Enphase IQ8X Microinverter (MC4 Split-Phase) – IQ8X-80-M-DOM-US - Enphase Inverters
Enphase IQ8X Microinverter (MC4 Split-Phase) – IQ8X-80-M-DOM-US - Enphase Inverters
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Enphase IQ8X Microinverter (MC4 Split-Phase) – IQ8X-80-M-DOM-US

Enphase IQ8X Microinverter (MC4 Split-Phase) – IQ8X-80-M-DOM-US

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Enphase IQ8X Microinverter — IQ8X-80-M-DOM-US

Model IQ8X-80-M-DOM-US | 384 VA Peak Output | 240 Vac Split-Phase | 60 Hz | 320–540W PV Input | 43–60V MPPT | US Domestically Manufactured | Grid-Forming Technology | Sunlight Backup™ Capable | MC4 Connectors | IP67 / NEMA 6 | NEC 2014–2023 §690.12 Rapid Shutdown | 25-Year Warranty

384 VA
Peak Output Power
97.3%
Peak Efficiency
Made in USA
US Domestic Manufacture
25 Yrs
Manufacturer Warranty

Product Overview

The Enphase IQ8X-80-M-DOM-US is the US domestically manufactured variant of Enphase's IQ8X Microinverter — sharing identical electrical specifications, certifications, and performance characteristics with the IQ8X-80-M-US while satisfying Buy American Act (BAA) and domestic content requirements applicable to federally funded projects, ITC domestic content bonus adders, and procurement programs that mandate US-manufactured equipment. The "DOM" designation in the part number indicates domestic manufacture at Enphase's US production facility — the same advanced grid-forming microinverter hardware and firmware in a domestically compliant supply chain.

The IQ8X-80-M-DOM-US delivers 384 VA peak output at 240 Vac split-phase (L-L, 180°) and performs per-module MPPT across a 43–60V operating range, supporting high-powered 80-half-cell, 88-half-cell, and 96-cell PV modules rated from 320W to 540W with MC4 input connectors. As part of Enphase's IQ8 series, it features the industry's first grid-forming microinverter architecture — enabling Sunlight Backup™ operation during daytime grid outages without battery storage when paired with an IQ System Controller 2, and supporting full home energy independence configurations with IQ Batteries. NEC 2014 through NEC 2023 §690.12 rapid shutdown compliance is built in with no additional hardware. Backed by Enphase's 25-year limited warranty with connected IQ Gateway.

DOM-US vs. Standard Model — What's Different

The IQ8X-80-M-DOM-US and IQ8X-80-M-US are electrically and functionally identical in every specification. The only difference is country of manufacture and supply chain origin — relevant for specific procurement, incentive, and compliance scenarios.

Attribute IQ8X-80-M-DOM-US IQ8X-80-M-US
Country of Manufacture United States International
ITC Domestic Content Bonus Eligible Not Eligible
Buy American Act (BAA) Compliance Compliant Non-Compliant
Electrical Specifications Identical Identical
Certifications & Listings Identical Identical
Warranty Terms Identical (25 Years) Identical (25 Years)
Installation & Monitoring Identical Identical

ITC Domestic Content Bonus Adder (IRA §48): Under the Inflation Reduction Act, solar projects using US-manufactured components may qualify for a domestic content bonus adder of up to 10 percentage points on the Investment Tax Credit (ITC). Inverters are a qualifying component category. Projects using the IQ8X-80-M-DOM-US instead of the standard model may be eligible for this bonus — consult your tax advisor and review current IRS guidance for project-specific eligibility requirements and documentation standards.

Four System Configurations

The IQ8X's grid-forming capability enables four distinct deployment configurations using the same microinverter hardware — from standard grid-tied solar to full whole-home energy independence.

