9
•
Connect the GROUND terminal to earth or chassis ground using at least a # 8 wire. It is
recommended to crimp a ring type terminal to the ground wire and attach it to the ground lug.
WARNING
Do not operate the inverter without the ground connection. Electrical shock hazard
could result.
•
Double check all wiring for proper polarity and there are no frayed wires.
•
Install the fuse and reconnect the wire to the battery. Note, a slight spark and beep from the
inverter is normal when the unit is first connected to 12 volt power.
Advanced Installation
Large inverters can draw high currents from your battery and charging system especially when used
with appliances and tools that use a lot of power. In these applications, you may need to increase the
capacity of your 12 volt system. There are several ways to do this.
High Capacity Batteries
You can purchase high capacity batteries that are specially designed for deep discharge operation.
Contact your automotive or RV specialist for more information.
Multiple Batteries
In systems with multiple batteries, you typically wire the system with the batteries in parallel
(negative to negative and positive to positive) with a battery isolator between the positive
terminals. The isolator allows a single alternator to charge both batteries but lets the inverter only
use the second battery so the vehicle’s battery is not discharged during operation. Contact your
automotive or RV specialist for more information about battery isolators and wiring.
Larger Alternator
Typical automotive alternators may not be able to supply the power required for continuous
operation of the inverter at high power usage. Contact your automotive or RV specialist for more
information about larger output alternators.
Remote On/Off Jack
The SPV-8, SPV-10, SPV-15 and SPV-25 contain a jack which interfaces with an optional remote
on/off switch. Contact Sima for additional information.
CAUTION:
Do not plug a telephone into this jack as damage or improper operation
may occur.
Step #3: Testing the Power Inverter
After you make sure the 12 volt power is wired properly to the power inverter, with nothing plugged
into the 115 VAC outlets, turn the power switch on the power inverter to On. The VOLTAGE meter
should indicate between 12 and 14 volts.
