Dc Ground Wire; Dc Negative Wire; Battery Temperature Sensor (Battery Charger Models Only); Dc Positive Wire - Magnum Energy MM Series Installation And Operation Manual

2.0 Installation
Note: 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 first battery string to the inverter's negative
terminal (see figure 16 for reference).

Battery Temperature Sensor (Battery charger models only)

Connect the RJ11 connector end of the BTS to the ACCESSORY PORT
(see figure 3, item 11) on the inverter. Connect the ring lug end to the
negative terminal of the first battery string (same place as the nega-
tive DC wire to the inverter's negative terminal); 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 remove the fuse (or open the
circuit breaker).
Warning: DO NOT close the DC fuse/DC disconnect (or close
the DC circuit breaker) to put 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
positive DC terminal.
Connect a short wire (same rating as the DC wires) to one end of the
fuse block and the other end of the short wire to the positive terminal
of the last battery string (see figure 16 for reference). This is essential
to ensure even charging and discharging across the entire battery
bank.
Ensure the DC wire connections (on the batteries, inverter and fuse
lugs/DC circuit breaker) are flush on the surface of the DC terminal's
and the hardware (lock washer and nut) used to hold these connec-
tions are stacked correctly (see figures 9 and 10)
Verify all DC connections are torqued from 10 to 12 foot pounds.
Once the DC connections are completely wired and tested, coat the
terminals with an approved anti-oxidizing spray.
Press on the red and black terminal covers to the inverter's DC
connectors to secure them in place.
If the batteries are in an enclosure, perform a final check of the hold
down brackets and all connections. Close and secure the battery
enclosure.
16
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