Manual

3. LOCATION: - The SC3/20 should be mounted where it can be easily seen and reached to take
the best advantage of the metering. Carefully consider how the wires are to be run from the
solar panel to the controller, and from the controller to the battery. The SC3/20 should be
mounted as close to the battery as possible, and should be mounted on a vertical surface to
aid in cooling.
FLUSH MOUNT: The SC3/20 is designed to be recessed into the side of a cabinet or wall
where the wiring can be accessed from the back. Allow 2 - 3 inches behind the unit.
WALL MOUNT: The SC3/20 with 4x7 BOX is designed to be mounted on the surface of a
cabinet or wall. Wiring can be run down the wall or through a hole in the wall directly below
the controller.
4. PROTECTION REQUIREMENTS: - The unit should be mounted indoors, out of the weather,
unless a weatherproof enclosure is used. Avoid mounting in direct sunlight or in a hot
environment. Basically, do not mount anywhere you would not put a TV or stereo.
5. PREPARE THE LOCATION PRIOR TO WIRING:
FLUSH MOUNT: Use the template provided to position and mark the cut-out and the four
mounting holes. Make the cut-out using a key hole or jig saw. Start by drilling holes in the
corners, then saw between the holes.
WALL MOUNT: Mount the knock-out box to the wall using suitable fasteners.
6. COMPLETE THE INSTALLATION OF PANEL, BATTERIES AND LOAD: - Follow the
manufacturer's instructions for mounting and wiring the solar panel, batteries and the load.
7. SELECT WIRE:
WIRE TYPE: - It is recommended that stranded wire rather than solid wire be used
whenever possible, because stranded wire does not fatigue and cause loose
connections over time as easily as solid wire does.
WIRE SIZE: - Wire should be sized of sufficient gauge to safely handle the rated current of
the system and to limit voltage drop. The wiring used within the controller is of sufficient
gauge to handle the currents carried, and these wires are short enough that voltage
drops are not a concern, but larger gauge may be appropriate for runs to the array or
battery.
Recommended Wire Size: # Solar Panels (50 watt) Minimum Wire Gauge
1 # 14
2 # 12
3 - 6 # 10
8. REMOVE POWER FROM BATTERY / PANELS: - Disconnect power from the batteries and
panels prior to running the wires to the controller.