Generac Power Systems 00802-3 - Manual (Page 28)

F i g u r e 3 0 — I n s t a l l a t i o n w i t h I s o l a t i o n R e c e p t a c l e
BATTERY INSTALLATION
RECOMMENDED BAHERY
Install a battery that meets the following requirements:
• 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 deliver­
ing 360 cold cranking amperes.
• For prevailing ambient temperatures below 32°F (0°C), use
a battery rated 95 amp-hours and capable of delivering
450 cold cranking amperes.
IMPORTANT: IF THE BATTERY IS TO BE USED TO
POWER OTHER VEHICLE ACCESSORIES, AS
WELL AS START THE GENERATOR. YOU MAY
NEED A BATTERY WITH A LARGER CAPACITY.
BAHERY CABLES
Using battery cables that are too long or too small in
diameter may cause a drop in voltage which causes
starting problems. For best cold weather starting, the
voltage drop between battery terminals and the gener­
ator connection point should not exceed 0.12 volts per
100 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 chart below.
CABLELENGTH
In Feet (meters) CABLE SIZE
Oto 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.
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