Samlex America SCC-30AB - Manuel (Page 39)

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6
InstallatIon & operatIon
Wiring should be sized as recommended in the Table below:
TABLE: WIRE SIzING
Current, A
Wire Size in AWG
#12 #10 #8 #6 #4 #2
Running Distance in ft.:
Controller to Solar Panel or Controller to Battery
Up to 10 9 15 23 37 58 93
11A to 20A 5 7 12 18 29 46
21A to 30A 3 5 8 12 20 31
NOTES:
• Running distance is the actual distance taking into consideration circuitous route
followed by the wires for installation.
• Current is the total Short Circuit Current Isc of the Solar Panel / Array. For SCC-30AB,
maximum continuous current allowed is 30A.
• If the actual running distance does not match distance shown, base the wire size for the
next higher distance. For example, if Isc is 15A and running distance is 9ft, use AWG # 8
for 12 ft.
This section provides a brief overview of how to get started using the SCC-30AB
controller. However, please review the entire manual to ensure best performance and
years of trouble-free service.
Notes:
• SCC-30AB prevents reverse current leakage at night through an internal MOSFET Switch, so
an external Blocking Diode is not required in the system.
• Connecting wires should be sized to limit voltage drop from 2% to 3%.
• Tighten each terminal clamping screw to 20 inch-pounds of torque.
• SCC-30AB is designed to regulate power from a PV array. Other chargers can be connected
directly to the battery with no effect on SCC-30AB.
Installation Steps
1. As explained earlier in Section 4, SCC-30AB is designed for flush mounting on a
wall panel. It has a face plate and a projecting part at the back consisting of the
PCB with the Terminal Strip, connector for the Battery Temperature Sensor (BTS)
and the DIP switches. The wall / panel will be required to be cut to accommodate
the projections of the circuit board mounted on the back of the faceplate.