Generac Power Systems 004270-1 - Manual (Page 35)

Section 2 - Installation
QUIETPACT™ 75D Recreational Vehicle Generator
INSTALLATION
Figure 2.18 - Installation With Isolation Receptacle
DOCKSIDE
POWER
RECEPTACLE
2.7 BATTERY INSTALLATION
♦ 2.7.1 RECOMMENDED BATTERY
that meets the following
a 12-volt, automotive-type
Install a battery
requirements:
• The battery must be
storage battery.
• Use a battery with minimum ratings of 70 amp-hours
and 360 cold-cranking amps.
NOTE:
If the battery is to be used to power other vehicle
accessories, as well as to start the generator, you may
need a battery with a larger capacity.
^ 2.7.2 BATTERY CABLES___________________________
Using battery cables that are too long or too small in diam­
eter may cause a drop in voltage, which causes starting
problems. For the best cold weather starting, the voltage
drop between battery terminals and the generator con­
nection point should not exceed 0.12 volts per 100 amps
of cranking current.
The QUIETPACT™ 75D generator is rated at about 160
DC amps of cranking current to operate the starter and
glow plugs.
Select battery cables based on (a) cable length and (b) pre­
vailing ambient temperatures. Generally, the longer the
cable and the colder the weather, the larger the cable size
must be, as shown in the chart.
CABLE LENGTH
in Feet (meters) CABLE SIZE
0 to 10 (0 to 3) 2*
11 to 15 (3.4 to 4.5) 0
16 to 20 (4.5 to 6) 000
*For warm weather, use No. 2 cable up to 20 feet.
» 2.7.5 BATTERY CABLE CQNNEaiONS____________
1. Connect the battery cable from the battery post or
terminal, indicated by a POSITIVE, POS, or ( + ), to
the insulated lug on the unit frame (Figure 2.19).
NOTE:
Check to be sure the cable boot for the positive cable
has been installed.
2 .
3.
4.
Connect the battery cable from the battery post,
indicated by a
NEGATIVE, NEG, or (-), to the vehi­
cle frame ground connection (Figure 2.19).
Connect a cable from the vehicle frame ground to
the negative post on the generator frame.
Connect
cables so the connectors are clean
and tight.
Figure 2.19 - Connecting Battery Cables
♦ 2.7.4 BAHERY COMPARTMENT
Install the generator battery in its own, vented compart­
ment. Place the battery compartment away from any
source of heat, sparks, or flame.
Generac* Power Systems, Inc. 33