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Generac Power Systems NP-30G Series - Battery Installation; Battery and Cable Selection

Generac Power Systems NP-30G Series
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FLEXIBLE
CONDUIT
JUNCTION
BOX
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POWER
SUPPLY
CORD
DOCKSIDE
POWER
RECEPTICAl
VEHIClE
A-C
DISTRIBUTION
PANEL
RECOMMENDED
BATTERY
Install a battery that meets the following require-
ments:
Battery
must
be
a
12
volt,
automotive
type
storage
bat-
tery.
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
deliver-
ing
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.
BATTERY INSTALLATION
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 best cold weather starting, the
voltage drop between battery terminals and the
gen-
erator connection point should not exceed 0.12 volts
per 1
00 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
larg-
er the cable size
must
be as shown in the chart
below.
CABLE
LENGTH
in Feet {meters) CABLE SIZE
0
to 1 0
(0
to
3)
2*
11
to 15 (3.4 to 4.51
0
16 to 20 (4.5 to
6)
000
*For warm weather, use
No.
2 cable
up
to 20 feet.
-25-

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