VertaMax User Manual
Revision 1.1
IMPORTANT:
For 1500 Watt units, use a minimum of 6 AWG wire with a wire length not to exceed 6 feet*;
using all four battery posts on the inverter.
IMPORTANT:
For 2500 Watt units, use a minimum of 2 AWG wire with a wire length not to exceed 6 feet*;
using all four battery posts on the inverter.
* For wire runs longer than 6 feet, consult a Wire Gauge Chart to safely determine what gauge of wire will be
needed.
2) Prepare Cables to connect the power source to the inverter (not included). The cables should be as short
and thick as possible to reduce the voltage drop between the power source and the inverter as it draws
current from the power source.
a) Inverter end of the cable: Terminate copper wire with a 0.330” diameter, tin-plated copper lug. It is
recommended to cover the lug barrel with 1 inch of heat shrink tubing.
b) Power Source end of the cable: Terminated with a lug or other connector that provides a secure, low
resistance connection. For example, if the power source is a battery, the cable must be terminated
with a battery terminal that clamps to the post on the battery.
IMPORTANT:
If there is an excessive voltage drop and the voltage at the inverter drops below 10 volts,
the inverter will shut down.
3) Wire the positive cable(s) through user-supplied UL-listed fuse (e.g. Buss Fuse ANL-250 or equivalent)
as shown below. The fuse should be as close to the battery as possible. The specific fuse ampere rating
should be sized to allow operation of all your DC powered equipment but cannot exceed the maximum
current (amp) rating of the inverter by more than 40%.
4) Be sure the inverter power button is in the ‘OFF’ position and the DC Power source is also off.
5) Connect the cable end with the 0.330” lug to the Power Input Terminals on the DC Input end of the
inverter as shown below. The red terminal is positive (+) and the black terminal is negative (-).
Use M8 Washers (provided) as needed to ensure the threaded end cap is fully tightened and the Cable
Lug is secured.
IMPORTANT:
When fully tightened, the Cable Lug should not be able to rotate around the Inverter
connection post. Check and tighten the end caps periodically as they can become loose from vibrations
or thermal cycling.
Page 6 of 16
windy
nation
