Installation
900-0209-01-00 Rev A
17
Physical Requirements and Conduit
IMPORTANT:
Conduit hubs must connect to the conduit before connecting to the FLEXmax 100.
WARNING: Burn Hazard
The heat sink can become hot when the charge controller is operating. Use caution when
touching it during operation.
All wire lugs and ground terminals are to be tightened to a torque value of 4 Nm (35 in-lb).
If installing in a wet location, any conduit hubs must comply with the requirements of UL 514B.
Run positive and negative cables side by side.
~
Tie or twist cables together as much as possible to allow the inductive currents to cancel.
~
Ensure paired cables pass through the
same
knockout and conduit fittings.
PV and Battery Terminals
WARNING: Shock Hazard
When a PV array is exposed to light, it immediately generates a voltage. Make sure all DC
circuit breakers are OFF (open) BEFORE making any wiring connections. Open both the
battery disconnect devices and the array disconnect devices to ensure isolation of the
controller. Use a DVM to check for voltage on all wires.
CAUTION: Equipment Damage
Each FLEXmax 100 requires its own PV array. DO NOT PARALLEL PV+ and PV-
TERMINALS OF MULTIPLE CONTROLLERS ON THE SAME ARRAY!
The negative (–) PV and negative (–) BAT terminals are connected internally. Only one wire is needed to
connect to the negative (–) wire lugs if the negative (–) PV and BAT conductors are connected at the
negative bus bar. See Figure 14 on page 22 for an example.
Figure 8 Wiring Compartment
See Figure 14 through Figure 16 beginning on page 22 for sample wiring diagrams.
PV+ PV– BAT– BAT+
DC
Terminals
Ground
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