Owner`s manual
GP-PWM-30 
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5.0 Installation Instructions
1.  Prepare for mounting. Use the template provided at the end of 
the manual to mark the four mounting holes and the “cutting line 
for flush mounting.” 
2.  Complete the installation of the solar modules.  If this GP-
PWM-30 was purchased as part of a Go Power! Solar Power Kit, 
follow the Installation Guide provided. Otherwise, follow 
manufacturer’s instructions for solar module mounting and 
wiring. 
3.  Select wire type and gauge. If this GP-PWM-30 was 
purchased as part of a Go Power! Solar Power Kit, appropriate 
wire type, gauge and length is provided. Please continue to 
Section 6, “Operating Instructions.” If the GP-PWM-30 was 
purchased separately, follow the instructions included here. 
Wire type is recommended to be a stranded aluminium UV resistant wire. 
Wire fatigue and the likelihood of a loose connection are greatly reduced 
in stranded wire compared to solid wire. Wire gauge should be able to 
sustain rated current as well as minimizing voltage drop. 
Suggested Minimum Wire Gauge 
(Cable length 25 ft. max. from solar array to battery bank) 
 50 Watt  #14 Wire Gauge 
 80 Watt  #12 Wire Gauge 
 95 Watt  #10 Wire Gauge 
110 Watt  #10 Wire Gauge 
125 Watt  #10 Wire Gauge 
160 Watt  #10 Wire Gauge 
240 Watt  #10 Wire Gauge 
Terminal Screw Torque   16 inch pounds (1.8N.m) 
IMPORTANT: Identify the polarity (positive and negative) on the 
cable used for the battery and solar module. Use colored wires or 
mark the wire ends with tags. Although the GP-PWM-30 is 
protected, a reverse polarity contact may damage the unit. 










