Enphase IQ8HC Microinverter, 240V Split-Phase or 208V, MC4, for 320–540W Modules – IQ8HC-72-M-US
SKUIQ8HC-72-M-DOM-US-NFC
The Enphase IQ8HC (IQ8HC-72-M-US) is a grid-tie microinverter: one unit mounts under each solar panel and converts that panel's DC power into AC power for the home. It is rated 384 VA continuous on a 240 V split-phase service, or 360 VA...
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Product Overview
The Enphase IQ8HC (IQ8HC-72-M-US) is a grid-tie microinverter: one unit mounts under each solar panel and converts that panel's DC power into AC power for the home. It is rated 384 VA continuous on a 240 V split-phase service, or 360 VA on a 208 V single-phase connection.
Because each panel has its own microinverter, shade or a problem on one panel does not pull down the rest of the array the way it can on a single string inverter. The microinverters report panel-level production over the AC wiring (power line communication) to an Enphase IQ Gateway, which connects the system to the Enphase App.
On its own, an IQ8 system shuts down during a grid outage like any grid-tie system. Enphase's datasheet says IQ8 microinverters can keep producing during an outage only with an Enphase IQ System Controller, which disconnects the home from the grid. For new systems, that means a current IQ System Controller 3 or 3G (Enphase's store says to use the 3G for all new IQ8 installs); the IQ System Controller 2 also named on the datasheet applies only to existing systems. These systems normally include Enphase IQ Batteries.
Best For
- Residential solar on 240 V split-phase or 208 V service: Enphase lists the IQ8HC for 240 V split-phase (L-L) or 208 V single-phase (L-L, 120°) connection. At 208 V it connects between two legs of the service, and output and branch limits are lower.
- Panels in the 320–540 W range: Enphase lists 320–540 W as the commonly used module pairing for the IQ8HC. The panel must also stay within the DC voltage and current limits in the table below.
- Roofs with partial shade or several orientations: Each panel is converted separately, so panels facing different directions can share a system.
- Enphase systems that may add batteries later: IQ8 microinverters are part of the Enphase Energy System with IQ Batteries and IQ System Controllers (see Important Considerations for limits).
Key Features & Specifications
| Specification | Details |
|---|---|
| Product type | Grid-tie microinverter (one per PV module), Enphase IQ8 Series |
| Model / ordering SKU | IQ8HC-72-M-US or IQ8HC-72-M-DOM-US (same ratings per Enphase; the DOM version is made in the U.S.) |
| Grid connection | 240 V split-phase (L-L), 180°, range 211–264 V; or 208 V single-phase (L-L), 120°, range 183–229 V; 60 Hz |
| Peak output power | 384 VA at 240 V; 366 VA at 208 V |
| Maximum continuous output power | 384 VA at 240 V; 360 VA at 208 V. Enphase notes labels may show 380 VA or 384 VA depending on production date; all units are certified for 384 VA. |
| Maximum continuous output current | 1.60 A at 240 V; 1.73 A at 208 V |
| Maximum units per 20 A branch circuit | 10 at 240 V; 9 at 208 V (Enphase notes local limits may vary) |
| Commonly used module pairings | 320–540 W. Enphase states there is no enforced DC/AC ratio; check module fit in Enphase's compatibility calculator. |
| MPPT voltage range | 29.5–45 V |
| Operating range | 18–58 V |
| Minimum / maximum start voltage | 22 V / 58 V |
| Maximum input DC voltage | 60 V |
| Maximum continuous input DC current | 14 A |
| Maximum input DC short-circuit current / maximum module Isc | 25 A / 20 A |
| Efficiency | CEC weighted 97.0% at 240 V and 96.5% at 208 V; peak 97.3% at 240 V and 97.2% at 208 V |
| DC connector | Stäubli MC4 |
| AC connector | Enphase AC connector (for Enphase IQ Cable) |
| Communication | Power line communication (PLC) to an Enphase IQ Gateway |
| Enclosure | Class II double-insulated, corrosion-resistant polymeric enclosure; NEMA Type 6, outdoor |
| Ambient temperature range | −40°C to 65°C (−40°F to 149°F) |
| Dimensions; weight | 212 × 175 × 30.2 mm (8.3 × 6.9 × 1.2 in); 1.1 kg (2.43 lb) |
| Rapid shutdown | UL Listed as PV rapid shutdown equipment; Enphase states it conforms with NEC 2014–2023 section 690.12 when installed per Enphase instructions |
| Certifications (per Enphase) | CA Rule 21 (UL 1741-SA), IEEE 1547:2018 (UL 1741-SB 3rd Ed.), UL 62109-1, FCC Part 15 Class B |
| Warranty (per Enphase) | Enphase describes a limited warranty of up to 25 years; see Enphase's current warranty terms for conditions |
| Source | Enphase IQ8HC datasheet DSH-00047-10.0-EN-2026-07-30 |
What You May Also Need
Usually required
- Enphase IQ Gateway (or an IQ Combiner with a built-in gateway): Enphase's datasheet says grid-profile settings are changed through an IQ Gateway during installation, and monitoring in the Enphase App runs through it.
- Enphase IQ Cable for 240 V systems: The microinverter's AC connector plugs into Enphase IQ Cable, which runs along the array and connects the microinverters on each branch. Choose the cable spacing for your panel size and orientation from Enphase's IQ Cable documents.
- Mounting rails and attachments: Each microinverter mounts to the racking under its panel. Check that your racking supports microinverter mounting.
May be required
- Disconnects and breakers: Each branch of microinverters needs its own 20 A (maximum) breaker, and many systems also need an AC disconnect.
- Enphase IQ Combiner: Combines several microinverter branches and can house the IQ Gateway.
- PV cables: Panel leads must reach the microinverter's MC4 inputs. Check the connector type on any extension cable you add.
Optional upgrades
- Enphase IQ Battery with an IQ System Controller: Adds storage and, with the system controller, backup during outages. Choose models from Enphase's current Enphase Energy System documents.
- Consumption monitoring CTs for the IQ Gateway: Let the Enphase App show home energy use as well as solar production.
Check current manufacturer documentation before combining components, especially batteries, inverters, communications equipment and system-control hardware.
Important Considerations
- 240 V split-phase or 208 V single-phase. At 208 V the IQ8HC is rated 360 VA continuous and 9 units per 20 A branch, instead of 384 VA and 10 units at 240 V.
- Check module voltage and current. The panel's cold-weather Voc must stay at or below 60 V, and its Isc at or below 20 A. Use Enphase's compatibility calculator to confirm a specific panel model.
- Mixing with IQ7 systems. Enphase's datasheet limits adding IQ8 microinverters to an existing IQ7 system on the same IQ Gateway to two setups. One is solar only. The other is solar plus IQ Battery 3/10 or IQ Battery 5P, grid-tied or with backup using IQ System Controller 3/3G/3M and IQ Meter Collar. IQ7 microinverters cannot be added to an existing IQ8 site on the same gateway.
- Do not mix DC connectors. Connect the Stäubli MC4 inputs only to matching MC4 connectors.
- Grid profile and permits. The utility may require a specific grid profile, which the installer sets through the IQ Gateway. Grid-connected systems need utility interconnection approval and are installed by qualified installers under local electrical codes.