Kohler 12EFKOZD, Installation Manual, Page: 33 / 84

TP-7045 3/18c 33 Section 6 Electrical System
6.5 Battery
Batteries and their installation must conform to USCG
Regulations 183.420 (a) through (g). Provide generator
sets with batteries separate from the propulsion
engine’s whenever possible. The starting/charging
systems of both the generator set and the engine must
have a common negative (--) ground.
USCG Regulation 183.415, Grounding, requires
connection of a common conductor to each grounded
cranking-motor circuit. Size the conductor to match the
larger of the engine’s two battery cables. Figure 6-3 lists
recommended minimum cable sizes for generator set
battery connections at various generator set-to-battery
distances. Connecting a common conductor to each
grounded cranking motor circuit prevents the starting
motor current from using alternative electrical paths
should the cranking motor ground circuit be restricted or
open because of oxidation or loose hardware.
Alternative electrical paths include metallic fuel lines
that can pose a hazard. See Section 7 for locations of
the battery connections to the generator set.
Required Battery Cable
(Minimum)
Distance (from battery to
generator set)
2.5 m (8.3 ft.) 5 m (16.4 ft.)
Battery Voltage 12V 24V 12V 24V
14EKOZD/12EFKOZD
(1 and 3 Phase)
16EKOZD/13.5EFKOZD
(1 and 3 Phase)
21EKOZD/18EFKOZD
(1 Phase)
21EKOZD/17EFKOZD
(3 Phase)
24EKOZD/20.5EFKOZD
(1 and 3 Phase)
# 2 # 4 # 1/0 # 2
32EKOZD/28EFKOZD
(1 and 3 Phase)
40EKOZD/35EFKOZD
(1 and 3 Phase)
# 1/0 # 3 # 4/0 # 1/0
Figure 6-3 Battery Cable Sizing Recommendations
Kohler Co. recommends using one 12-volt battery (or
two for 24-volt systems, as the spec requires) to start the
generator. See Figure 6-4 for minimum cold cranking
amps (CCA) recommendations.
12-Volt Starting Battery Size CCA
at --15

C (5

F) or 100 Amp. Hr.
Models CCA
14EKOZD/12EFKOZD (1 and 3 Phase)
650
16EKOZD/13.5EFKOZD (1 and 3 Phase)
21EKOZD/18EFKOZD (1 Phase)
21EKOZD/17EFKOZD (3 Phase)
24EKOZD/20.5EFKOZD (1 and 3 Phase)
32EKOZD/28EFKOZD (1 and 3 Phase)
1000
40EKOZD/35EFKOZD (1 and 3 Phase)
Figure 6-4 Battery Recommendations
6.6 Wiring
Use only stranded copper wire. Conform to USCG
Regulations 183.425 through 183.460 for wire gauges
and insulation, conductor temperature ratings, sheath
stripping, conductor support and protection, conductor
terminals and splices, and over-current protection
(circuit breakers, fuses). Use rubber grommets and
cable ties as necessary to protect and secure the wire
from sharp objects, the exhaust system, and moving
parts.
6.7 Remote Connection
Kohler Co. offers several remote panels for connection
to the generator set.
Contact your local Kohler
r
distributor/dealer for detailed descriptions. Kohler Co.
also offers wiring harnesses in various lengths with a
connector keyed to the controller box connector. A
“pigtail” harness is also offered which includes the
appropriate connector on one end and has pigtails that
the installer can use to connect to a customer-supplied
start/stop switch or separate lights and hourmeter.
Consult wiring diagrams, ADVs, and instruction sheets
for connection information/details.
Note: Gauge senders. Gauge senders are available
for most generator sets. If using customer-
supplied gauges, be sure they are compatible
with generator set senders. Contact an
authorized Kohler
r
service distributor/dealer.
Gauges and senders are available as service
items from an authorized Kohler
r
service
distributor/dealer.