Suggested Minimum Wire Gauge
(Cable length 25 ft. max. from solar array to battery bank)
55 Watt Solar Module
#14 Wire Gauge
80 Watt Solar Module
#12 Wire Gauge
100 Watt Solar Module
#10 Wire Gauge
110 Watt Solar Module
#10 Wire Gauge
200 Watt Solar Module
#10 Wire Gauge
IMPORTANT: : Identify the polarity (positive and negative) on the cable used for the battery and solar module. Use
Note
colored wires or mark the wire ends with tags. Although the GP-SB-PWM is protected, a reverse polarity contact may
damage the unit.
4. Wiring the GP-SB-PWM. Wire the GP-SB-PWM according to the wiring schematic in Section 7. Run wires from the solar array and
the batteries to the location of the GP-SB-PWM. Keep the solar array covered with an opaque material until all wiring is completed.
IMPORTANT: All wiring must be in accordance to National Electrical Code, ANSI/NFPA 70. Always use appropriate circuit
Note
protection on any conductor attached to a battery.
5.
Connect the battery wiring to the controller first and then connect the battery wiring to the battery.
6.
Torque all terminal screws per the following:
Wire Size AWG
12
10
8
6
4
With battery power attached, the controller should power up and display information. Connect the solar wiring to the controller and
remove the opaque material from the solar array. The negative solar array and battery wiring must be connected directly to the con-
troller for proper operation. Do not connect the negative solar array or negative battery controller wiring to the chassis of the vehicle.
7. Mounting the GP-SB-PWM. Mount the GP-SB-PWM to the wall using the included four mounting screws.
IMPORTANT: You must set the battery type on the GP-SB-PWM before you begin to use the controller (follow steps in
Note
Section 7). The default battery setting is for AGM batteries.
Your GP-SB-PWM should now be operational. If the battery power is low and the solar array is producing power, your battery should
begin to charge.
8. Re-torque: After 30 days of operation, re-torque all terminal screws to ensure the wires are properly secured to the controller.
WARNING: This unit is not provided with a GFDI device. This charge controller must be used with an external GFDI device
as required by Article 690 of the National Electric Code for the installation location if required.
WARNING: When a ground fault is indicated, battery terminals and connected circuits might be ungrounded and hazardous.
[page 8] | gpelectric.com
Stranded Copper 90°C Wire
Rated Torque (in-lbs)
INSTALLATION INSTRUCTIONS
20
20
25
35
35
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