SSI Series Owners Manual
http://dimensions.sensata.com
Page
11
4-2.
DC Wiring Connections
4-2-1
Follow this procedure to connect the battery cables to the DC input terminals of the inverter.
The cables should be as short as possible (less than 10 feet / 3 meters ideally) and large
enough to handle the required current in accordance with the electrical codes or regulations
applicable to the installation.
(a)
Cables that are not an adequate gauge (too narrow) or too long will deteriorate inverter
performance such as poor surge capability and frequent low-input voltage warnings and
shutdowns.
(b)
These low input voltage warnings are due to DC voltage drop across the cables from the
inverter to the batteries.
(c)
The longer and narrower the cables, the greater the voltage drop. Increasing DC cable size
helps improve the situation.
(d)
Sensata Technologies recommends the following cables for optimum inverter performance:
Model #
Wire AWG
1-10’
Wire AWG
11-15’
Wire AWG
16-20’
Inline Fuse or
Circuit Breakers
SSI-12-HF3.5N
# 8
# 6
# 6
Up to 40 amps
4-2-2
Connect the cables to the power input terminals on the rear panel of the inverter. The red
terminal represents positive
POS.
[ + ]
and black terminal represents negative
NEG
.
[ – ]
.
Insert the cables into the terminals and tighten the screw to clamp the wires securely.
Sensata Technologies recommends using only high quality (SGX) insulated copper wire and
keep the cable length short, a maximum of 3 to 6 feet.
The installation of a fuse must be on a positive cable. Failure to place a fuse on ―+‖ cables running
between the inverter and battery may cause damage to the inverter and will void warranty.
