Specialty Concepts SC3/10) - Manual (Page 4)

5. WIRE SELECTION: - It is recommended to use stranded wire rather than solid wire whenever
possible, because stranded wire does not fatigue and cause loose connections over time as
easily as solid wire does.
The wiring from the array and to the batteries can be a larger gauge than the wires in the
SC3/10. The wiring in the controller is of sufficient gauge to handle the currents carried, and
the length of these wires is short so it will not reduce the voltage. Larger gauge may be
appropriate for the long runs to the array to minimize voltage losses.
Recommended Wire Size: # Solar Panels Minimum Wire Gauge
1 # 14
2 # 12
3 # 10
6. REMOVE POWER FROM BATTERY / PANELS: - Disconnect power from the batteries and
panels prior to running the wires to the controller.
7. RUN SYSTEM WIRING: - Run the wires from the battery and solar panel to the location
selected for the controller.
8. NOTE WIRE POLARITY: - Make sure to correctly mark the polarity of the wires using colored
wires or tags. Incorrect polarity may blow the front panel fuse or damage the SC3/10.
Some vehicles or solar kits use black and white wires for connection to the battery. These
kits will label the white wire as battery negative and the black wire as battery positive. Black
and red wiring systems will label the black wire as negative and the red wire as positive.
When these systems interconnect, the black wire does not connect to the black wire.
CAREFULLY NOTE BATTERY POLARITY AND WIRE COLORS!
9. PREPARE THE LOCATION FOR INSTALLATION: -
FLUSH MOUNT (No junction box): - Mark a cut-out 3 ½ inches wide and 2¾ inches high,
this should be centered in the area chosen for the controller. Make the cut-out using a
key hole or jig saw. Start by drilling holes in the corners, then saw between the holes.
Mark and drill the four mounting holes.
MOUNTING WITH JUNCTION BOX: - Make any necessary preparations to the surface as
needed for the particular junction box.
10. SC3/10 CONNECTION: - Wire the SC3/10 according to Figure 1. When possible, solder the
wires before installing the wire nuts, then wrap the wire nuts and wires with electrical tape.
11. INSTALL FUSING IF NEEDED: - Add additional circuit protection if needed.
12. SC3/10 MOUNTING: - Mount the SC3/10 to the wall or box front using the four screws
provided or other suitable fasteners. Slip the washers (supplied) over the screws so the
washers are between the back of SC3/10 and the wall (or box). This provides an air gap for
added cooling. INSTALLATION OF THESE WASHERS IS REQUIRED FOR PROPER
COOLING DURING OPERATION.
13. RECONNECT BATTERY AND ARRAY POWER -