Magnum Energy MM612 Inverter - Manual (Page 21)

©
2010 Magnum Energy, Inc.
Battery Bank Wiring
WARNING: Lethal currents will be present if the positive
and negative cables attached to the battery bank touch
each other. During the installation and wiring process,
ensure the cable ends are insulated or covered to prevent
touching/shorting the cables.
Info: DO NOT connect the DC wires from the battery bank to
the inverter until: 1) all DC/AC wiring complete, 2) the cor-
rect DC and AC overcurrent protection have been installed,
and 3) the correct DC voltage and polarity have been verifi ed.
Info: For optimum performance, a minimum battery bank
of 200 AHr is recommended.
Depending upon the type of batteries you use in the installation (6
or 12 VDC), the batteries must be wired in series, parallel, or series-
parallel to provide 12 VDC (see Appendix B - Battery Information, for
guidance on wiring batteries together). The interconnecting DC wires
must be sized and rated exactly the same as those that are used be-
tween the battery bank and the inverter.
Place the batteries as close as practical to the inverter, preferably in
an insulated and ventilated enclosure. Allow adequate space above the
batteries to access the terminals and vent caps (as applicable). Also,
allow at least 1” of space between the batteries to provide good air
fl ow. DO NOT mount the batteries directly under the inverter.
Info: To ensure the best performance from your inverter
system do not use old or untested batteries. Batteries
should be of the same size, type, rating, and age.
CAUTION: Install batteries in a well ventilated area. Bat-
teries can produce explosive gasses. For compartment or
enclosure installations, always vent batteries to the outside.
Inverter to Battery Bank Wiring
WARNING: Ensure all sources of DC power (i.e., bat-
teries, solar, wind, or hydro) and AC power (utility/shore
power or AC generator) are de-energized (i.e., breakers
opened, fuses removed) before proceeding.
CAUTION: The inverter is NOT reverse polarity protected.
If this happens, the inverter will be damaged and will not
be covered under warranty. Before connecting the DC
wires from the batteries to the inverter, verify the correct
battery voltage and polarity using a voltmeter. If the posi-
tive terminal of the battery is connected to the negative
terminal of the inverter and vice versa, severe damage will
result. If necessary, color code the cables with colored tape
or heat shrink tubing; RED for positive (+), and BLACK for
negative (-) to avoid polarity confusion.
2.0 Installation
15