Go Power! GP-PWM-25 - Manual (Page 9)

Owner’s Manual | GP-PWM-25 Regulator
9
© 2010 Carmanah Technologies Corporation
Last revised: March 2010
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-25 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-25 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-25 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
115 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-25 is protected, a reverse polarity contact may damage the unit.