TP-6329 8/07 13Section 1 General
Kohler generator sets are shipped with the generator
neutral attached to the generator in the junction box. At
installation, the neutral can be grounded at the
generator set or lifted from the ground stud and isolated
if the installation requires an ungrounded neutral
connection at the generator. The generator set will
operate properly with the neutral either bonded to
ground or isolated from ground at the generator.
GM32850B-B
1
1. Ground GND connection
2. L0 connection
3. Line circuit breaker
2
3
End View
Figure 1-1 Generator Set Equipment Ground
Connection (inside junction box)
1.8.4 Load Lead Connections
Feed load leads to the generator set junction box
through the back of the box. See Figure 1-2. Route DC
leads in separate conduit from AC conductors.
1
tp6329
1. Bring leads in through the back of the junction box at this
location.
Non-Service Side
Figure 1-2 Load Lead Connection
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.
Wire Size for Unit
Connection
Tightening Torque, Nm (in. lb.)
Slot Head 4.7 mm (No. 10) or Larger*
Hexagonal Head—External
Drive Socket Wrench
AWG, kcmil (mm
2
)
Slot Width <1.2 mm (0.047 in.)
Slot Length <6.4 mm (0.25 in.)
Slot Width >1.2 mm (0.047 in.)
Slot Length >6.4 mm (0.25 in.)
Split-Bolt
Connectors
Other
Connections
18--10 (0.82--5.3) 2.3 (20) 4.0 (35) 9.0 (80) 8.5 (75)
8 (8.4) 2.8 (25) 4.5 (40) 9.0 (80) 8.5 (75)
6--4 (13.3--21.2) 4.0 (35) 5.1 (45) 18.6 (165) 12.4 (110)
3 (26.7) 4.0 (35) 5.6 (50) 31.1 (275) 16.9 (150)
2 (33.6) 4.5 (40) 5.6 (50) 31.1 (275) 16.9 (150)
1 (42.4) — 5.6 (50) 31.1 (275) 16.9 (150)
1/0--2/0 (53.5--67.4) — 5.6 (50) 43.5 (385) 20.3 (180)
3/0--4/0 (85.0--107.2) — 5.6 (50) 56.5 (500) 28.2 (250)
250--350 (127--177) — 5.6 (50) 73.4 (650) 36.7 (325)
400 (203) — 5.6 (50) 93.2 (825) 36.7 (325)
500 (253) — 5.6 (50) 93.2 (825) 42.4 (375)
600--750 (304--380) — 5.6 (50) 113.0 (1000) 42.4 (375)
800--1000 (406--508) — 5.6 (50) 124.3 (1100) 56.5 (500)
1250--2000 (635--1016) — — 124.3 (1100) 67.8 (600)
* For values of slot width or length not corresponding to those specified, select the largest torque value associated with the conductor size.
Slot width is the nominal design value. Slot length is to be measured at the bottom of the slot.
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.
Figure 1-3 Tightening Torque for Screw-Type Pressure Wire Connectors
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