enphase IQ System Controller 3M Quick Install Manual page 28

Section C - Wiring
Battery CT will be placed on the L2 wire from the IQ Battery port and the DER port. L2 of IQ Battery and DER port shall be paralleled using
one battery CT.
Scenario 2: CT wiring for PV on both IQ Combiner and DER ports
When Production CT is added to capture L1 lines of PV landing on both the IQ Combiner port and DER port in IQ System Controller 3M or
when the Production CT in the IQ Combiner is extended to L1 wires of PV on both the IQ Combiner port and DER port.
NOTE: When wiring the Production CT in the above configuration, ensure that the wire length of the Production CT does not exceed
16.4 feet.
28
Power IQ Gateway from 20 A.
Terminals of the Quad
breaker at NFT & IQ Gate-
way position. (NFT
pre-wired to 40 A terminals
of the Quad breaker).
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d
IQ System Controller 3M quick install guide