Generac Power Systems 004701-0 - Manual (Page 34)

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2.6.6 POWER SUPPLY CORD
The power supply cord must comply with all appli-
cable codes, standards and regulations. It must be
large enough to handle the full amperage to which it
will be subjected.
2.6.7 GROUND FAULT CIRCUIT
INTERRUPTERS
The National Electrical Code (NFPA 70, 551-7)
requires that a ground fault circuit interrupters
(GFCIs) be installed on all external and some internal
electrical receptacles. Contact the dealer for recom-
mendations.
2.7 BATTERY INSTALLATION
2.7.1 RECOMMENDED BATTERY
Install a battery that meets the following require-
ments:
• The battery must be a 12-volt, automotive type
storage battery.
• For prevailing ambient temperatures above 32°
F (0° C), use a battery rated 70 amp-hours and
capable of delivering 400 cold-cranking amperes.
• For prevailing ambient temperatures below 32°
F (0° C), use a battery rated 95 amp-hours and
capable of delivering 400 cold-cranking amperes.
NOTE:
If the battery is to be used to power other vehicle
accessories, as well as start the generator, a bat-
tery with a larger capacity may be needed.
2.7.2 BATTERY CABLES
Using battery cables that are too long or too small in
diameter 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 connection point should not exceed 0.12
volts per 100 amperes of cranking current.
These generators are rated at about 100 DC amperes
of cranking current.
Select battery cables based on (a) cable length and
(b) prevailing ambient temperatures. Generally, the
longer the cable and the colder the weather, the larger
the cable size must be, as shown in the following
chart.
* For warm weather, use No. 2 cable up to 20 feet.
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2.7.3 BATTERY CABLE CONNECTIONS
1. Connect the battery cable from the battery post or
terminal indicated by a POSITIVE, POS or (+) to
the lug on the starter contactor (Figure 2.16).
NOTE:
Check to be sure the battery cable boot for the
starter cable has been installed.
2. Connect the battery cable from the battery post
indicated by a NEGATIVE, NEG or (-) to the
frame ground connection (Figure 2.16).
3. Connect cables so the connectors are clean
and tight.
Figure 2.16 – Connecting Battery Cables
39.6
[1 9/16"]
69.6
[2 3/4"]
34.3
[1 3/8"]
71.2
[2 13/16"]
NEG. BAT.
CONNECTION
POS. BAT.
CONNECTION
2.7.4 BATTERY COMPARTMENT
Install the generator battery in its own, vented com-
partment. Place the battery compartment away from
any source of heat, sparks or flame.
Provide ventilation openings in the battery compart-
ment. The minimum size of openings should be 2
square inches at the top of the compartment. Mount
the battery on a strong, rigid supporting structure,
where leaks and spills of battery fluid will not cause
damage.
2.8 OPTIONAL ACCESSORIES
A plug-in receptacle (Figure 2.17) is provided on
the generator set. Use this receptacle to connect an
optional remote-mounted start/stop panel to the
generator. Installation of such a panel will permit
starting and stopping the generator engine from any
convenient location inside the vehicle.
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Section 2 – Installation
Recreational Vehicle Generator
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