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Main panel <br />(Back-fed panel) <br />IQ Series Microinverters <br />IQ EV Charger <br />Connect to LC <br />CTs/Cons CTs <br />Connector <br />N <br />N13 <br />RS+GNDRS- <br />NO <br />NC <br />C <br />EIP comm. LED <br />USB1 <br />USB2 RSD LED <br />Status LED <br />Reset <br /> button <br />Main DER <br />breaker <br />AP mode LED <br />AP mode button <br />Power production LED <br />Device comm. LED <br />Device scan button <br />Backfeed lugs <br />with DER relay <br />PV bus DER bus <br />DER centre <br />IQ PV2 <br />IQ PV3 <br />IQ PV1 <br />11 <br />_ <br />N <br />3 4 <br />12 <br />A1 <br />5 6 7 8 <br />910 <br />A2 <br />Combiner controller Board <br />( C C B ) <br />Integrated Production CT <br />Integrated Battery CTs <br />Gateway <br />1 2 3 4 D 1 2 3 4 D <br />CT8(L2) <br />IQ PV4 <br />IQ B2 <br />IQ B1 <br />IQ EVC <br />PVA <br />PF <br />CT2, CT3 <br />CT1 <br />CT4, CT5 <br />CT(L1)CT(L1)CT(L2)CT (L2) <br />IQ Combiner 6C <br />Connect to EVSE <br />CT connector on <br />the gateway <br />Utility meter Grid <br />IQ Battery IQ Battery <br />Load Controller <br /> <br />B1 <br />LCB <br />CT6, CT7 <br />1 <br />1 2 3 4 D <br />2 <br />1 2 3 4 D <br />CT9, CT10 <br />(L1,L2) <br />Consumption CTs <br />Aggregate Power <br />Export Limit <br />Integrated Backfeed CTs <br />Additional loads <br />11 <br />8Home loads <br />Figure 10: Aggregate power export limit in the grid-tied configuration <br />5.4.2 Aggregate power export limit in the grid-forming configuration <br />In this configuration, the aggregate export power (Wexport) to the utility grid is monitored by the <br />Consumption CTs placed between the main panel and the utility meter. The power produced by the PV <br />and/or battery system is controlled appropriately to keep Wexport less than or equal to the set limit. <br />Enphase Power Control features <br />39 © 2025 Enphase Energy Inc. All rights reserved. August 2025 <br />TEB-00269-2.0-EN <br />IQ EV Charger <br />N13 <br />RS+GNDRS- <br />NO <br />NC <br />C <br />EIP comm. LED <br />USB1 <br />USB2 RSD LED <br />Status LED <br />Reset <br /> button <br />AP mode LED <br />AP mode button <br />Power production LED <br />Device comm. LED <br />Device scan button <br />Backfeed lugs <br />with DER relay <br />PV bus DER bus <br />DER centre <br />IQ PV2 <br />IQ PV3 <br />IQ PV1 <br />11 <br />_ <br />N <br />3 4 <br />12 <br />A1 <br />5 6 7 8 <br />910 <br />A2 <br />Combiner Controller Board (CCB) <br />Gateway <br />1 2 3 4 D 1 2 3 4 D <br />CT8(L2)IQ PV4 <br />IQ B2 <br />IQ B1 <br />IQ EVC <br />PVA <br />PF <br />CT2, CT3 <br />CT1 <br />CT4, CT5 <br />CT(L1)CT(L1)CT(L2)CT (L2) <br />IQ Combiner 6C <br />Load Controller <br /> <br />B1 <br />LCB <br />CT6, CT7 <br />1 <br />1 2 3 4 D <br />2 <br />1 2 3 4 D <br />N <br />Grid <br />Backed up <br />home loads <br />Non-backup <br />heavy loads <br />IQ BatteryIQ Series Microinverters IQ Battery <br />Connect to EVSE <br />CT connector on <br />the gateway <br />Integrated Battery CTs <br />Integrated Production CT <br />Integrated <br />Consumption CTs <br />Aggregate Power <br />Export Limit <br />Main DER <br />breaker <br />Integrated Backfeed CTs <br />11 <br />Main-meter combo <br />with IQ Meter Collar <br />behind the utility meter <br />(back-fed panel) <br />Figure 11: Aggregate power export limit in grid-forming configuration, Consumption CTs placed between the main service <br />breaker and the meter <br />5.4.3 Compliance with regulations <br />Utilities in certain geographies require solar energy systems to limit their aggregate export power sent <br />back to the utility grid. In such regions, the Enphase installers can configure the aggregate export <br />power limit equal to or below the level required by the utility using the Enphase Installer App or <br />Enphase Installer Portal. The Enphase Energy System automatically curtails PV production to ensure <br />compliance with the local jurisdiction by adhering to the set aggregate power export limit. <br />Enphase Power Control features <br />40 © 2025 Enphase Energy Inc. All rights reserved. August 2025 <br />TEB-00269-2.0-EN