Schumacher PI-1500 - Manual (Page 7)

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Grounding the PI-1500
To avoid electrical shock, it is necessary to ground the
PI-1500 Inverter as well as the device powering it. The
inverter should be grounded using #8 AWG copper wire
(not included).
Note: do not turn on the inverter or the power source
until the inverter and the power source are grounded.
1. Turn off the PI-1500.
2. locate the chassis ground screw underneath the
negative terminal on the left side of the inverter. Unscrew
the two hex nuts and one washer.
3. Strip the insulation of the wire back 1.5 inches and in
between the two washers, wrap the bare end of the
#8 AWG copper wires around the threaded screw
extension.
4. Holding the wire in place, screw the hex nut on the
threaded screw extension and then screw on the last
hex nut to secure the wire connection.
5. Using the other washer and hex nut, secure the opposite
end of the wire and attach it appropriately so the inverter
is grounded correctly.
a. Vehicle – connect to the chassis or unpainted frame
part or engine block of vehicle.
b. Boat – connect to boat grounding system.
c. Fixed location – connect to a ground rod or other
appropriately rated ground.