① Solar Only
Standard grid-tied operation. Each IQ8X converts module DC to 240 Vac AC and feeds home loads and grid. No IQ System Controller or battery required. No Enphase University certification required to commission.
② Sunlight Backup™ — Battery-Free Daytime Backup
During a grid outage, IQ8X microinverters island and continue producing power from solar with no battery required. Requires IQ System Controller 2. Backup power available proportional to available sunlight — approximately 25% of array capacity supports stable essential loads.
③ Home Essentials Backup
Solar plus one or more IQ Batteries backs up essential circuits — refrigerator, lighting, network, device charging — through outages including nights and cloudy periods. Requires IQ System Controller 2.
④ Full Energy Independence
Solar plus larger IQ Battery capacity provides whole-home 24/7 backup through extended outages. Requires IQ System Controller 2. Enphase University certification required to commission this configuration.

Key Benefits

Grid-Forming Architecture — Powers Your Home During Outages Without a Battery: Unlike conventional grid-following microinverters that shut off the instant the utility grid goes down — because they have no AC voltage reference to synchronize to — the IQ8X contains a purpose-built grid-forming chip that autonomously generates its own AC voltage and frequency reference from scratch. When the IQ System Controller 2 islands the home during an outage, the IQ8X microinverters collectively maintain a stable 240 Vac / 60 Hz microgrid for the home's protected loads, powered entirely by real-time solar production. This Sunlight Backup™ capability operates with no battery required — a meaningful, low-cost resilience upgrade for homeowners who experience frequent daytime grid interruptions and need essential circuit power during those events.

Optimized for the Latest High-Voltage 80/88/96-Cell Modules: The IQ8X's 79.5V maximum input voltage and 43–60V MPPT range are specifically engineered for the higher open-circuit voltages (Voc) produced by modern large-format module designs — including 80-half-cut cell, 88-half-cut cell, and 96-cell configurations that have become the dominant format in residential solar module production. These modules regularly produce Voc values that exceed the maximum input voltage tolerance of prior IQ7-series microinverters, making the IQ8X the correct and only Enphase microinverter platform for installations using current-generation 430W–540W large-format modules. The 14A maximum Isc rating also accommodates the higher short-circuit currents produced by modern high-efficiency cell designs.

Per-Module MPPT — Zero Mismatch Loss Across Any Roof Configuration: Every IQ8X-80-M-DOM-US performs independent MPPT at its individual module with no string current coupling to any other module in the system — enabling installations on complex multi-face rooftops where modules on east, west, south, and north faces can be mixed in any combination without any mismatch penalty. A shaded module on the east face produces whatever it can without affecting production on any other face. There is no string voltage calculation to verify, no tilt-angle-match constraint to manage, and no partial-shading production penalty to estimate — every module in the array operates at its own maximum power point at every moment of every day.

No Enforced DC/AC Ratio — Maximum Module Pairing Flexibility: SolarEdge optimizer systems enforce string-level DC/AC power ratio limits that restrict which module wattages can be paired with which inverter sizes. The IQ8X imposes no DC/AC ratio constraint — any module with DC output between 320W and 540W can be paired directly, and module power tolerance up to +5% above nominal is also accommodated. This gives system designers complete freedom to specify the highest-wattage module available in any given project timeline without recalculating string design constraints or replacing inverter equipment — a significant advantage as module wattages continue to increase each product generation.

Built-In Rapid Shutdown — NEC 2014 Through NEC 2023 Compliant: Because the IQ8X performs DC/AC conversion at the module, DC conductors on the rooftop are limited to module-level voltages (79.5V maximum Voc per module) with no long-run high-voltage DC string wiring traversing the roof surface. This inherently satisfies NEC §690.12 roof-surface rapid shutdown boundary requirements for both AC and DC conductors across all NEC code cycles from 2014 through 2023 — without any additional initiator devices, conductor-level shutdown modules, or separate rapid shutdown hardware. As jurisdictions adopt newer NEC cycles, IQ8X installations remain compliant with the updated code without any hardware modification or field retrofits.

