0 installation instructions – Go Power! GP-PWM-30 User Manual

Page 8

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Solar Controller




© 2012 Carmanah Technologies Corporation

September 2012

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 mountin


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

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

n 6, “Operating Instructions.” If the GP-PWM-30 was

purchased separately, follow the instructions included here.

Wire type is recommended to be a stranded copper 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.