Kohler 15REYG, Installation Manual

Page: 13 / 68

TP-6727 10/11 13 Section 1 General
1.8.2 Electrical Connections
Several electrical connections must be made between
the generator set and other components of the system
for proper operation. Most field-installed accessory kits
include installation instructions. Comply with applicable
national and local codes when installing a wiring system.
See the dimension drawings in Section 7 for the
recommended stub-up location.
Size the wire according to the length of run and 115% of
the circuit current (amperage) as directed by the
National Electrical Code
r
(NEC) in ANSI/NFPA 70.
1.8.3 Ground and Neutral Connections
Ground the generator set. The grounding method must
comply with NEC and local codes.
Connect the
grounding strap to the generator set ground lug,
terminal GND inside the junction box or customer
connection box. See Section 3.4 for the ground lug
location.
Kohler generator sets are shipped from the factory with
the neutral attached to the alternator in the junction box.
At installation, the neutral can remain grounded at the
alternator or be lifted from the grounding stud and
isolated if the installation requires an ungrounded
neutral connection at the generator set. The generator
set will operate properly in either configuration.
Various regulations and site configurations including the
National Electrical Code (NEC), local codes, and the
type of transfer switch used in the application determine
the grounding of the neutral at the generator. NEC 2002
Section 250.20 is one example that has a very good
explanation of the neutral grounding requirements for
generators.
1.8.4 Load Lead Connections
Feed load leads to the generator set junction box or
customer connection box. See Figure 1-1 or Figure 1-2.
Route DC leads in separate conduit from AC
conductors.
2
ADV-7692
1. Customer interface connector
2. Load lead access
1
Figure 1-1 Load Lead Access without Customer
Connection Box
2
ADV-8159
1. Load lead access, behind panel
2. Customer interface connection location, behind panel
1
Figure 1-2 Load Lead Access with Customer
Connection Box
1.8.5 Terminal Connector Torque
Use the torque values shown in Figure 1-3 or Figure 1-4
for terminal connectors. Refer to UL-486A, UL-486B,
and UL-486E for information on terminal connectors for
aluminum and/or copper conductors.
Comply with
applicable national and local codes when installing a
wiring system.
Note: If a connector has a clamp screw such as a
slotted, hexagonal head screw with more than
one means of tightening, test the connector using
both applicable torque values provided in
Figure 1-3.
The National Electrical Code
r
is a registered trademark of the National Fire Protection Association, Inc.