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Grounding
09
Battery Ring terminals are recommended for 12V input and output connections. The following
is a reference incorporating a critical 0-3% max voltage drop and may not cover all unique
applications that may exist. When the battery charger is sending the rated amps, the input side
may experience a draw higher current draw by a factor of up to 50%. Larger wire sizes general-
ly improve performance, whereas smaller wire sizes may reduce performance, especially if
undersized. When considering wiring, fusing, and connection options, think big and short as
possible as heavier components and shorter wire length offer less resistance and voltage drop.
Terminal Size Limitations may apply. The installer is responsible for ensuring that the correct
cable and fuse sizes are used when installing the DC-DC battery charger.
The DC-DC share a common negative ground meaning that there should be only one common
ground point between all batteries and electronics typically seen in either chassis/body ground,
a canopy, a trailer, or even the vehicle battery negative connection. In most cases, connecting
the starter and house battery directly to the DC-DC is enough for a grounding application. You
will not ground the body of the DC-DC. In the illustration below, the two batteries are connected
to the same chassis ground point.
NOTE
Wiring and Fusing
Depending on the application, the grounding point may differ.
Cable Length/ Min AWG
CableModel
Recommended
Fuse
To DC Input
(Starter)
DCC-1212-20
DCC-1212-40
30A or close10AWG 8-6AWG 6-4AWG
50A or close8AWG 8-6AWG 4AWG
12AWG 10-8AWG 6AWG
DCC-1212-60
To DC Output
(House)
To DC Input
(Starter)
To DC Output
(House)
To DC Input
(Starter)
To DC Output
(House)
25A or close
6AWG 4AWG 4AWG* 60A or close
4AWG 4AWG* 4AWG* 90A or close
6AWG 4AWG 4AWG* 75A or close
0 ~ 10ft /
0 ~ 3m
11 ~ 20ft /
3 ~ 6m
21 ~ 30ft /
6 ~ 9m
*3-10% Non-Critical Voltage Drop
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