Magnum Energy MM-AE Series - Manual (Page 22)

©
2010 Magnum Energy, Inc. 16
2.0 Installation
CAUTION: The inverter is NOT reverse polarity pro-
tected. 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 voltme-
ter. If the positive 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 polar-
ity confusion.
Info: The DC overcurrent device (i.e., fuse or circuit
breaker) must be placed in the positive (RED) DC cable
line between the inverter’s positive DC terminal and
the battery’s positive terminal (RED); as close to the
battery as possible.
DC Ground Wire
Route an appropriately sized DC grounding wire (GREEN or bare
wire) from the inverter’s DC Ground Terminal (see Figure 4, Item 17)
to a dedicated system ground. Recommended tightening torque is
45 in. lbs.
DC Negative Wire
Route an appropriately sized DC negative wire (BLACK) from the
negative terminal of the fi rst battery string to the inverter’s negative
terminal (see Figure 16 for reference).
Battery Temperature Sensor
Connect the RJ11 connector end of the BTS to the ACCESSORY PORT
(see Figure 3, Item 11) on the inverter. Connect the other end of the
BTS to the negative terminal of the fi rst battery string (in same place as
the negative DC wire above); refer to Figure 9 for the correct hardware
placement.
DC Positive Wire
Mount the DC fuse block and disconnect (or circuit breaker assembly)
as near as practical to the batteries, and then open the disconnect
(or circuit breaker).
WARNING: DO NOT close the DC fuse/DC disconnect (or
close the DC circuit breaker) to enable battery power to
the inverter at this time. This will occur in the Functional
Test after the installation is complete.
Route and connect an appropriately sized DC positive wire (RED) from
the DC fuse block (or circuit breaker assembly) to the inverter’s posi-
tive DC terminal.