Grounding the Generator
The standby 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 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.
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 AWG [2.5 mm
wire, connect each control circuit terminal in the generator (25
and 26) to the fuse block in the automatic transfer switch.
*Use National Electric Code for correction factors and
wire size calculations.
22
Generator Power Connection
Using installer supplied minimum 300V wires and
the table located on page 21, 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. When making connections, obey wire
type and torque specifications printed on the circuit
breaker and neutral/ground connectors.
Transfer Switch Communication
Using installer supplied #18 AWG [1 mm
conductors, no greater than 200 ft in length, connect
4(Tx Rx) and 5(Tx Rx GND) from the generator
terminal block to 4(T/R) and 5(GND) on the transfer
switch control board.
2
]
A
] twisted pair
2
4
5
5(GND)
4(T/R)
B