Specialty Concepts SC1 - Manual (Page 6)

9. NOTE WIRE POLARITY: - Insure that the polarity of the wires is correctly marked, using
colored wires or tags. Incorrect polarity should not damage the SC1, but incorrect operation
would result.
10. COMPLETE ARRAY AND BATTERY CONNECTIONS: - Connections to the SC1 terminal
block should be made with just the bare wire (not crimped spade or ring lugs unless the lugs
are crimped AND soldered)
11. COMPLETE LOAD CONNECTIONS: - Refer to wiring diagram (FIGURE 1). DC loads not
exceeding the rated SC1 load current (see specification section “Load Current, Continuous”)
can be connected to the load terminals of the SC1 and they will automatically be disconnected
in the event of a low-voltage condition. Higher current, or inductive loads such as pumps,
motors or inverters should be connected directly to the battery, using properly rated over-
current protection devices (fuses or circuit breakers).
12. BATTERY VOLTAGE SENSE CONNECTIONS: - The factory has installed two jumpers onto
the terminal block. They connect the "BATTERY VOLTAGE SENSE" (positive and negative)
terminal to their respective "BATTERY" terminals. These jumpers should remain in place if
the SC1 is located within 5-10 feet of the batteries and if large enough wire is used to
minimize voltage drops to less than 2%.
If the SC1 is at a greater distance from the batteries and/or if the voltage drop in the
battery wires exceeds 2%, then the jumpers should be removed and replaced with another
circuit running directly to the battery terminals. This is a low current, voltage sensing circuit
that can be wired in 16 AWG wire. Proper over-current protection should be added on the
positive side. This connection will allow the SC1 to accurately measure battery voltage.
13. INSTALL FUSING AS NEEDED: - Add circuit protection where needed. A 30 amp fuse
(or 50 amp with Option P) should be installed on the Battery (+) run of the SC1. Fusing is also
advised for the battery voltage sense connection, if included. The load is already protected by
the built-in circuit breaker of the SC1.
14. ATTACH TEMPERATURE COMPENSATION CABLE (OPTION A): - If included. See
Temperature Compensation section
15. MAKE NEEDED ADJUSTMENTS TO VOLTAGE SET-POINT (OPTION T): - If included.
See Setting/Adjustments section