phase l eads together, size the output
lead (L1) to handle the amperage. Use a jumper lead on
the line side of the circuit breaker to balance the load of
the generator set.
GRD.
L1
L2
4321
L0 (Neutral)
L0
Ground
Load
Side
Line
Side
Two-Pole
Circuit
Breaker
Jumper
Lead
Stator Leads
60 Hz
L0-L1 120 Volt
L0-L2 120 Volt
Figure 5-1 With Jumper Lead
5.1.2 120/240-Volt Configuration
The 120/240-volt configuration does not use a jumper
lead. If the unit was originally wired for straight 120 volt,
remove the jumper lead (see Figure 5-1 for location).
Select a two-pole circuit breaker. Application of two
single-pole circuit breakers does not conform to NEC
requirements for supplying a 200--240-volt load—even
if the breakers are mechanically attached. Leads L1
and L2 are for different phases—never connect them.
4321
Stator Leads
L0
GRD.
L2
L1
L0 (Neutral)
Line
Side
Factory
Two-Pole
Circuit
Breaker
Ground
Load
Side
100-120/200-240 Volt,
3 Wire
60 Hz
L0-L1 120 Volt
L0-L2 120 Volt
L1-L2 240 Volt
Figure 5-2 Without Jumper Lead
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