Operator`s manual
2003 - Magnum Energy, Inc.
13
2. INSTALLATION
3. Installation, continued
Battery Wiring
WARNING: During the installation and wiring process, cover exposed battery
cable ends with electrical tape to prevent shorting the cables.
NOTE: DO NOT connect the positive cable to the inverter at this time.
Depending upon the type of battery you use in the installation (6 or 12 VDC), the
batteries must be wired in series, parallel or series/parallel to provide 12 VDC. The
interconnecting battery cables must be sized and rated exactly the same as those
that used to connect the inverter.
When connecting the cable to the battery terminal, hardware should be installed
in the following order: bolt, ring washer, cable lug, (battery terminal), ring washer,
lock washer, nut. Tighten terminal connections to at least 10 to 12 foot pounds.
When two cables are connected to a terminal (i.e., negative terminal), the hard-
ware should be installed in the following order: bolt, ring washer, DC negative cable
lug, inverter negative cable lug, (battery terminal), ring washer, lock washer, nut.
Parallel Connection
(multiple 12 VDC batteries to create a 12 VDC string)
A parallel connection combines overall battery capacity by the number of batter-
ies in the string. Even though there are multiple batteries, the voltage remains the
same. In the example on the next page (Figure 7), four, 12 VDC, 100 AHr batteries
are combined into a single string, resulting in a 12 VDC, 400 AHr bank.
Connect the negative battery terminals together using short cables.
Connect the positive battery terminals together using short cables.
Connect the negative battery cable (BLACK) from the inverter to the negative
terminal of the end battery. At the same time, connect a DC ground cable between
the negative terminal and the vehicles DC grounding bus.
Connect the positive (RED) battery cable from the inverter to the positive termi-
nal of the battery at the opposite end of the string. This is essential to ensure even
charging and discharging across the entire battery string.
NOTE: A fuse must be placed between the positive terminal and the positive (RED)
battery cable to the inverter.
Once the batteries are completely wired and tested, coat the terminals with an
approved anti-oxidizing spray.
Figure 5
Battery Hardware Installation
Nut - Washer - Lug - Terminal - Washer - Bolt Nut - Washer - Lug - Inverter Terminal
Figure 6
Inverter Hardware Installation