7.9 × 10.4 × 1.4 in

MicroinverterEnphase Energy

Enphase Energy IQ8P-3P-72-E-US

Name: Enphase Energy IQ8P-3P-72-E-US
Brand: Enphase Energy

Microinverter. 2 models, 380 W–475 W AC at 208 V.

UL 1741 SBCEC listed · Nov 21, 2023Rapid shutdownInstalled in 1 SoCal permit

Model

Rated AC power475 W
CEC weighted efficiency97.5%
Max DC input63 V
Warranty25 years

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 2 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
IQ8H-3P-72-E-US +1 SKU	380 W	208 V	380 W	380 W	97.0%	28–45 V	Nov 21, 2023	SB
IQ8P-3P-72-E-US +2 SKU	475 W	208 V	475 W	475 W	97.5%	36–53 V	Nov 21, 2023	SB

DC input (PV side)

Enphase Energy datasheet · CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

Max DC input voltage63 V
MPPT operating range36–53 V
CEC test DC voltages (min / nom / max)36 / 45 / 53 V
Start-up voltage21 V
DC operating range16–63 V
Max short-circuit current25 A
DC input at rated output (CEC test)489 W

AC output (grid side)

Enphase Energy datasheets · CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power475 W
Max apparent power480 VA
CEC-measured continuous output475 W
Grid voltage208 V
Phase208 V (1-phase of 3-phase service)
Frequency60 Hz
Max continuous output current2.28 A

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026) · Enphase Energy datasheet · NLR SAM inverter library

CEC weighted efficiency97.5%
Peak efficiency97.8%
Night-time standby (tare)0.06 W
Power to start converting2.4 W

CEC weighted efficiency is measured by an accredited lab at six power levels and three DC voltages — the number to compare between inverters.

Grid & smart-inverter certification

CEC Grid Support Inverter List (Oct 7, 2026) · Enphase Energy datasheet

UL 1741 SB (3rd ed.)Yes — UL, certificate May 13, 2026
UL 1741 SA (SA8–SA13)Yes — UL
Firmware tested (SA)2.58.05, 8.14.02
Volt-VAr with reactive power priority (SA13)Yes
Freq-Watt / Volt-Watt (SA14–15)Yes
Disable permit service / limit active power (SA17–18)Yes
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)Yes (attested Oct 1, 2024)
Anti-islanding method groupsGroups 1 (manufacturer-reported)
Power control system (PCS)Stated in CEC listing (power control system)
CEC listedNov 21, 2023
Last CEC updateJul 1, 2026
Standards listed on the datasheetUL 1741 SB, UL 1741, IEEE 1547, UL 62109, FCC Part 15, CA Rule 21, NEC 690.12 (rapid shutdown), UL 1741 SA

UL 1741 SB is required for new interconnections in California (Rule 21) since 2026.

Safety & protection

Enphase Energy datasheet

Rapid shutdown (NEC 690.12)Yes (NEC 690.12, datasheet)

Monitoring & communication

Enphase Energy datasheet

InterfacesPLC, CAN

Size, weight & environment

Enphase Energy datasheet

Dimensions (W × H × D)7.9 × 10.4 × 1.4 in
Weight3.5 lb (1.6 kg)
Enclosure ratingClass II double-insulated
CoolingNatural convection (no fans)
Operating temperature−40 to +65 °C
Made inmade in the United States of America

Warranty

Enphase Energy datasheet

Standard warranty25 years

Panel compatibility & string sizing

Enphase Energy datasheet · NLR PVWatts v8 · CEC PV Module List · Cali-Graf calculation

CityColdest air, °CHottest cell, °C

IQ8P-3P-72-E-US: max DC 63 V · MPPT 36–53 V (datasheet)

