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14
5. Ensure that an appropriate electrical connection is made with the battery by using twist-
on wire connectors/Marrettes (not included), and crimping ring connectors (or similar) for
connection to battery terminals.
6. Fasten and secure all loose wires according to the appropriate electrical code.
7. A 10A in-line fuse is recommend to be installed on the positive battery side within 7 inches of
the positive battery post.
NOTE:
● It is recommended to connect the PWM battery output leads to the battery first, then
connect the solar input leads to the solar panel wires.
● Do not short circuit the PWM battery output leads, doing so may damage the PWM controller
and/or battery.
PV/Battery Wire Size
Since the solar output current can vary due to array connection methods, sunlight, and
temperature, the minimum wire size must be in accordance with the maximum array short-circuit
current. The PWM input and output wires will have the same voltage and current. Therefore,
the wire gauge from the solar panel to the PWM and from the PWM to the battery should be the
same. Please refer to the following wire gauge chart for reference:
Wire Length with 10%
Voltage Drop
Wire Length with 3%
Voltage Drop
Wire Gauge with 5A
PV Max Current
Wire Gauge with 10A
PV Max Current
0 to 20 ft 0 to 6 ft 16 AWG 16 AWG
30 ft 10 ft 16 AWG 14 AWG
50 ft 15 ft 16 AWG 12 AWG
65 ft 20 ft 14 AWG 10 AWG
80 ft 25 ft 12 AWG 10 AWG
NOTE: The wire size is only for reference. If there is a long distance between the PV system and
the controller, larger wires can be used to reduce the voltage drop and improve performance. As
shown a shorter wire length and thicker wire gauge can decrease the voltage drop between the
solar panel and PWM controller.
PWM Setting Instruction
1. Press the mode selection button for 3 seconds to enter battery selection mode.
2. Press the mode selection button until the number value that corresponds to the correct
battery appears on the LED readout.
3. Once correct battery type is selected, press the mode selection button for 3 seconds to exit
battery selection mode.
NOTE: For battery selection mode please refer to Mode Selection section.
CAUTION
The default setting is for use with sealed lead-acid batteries. For a different battery type,
please refer to the instruction manual or visit www.furrion.com.
English
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