Go Power! GP-SW300 - Manual (Page 6)

Pure Sine Wave Inverter
GPSW-150
GPSW-300
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6
3.1.2 Rear View GPSW-150
Operation of the inverter without a proper ground
connection may result in an electrical safety hazard.
a. Ventilation port:
Do not obstruct, allow at least 1 inch (2.54 cm) for air flow.
b. Connect the chassis ground to the vehicle chassis using a #8 AWG
wire.
c. DC Input:
Included: 3 foot (0.91 m) cable with automobile DC plug.
Use the DC input terminal to connect to a battery or other power
source: black is negative (–), red is positive (+). A reverse polarity
connection will blow the internal fuse and may permanently damage the
inverter. Observe the DC Input rating.