Owners Manual

© 2015 Sensata Technologies 15
Installation
Depending upon the voltage of the batteries (6 or 12 VDC), the batteries
must be wired in series, parallel, or series-parallel to provide the correct
voltage. The interconnecting DC wires must be sized and rated exactly the
same as those used between 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”
(2.5 cm) of space between the batteries to provide good air fl ow. DO NOT
mount the batteries directly under the inverter.
CAUTION: Install batteries in a well ventilated area. Batteries
can produce explosive gasses. For compartment or enclosure
installations, always vent batteries to the outside.
Info: To ensure the best performance from your inverter system,
batteries should be of the same size, type, rating, and age. Do not
use old or untested batteries.
2.4.6 Wiring the Inverter to the Battery Bank
CAUTION: The inverter is NOT reverse polarity protected—if the
positive terminal of the battery is connected to the negative terminal
of the inverter and vice versa, severe damage to the
inverter will
occur and this will void the warranty.
Before connecting the DC
wires from the batteries to the inverter, verify the correct battery
voltage and polarity using a voltmeter. If necessary, color code
the cables (with colored tape): red for positive (+), and white for
negative (–) to avoid polarity confusion.
Info: The DC overcurrent device (i.e., circuit breaker or fuse) 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. For maximum protection, install it
within 18 inches (45 cm) of the battery.
Follow the steps below to wire the inverter to the battery bank:
1. Route an appropriately sized DC negative wire (marked white) from the
negative terminal of the battery bank to the inverter’s negative terminal
(Figure 1-2, Item 10; Figures 1-4 & 1-5, Item 11).
2. Mount the fuse/disconnect assembly (or circuit breaker) as near as
practical to the batteries and leave open (i.e., no power to inverter).
WARNING: DO NOT close the DC circuit breaker or connect the
fuse to connect battery power to the inverter at this time. This will
occur after the installation is complete.
CAUTION: If connecting live battery cables to the inverter DC
terminals, a brief spark or arc may occur; this is normal and due
to the inverter’s internal capacitors being charged.
3. Route and connect an appropriately sized DC positive wire (marked red)
from the inverter’s positive DC terminal (Figure 1-2, Item 9; Figures 1-4
& 1-5, Item 12) to one end of the fuse/disconnect assembly (or circuit
breaker).