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25
Grounding the Generator
The home generator must be installed as part of a system
that includes a listed transfer switch, with neutral to ground
bonding at the transfer switch in accordance with installation
instructions. Unless mandated by local code, additional
grounding to earth at the generator is not required. Any
Power Connections from Generator to Transfer Switch
Utility Circuit Connection
“240V Utility” leads must be routed in conduit. The “240V
Utility” leads deliver power to the generator’s circuit board,
optional battery warmer and optional oil warmer. This
power also charges the battery. When power on these
leads is lost, the generator will start.
Using installer-supplied minimum 300V, 14 [2.5 mm
2
]
AWG wire, connect each control circuit terminal in the
generator
(25 and 26) to the fuse block in the automatic transfer
switch.
Transfer Switch Communication
Using installer supplied #18 AWG [1 mm
2
] twisted pair
conductors, no greater than 200 ft in length, connect 4 and 5
from the generator terminal block (A) to T/R (4)and GND (5)
on the transfer switch control board (B).
Generator Power Connection
For 10 kW Units: Using installer supplied minimum 300V,
wires and the table located on page 25, connect generator
power output Line 1, Line 2, neutral, and ground to the
corresponding Line 1, Line 2, neutral and ground in the
transfer switch.
*Use National Electric Code for correction factors and wire
size calculations.
Reference illustration and chart on pages 24 and 25 for
further information.
When making connections, obey wire type and torque
specifications printed on the circuit breaker and neutral/
ground connectors.
grounding at generator must use metal piercing lock washers
(or equal), UL listed terminals installed per terminal supplier’s
instructions, and comply with national electrical codes and
local requirements.
4
N.O. N.C.
5
T/R (4)
GND (5)
B
A
Not for
Reproduction
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