Most-permitted panels in Southern California

Panel	Power	Voc cold / Vmp hot	Check	DC/AC	Installed together
Qcells Q.PEAK DUO BLK ML-G10.C+ 410	410 W	48.1 / 30.6 V	⚠ Below MPPT at peak heat	0.86	—
Qcells Q.PEAK DUO BLK ML-G10+ 410	410 W	48.1 / 30.6 V	⚠ Below MPPT at peak heat	0.86	—
LONGi LR5-54HABB-400M	400 W	39.3 / 25.3 V	⚠ Below MPPT at peak heat	0.84	—
JA Solar JAM54S31-405/MR	405 W	39.4 / 25.5 V	⚠ Below MPPT at peak heat	0.85	—
Hyundai Solutions HiN-T440NF(BK)	440 W	40.9 / 27 V	⚠ Below MPPT at peak heat	0.93	—
Silfab Solar SIL-440QD	440 W	41.1 / 28 V	⚠ Below MPPT at peak heat	0.93	—
Qcells Q.TRON BLK M-G2+ 430	430 W	41.3 / 28 V	⚠ Below MPPT at peak heat	0.91	—
Qcells Q.TRON BLK M-G2.H+ 430	430 W	41.3 / 28 V	⚠ Below MPPT at peak heat	0.91	—
REC Group REC460AA Pure-RX	460 W	68.8 / 47.1 V	✗ Cold Voc above max input	0.97	—
Elin (Sirius PV) ELNSM54M-HC-410	410 W	39.3 / 25.3 V	⚠ Below MPPT at peak heat	0.86	—
Qcells Q.TRON BLK M-G2.C+ 430	430 W	41.3 / 28 V	⚠ Below MPPT at peak heat	0.91	—
Tesla TSP-420	420 W	43.4 / 27.7 V	⚠ Below MPPT at peak heat	0.88	—

Voltage check only, from CEC panel data and NLR weather for the city. Final design must follow the inverter manual and NEC 690.7.

Installed in Southern California

building permits

Permits name it

Aug 2024

Jurisdictions so far

LA County (unincorp.) (1)

116

Units listed

median 116 per permit

Model named in permit

IQ8P-3P-72-E-US

Only installer and ZIP level is shown — no homeowner names, street addresses or permit numbers. Permits from LA County (unincorp.) come without a contractor license, so they count toward totals but not toward installers. Counts grow as more permit portals are loaded.

Compare with similar 475 W inverters

CEC Grid Support Inverter List (Oct 7, 2026) · building permits

Inverter	Power	CEC weighted eff.	DC test window	UL 1741 SB	Latest CEC	SoCal permits
Enphase Energy IQ8-3P Series	380 W–475 W	97.5%	36–53 V	Yes	2023	1
Enphase Energy IQ8 Series	240 W–633 W	97.5%	25–95 V	44 of 45	2025	1,104
Enphase Energy IQ7 Series	190 W–384 W	97.5%	22–64 V	114 of 119	2022	471
Hoymiles HM-xxxNT	295 W–1.44 kW	96.5%	29–48 V	11 of 12	2023	3
Enphase Energy IQ9 Series	405 W–440 W	97.5%	28–45 V	Yes	2026	—

Same type and grid voltage, power range covering this model; same fields from the same sources.

About Enphase Energy

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerEnphase Energy
Listed in CEC asEnphase Energy, Inc.
Websiteenphase.com
Models on CEC lists223

Other series

IQ8 Series · 1104 permitsIQ7 Series · 471 permitsIQ9 SeriesIQ9-3P Series

Documents

manufacturer documents

PDF
IQ8P-3P Commercial Microinverter data sheet
Datasheet · Enphase
PDF
IQ8 Commercial Microinverters data sheet
Datasheet · Enphase

Questions & answers

How efficient is the Enphase Energy IQ8-3P Series?

The California Energy Commission lists a weighted efficiency of 97.0–97.5% for Enphase Energy IQ8-3P Series models, measured at six power levels and three DC voltages. The datasheet states a peak efficiency of 97.8%.

What sizes does the Enphase Energy IQ8-3P Series come in?

The CEC list includes 2 models from 380 W to 475 W AC: IQ8H-3P-72-E-US, IQ8P-3P-72-E-US.

Is the Enphase Energy IQ8-3P Series certified to UL 1741 SB?

Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.

What is the IQ8P-3P-72-E-US’s DC input voltage range?

Max DC input voltage is 63 V per the datasheet. MPPT operating range 36–53 V. CEC tested it at 36–53 V DC.

What warranty does it have?

25 years standard (manufacturer datasheet).

Sources

California Energy Commission — Grid Support Inverter List (solar and battery inverters), data as of Oct 7, 2026. Manufacturer-reported, confirmed by CEC against certificates and test reports.
Enphase Energy — datasheet IQ8 Commercial Microinverters data sheet.
Enphase Energy — datasheet IQ8P-3P Commercial Microinverter data sheet.
Enphase Energy — document library on the manufacturer’s website (links above).
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
California Energy Commission — PV Module List (module electrical data for the compatibility check).
Building permits — Los Angeles County Public Works (EPIC-LA, unincorporated areas) (Aug 2024). Equipment matched from permit descriptions by model number.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).