enphase COMMS-KIT-INT-02 Quick Install Manual page 3

Control (CTRL) wiring between system components
3
Control wiring guidance for the installing IQ Battery 5P(s):
Refer to the following wiring sequences to understand the position of header with termination resistor, wiring order, and drain wire termination location.
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NOTE: Total length of CTRL wiring across the system should not exceed 100 meters to ensure system operates as per specifications.
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NOTE: Ensure following guidelines are followed to avoid failures during system commissioning:
• One header with termination resistor should be installed on the component located at each end of the control network.
• The drain wire should only be terminated on one end of control wiring between system components.
• It is recommended that the drain wire be terminated at the component from which the control wiring for the section is initiated.
Following are the two common wiring sequences:
Sequence 1: Communications Kit 2 INT - IQ Battery 5P(s)
Sequence 2: IQ Battery 5P - Communications Kit 2 INT - IQ Battery 5P