8R
Vehicular
Your Inverter’s Nominal DC Input Voltage must match the voltage of your battery or batteries—12 Volts in most vehicular applications.
In most vehicles, the Inverter will be connected to the main battery within your vehicle's electrical system. However, it is also possible to
connect your Inverter to one or more dedicated auxiliary (house) batteries which are isolated from the drive system to prevent possible
draining of the main battery.
12 Volt Inverter/Charger
12 Volts
12 Volts
3
5
12 Volt Main Battery Connection
12 Volt Alternator Vehicle Battery Ground 12 Volt Main Battery 12 Volt Auxiliary (House) Battery UL-Listed Fuse (mounted within 18
inches of the battery) Battery Isolator Large Diameter Cabling, Maximum 2/0 Gauge to Fit Terminals 8 AWG (minimum) Ground Wire
876
54321
12 Volt Inverter/Charger
12 Volts
12 Volts
12 Volts
12 Volt Main and Auxiliary (House) Battery Connection (Isolated Parallel)
1
4
1
6
2
2
5
7
3
2
8
8
Battery Connection
• Connect DC Wiring: Though your
Inverter is a high-
efficiency trans-
former of electricity,
its rated output
capacity is limited by
the length and gauge
of the cabling running from the battery to the
unit. Use the shortest length and largest diam-
eter cabling (maximum 2/0 gauge) to fit your
Inverter’s DC Input terminals. Shorter and
heavier gauge cabling reduces DC voltage
drop and allows for maximum transfer of
current. Your Inverter is capable of deliver-
ing peak wattage at up to 200% of its rated
continuous wattage output for brief periods
of time. Heavier gauge cabling should be
used when continuously operating heavy
draw equipment under these conditions.
Tighten your Inverter and battery terminals
to approximately 3.5 Newton-meters of
torque to create an efficient connection and
to prevent excessive heating at this connec-
tion. Insufficient tightening of the terminals
could void your warranty. See separate
Specifications page for Minimum
Recommended Cable Sizing Chart.
• Connect Ground: Using a #8 AWG wire
or larger directly connect the Main Ground
Lug to the vehicle’s chassis or earth ground.
See the Feature Identification section to locate
the Main Ground Lug on your specific
Inverter model. All installations must com-
ply with national and local codes and ordi-
nances.
• Connect Fuse: NEC (National Electrical
Code) article 551 requires that you connect all
of your Inverter’s positive DC Terminals
directly to a UL-listed fuse(s) within 18 inch-
es of the battery. The fuse’s rating must equal
or exceed the Minimum DC Fuse Rating list-
ed in your Inverter’s specifications. See
Specifications for fuse recommendations. See
diagrams below for proper fuse placement.
Connect your Inverter to your batteries using the following procedures:
WARNING! • Failure to properly ground your Inverter to a vehicle’s chassis or earth ground may
result in a lethal electrical shock hazard.
• Never attempt to operate your Inverter by connecting it directly to output from an
alternator rather than a battery or battery bank.
• Observe proper polarity with all DC connections.
DC Connectors
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