Control (Ctrl) Wiring Between System Components - enphase IQ System Controller 3 INT Quick Install Manual

Section B - Wiring
Control (CTRL) wiring
between system components
Control wiring guidance for the Enphase Energy System:
Refer to the following wiring sequences to understand the position
of header with termination resistor, wiring order, and drain wire
termination location.
NOTE: Ensure following guidelines are followed to avoid
failures during system commissioning:
• One header with termination resistor should be installed
on each component that is at the extreme end of the
control network.
Sequence 1: IQ System Controller 3 INT → IQ Battery(s) 5P
Sequence 2: IQ Battery(s) 5P → IQ System Controller 3 INT
IQ System Controller 3 INT Quick Install Guide
• The drain wire should only be terminated on one end of
control wiring between system components
• It is recommended to terminate drain wire at the
component from which the control wiring for the section
is initiated
• Same conduits can be used for power and control wire
routing with Enphase recommended cables
Following are three indicative wiring sequences:
NOTE: Total length of CTRL wiring
across the system cannot exceed
75 meters to ensure system operates
as per specifications.
NOTE: Total length of CTRL wiring
across the system cannot exceed
75 meters to ensure system operates
as per specifications.
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