4
Valid from 1
st
September 2009 / IMW-ES-C_US_010909_ETL
Figure 2. Junction Box Components
• ES-C series panels are factory wired for 12V nominal operation and are not intended to be reconfigured for other
voltages.
• The electrical connection block has three (3) double screw terminals; positive (+), negative (-) and spare. It is
recommended that the top screws of the terminals be reserved for the bypass diodes, and the output wiring be
connected only to the bottom screws. Junction box components are described in Figure 2.
• Match the polarities of cables and terminals when making the connections; failure to do so may result in damage
to the panel.
• The Spare terminal can be used to wire arrays at different voltage configurations. Figure 3. Shows examples of
the standard 12, 24 and 48 V configurations.
Figure 3. Wiring Examples
BLACK
RED
BLACK
RED
BLACK
RED
BLACK
RED
BLACK
RED
12 V (2 PARALLEL)
24 V (2 SERIES)
48 V (4 SERIES)
