1.10.2 TRANSFER SWITCH
1.10.2.1   15 kW Units
Transfer switches for use with this generator are sold 
separately and can be purchased from dealers.
• Install any transfer switch in accordance with the 
instructions supplied with the transfer switch.
• Failure to utilize a the manufacturer’s transfer 
switch with this generator will void the warranty.
1.11 BATTERY INSTALLATION
Fill the battery with the proper electrolyte fluid if 
necessary and have the battery fully charged before 
installing it.
Before installing and connecting the battery, complete 
the following steps:
1.  Set the generator's AUTO/OFF/MANUAL switch to 
OFF.
2.  Turn off utility power supply to the transfer 
switch.
3.  Remove the 7.5 amp and 15 amp fuses from the 
generator control panel.
Battery cables were factory connected at the genera-
tor (Figure 1.3). Connect cables to battery posts as 
follows:
4.  Connect the red battery cable (from starter con-
tactor) to the battery post indicated by a positive, 
POS or (+).
5.  Connect the black battery cable (from frame 
ground) to the battery post indicated by a nega-
tive, NEG or (—).
6.  Replace the 7.5 amp and 15 amp fuses in the 
generator control panel.
NOTE:
Damage will result if battery connections are made 
in reverse.
Figure 1.3 – Battery Cable Connections
NOTE:
The generator is equipped with a battery trickle 
charger that is active when the unit is set up for 
automatic operation. With the battery installed 
and utility power source voltage available to the 
transfer switch, the battery receives a trickle 
charge while the engine is not running, to prevent 
self-discharge. The trickle charger is designed to 
help extend the life of the battery by maintain-
ing the battery when the unit is not running. The 
trickle charge feature cannot be used to recharge 
a discharged battery.
1.12 THE BATTERY
Servicing of the battery is to be performed or super-
vised by personnel knowledgeable of batteries and 
the required precautions. Keep unauthorized person-
nel away from batteries.
When replacing the battery, use the following type of 
battery: Group 26/26R 12-volt battery with a rating 
of 525 cold-cranking amps minimum for 15 kW at
-17.8º C (0º F) minimum. When using a maintenance-
free battery, it is not necessary to check the specific 
gravity or electrolyte level. Have these procedures 
performed at the intervals specified in the “Service 
Schedule.” A negative ground system is used. Battery 
connections are shown on the wiring diagrams. Make 
sure the battery is correctly connected and terminals 
are tight. Observe battery polarity when connecting 
the battery to the generator set.
DANGER
 Do not dispose of the battery in a fire. The 
battery is capable of exploding.
 A battery presents a risk of electrical shock 
and high short circuit current. The following pre-
cautions are to be observed when working on 
batteries:
•  Remove the 7.5A and 15A fuses from the genera-
tor control panel;
• Remove watches, rings or other metal objects;
• Use tools with insulated handles;
• Wear rubber gloves and boots;
•  Do not lay tools or metal parts on top of the 
battery; and
•  Disconnect charging source prior to connecting or 
disconnecting battery terminals.
 Do not open or mutilate the battery. Released 
electrolyte has been known to be harmful to the 
skin and eyes, and to be toxic.
 The electrolyte is a dilute sulfuric acid that is 
harmful to the skin and eyes. It is electrically 
conductive and corrosive. 
Section 1 — General Information
15 kW Generator
 8