Remote Firmware Updates — Future Grid Requirement Compliance via IQ Gateway: The IQ8X's software-defined architecture allows Enphase to push over-the-air firmware updates to every microinverter in the field via the IQ Gateway's internet connection — updating grid support parameters, reactive power curves, ride-through settings, and advanced grid functions to comply with new utility interconnection requirements as they are adopted, without any truck rolls, hardware replacements, or site visits. For installers and system owners, this means IQ8X systems installed today remain fully compliant with grid requirements adopted years from now — eliminating the risk of equipment obsolescence on evolving utility interconnection programs.

Technical Specifications

Manufacturer Enphase Energy
Model Number IQ8X-80-M-DOM-US
Country of Manufacture United States (Domestic)
Product Type Grid-Forming Microinverter — Module-Level Power Electronics (MLPE)
Peak Output Power 384 VA @ 240 Vac | 366 VA @ 208 Vac
Maximum Continuous Output Power 380 VA @ 240 Vac | 360 VA @ 208 Vac
Nominal AC Output Voltage 240 Vac — Split-Phase (L-L), 180° | Also Supports 208 Vac Single-Phase (Grid-Tied Only)
Nominal AC Output Frequency 60 Hz
DC Input Power Range 320 – 540 W
MPPT Voltage Range 43 – 60 Vdc
DC Operating Range 25 – 79.5 Vdc
Maximum DC Input Voltage (Voc) 79.5 Vdc
Maximum Input DC Short-Circuit Current (Isc) 16 Adc
Maximum Module Isc 13 A
Maximum Continuous Operating DC Current 10 Adc
Peak Efficiency 97.3% @ 240 Vac | 97.0% @ 208 Vac
CEC Weighted Efficiency 96.5% (Both 240 Vac and 208 Vac)
DC/AC Ratio No Enforced Limit
Max Units per 20 A (L-L) Branch Circuit 10 Units @ 240 Vac | 9 Units @ 208 Vac
DC Input Connector Stäubli MC4 (Integrated)
Communication Enphase PLC — Over Existing AC Branch Circuit Wiring to IQ Gateway
Monitoring Platform Enphase App (iOS & Android) via IQ Gateway — Real-Time Per-Module Visibility
Backup Configurations Supported Sunlight Backup™ (No Battery) | Home Essentials Backup | Full Energy Independence — Requires IQ System Controller 2
Nighttime Power Consumption 26 mW @ 240 Vac | 12 mW @ 208 Vac
Operating Temperature Range -40°C to +65°C (-40°F to +149°F)
Relative Humidity 4% – 100% (Condensing)
Cooling Natural Convection — No Moving Parts, No Fans
Enclosure Rating IP67 | NEMA Type 6 | Class II Double-Insulated Corrosion-Resistant Polymeric
Dimensions (H × W × D) 212 mm × 175 mm × 30.2 mm (8.3" × 6.9" × 1.2")
Weight 1.1 kg (2.43 lbs)
Warranty 25-Year Limited Warranty — Requires Internet-Connected IQ Gateway

Certifications & Compliance

Grid / Safety (US): CA Rule 21 (UL 1741-SA) | IEEE 1547:2018 (UL 1741-SB) | UL 62109-1 (Class II Double-Insulated Safety)
Canada: CAN/CSA-C22.2 No. 107.1-01 | C22.1-2018 Rule 64-218 Rapid Shutdown
EMC: FCC Part 15 Class B | ICES-0003 Class B
Rapid Shutdown: UL Listed PV Rapid Shutdown Equipment — NEC 2014, 2017, 2020 & 2023 §690.12 Compliant (AC & DC Conductors) — No Additional Hardware Required
Procurement: Buy American Act (BAA) Compliant | ITC Domestic Content Bonus Adder (IRA §48) Eligible — Consult Tax Advisor for Project-Specific Eligibility
Enclosure: IP67 | NEMA Type 6 | Pollution Degree 3 | Approved for Wet Locations
Firmware: Remote Automatic Updates via IQ Gateway — Future Grid Requirement Compliance Without Hardware Changes
Warranty: 25-Year Limited Manufacturer Warranty — Requires Internet-Connected IQ Gateway

Documentation

● Available | Contact us for lead time and pricing

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EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

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Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

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I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

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I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

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You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

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Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

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