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Generator aC Connection System
A single-phase, three-wire AC connection system is used
in the residential generator. The stator assembly consists
of a pair of stationary windings with two leads brought out
of each winding. The junction of leads T2 and T3 forms the
neutral lead, as shown schematically and as wiring diagram
below. A complete schematic and wiring diagram can be
found later in this manual.
NOTE: Neutral is not bonded to ground at generator.
T2
T3
Neutral
Circuit
Breaker
T4
T1
T4
Neutral
Neutral
Circuit
Circuit
Breaker
Breaker
N
Neutral
Line 1
Line 1
Neutral
To Transfer Switch
To Transfer Switch
Control
Control
Board
Board
10 A
240 VAC
To Transfer Switch
To Transfer Switch
Utility Fuse Connection
Utility Fuse Connection
14
Neutral
120 V
120 V
240 V
T1
Ground
Ground
G
Line 2
Ground
Line 2
Ground
Water
Water
Heater
Heater
10 A
Grounding the Generator
Ground the residential generator per applicable codes,
standards and regulations. There are two generator GND lug
locations. The one inside the alternator junction box next to
the circuit breaker is the primary lug and should meet most
applications. The second generator GND lug is located on the
frame below the generator circuit breaker cover, and should
ONLY be used for a ground rod located at the generator, if
required by local codes. See Controls for location.
Utility Circuit Connection
"240V Utility" leads must be routed in conduit. The
"240V Utility" leads deliver power to the generator's circuit
board and water heater. This power also charges the battery.
When power on these leads is lost, the generator will start.
Using installer-supplied minimum 300V, 14 AWG copper
wire, connect each ten-amp fuse terminal in the alternator
junction box to the ten-amp fuse terminals in the automatic
transfer switch.
When making connections, obey wire type and torque
specifications printed on the circuit breaker and neutral/
ground connector.
Fault Detection System
The generator may have to run for long periods of time with
no operator present. For that reason, the system is equipped
with sensors that automatically shut down the generator
in the event of potentially damaging conditions, such as
low oil pressure, high water temperature, over speed, and
other conditions. Refer to Fault Detection System in the
Operator's Manual for more detailed information.
The owner will use the remote LED indicator to observe the
status of the residential generator system. The remote LED
will turn on and off in a series of blinks if certain faults are
detected in the generator system. Consult with the owner
for a convenient location. Locate the electrical box in an
area visible by the home owner such as near a garage door
opener or security control panel.
To install the remote LED indicator:
1. Push the LED through the mounting plate from the
front until it snaps in place.
IMPORTANT: The LED is polarity sensitive.
2. Using provided 10 pole connector and installer-supplied
minimum 18AWG wire, connect the remote LED to the
generator control board +LED and GND connection.
Use wire nuts to attach wire to LED leads.
3. Attach mounting plate to installer-supplied
electrical box.
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