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Single Phase Inverters

In stock

Aptos Solar MAC-400 Microinverter

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings320–540 W

Delivery on Nov 26 – Dec 03

In stock

APsystems DS3-L Microinverter

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings265–570 W

Pickup on Fri, Nov 21 from Orlando, FL

Delivery on Nov 26 – Dec 03

In stock
Customer Choice

Enphase IQ8PLUS Microinverter IQ8PLUS-72-M-US

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings235–440 W

Pickup on Fri, Nov 21 from Orlando, FL

Delivery on Nov 26 – Dec 03

In stock

Aptos Solar MAC-800 Microinverter

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings320–540 W

Delivery on Nov 26 – Dec 03

In stock

Enphase IQ8AC Microinverter IQ8AC-72-M-US

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings295–500 W

Pickup on Fri, Nov 21 from Pompano Beach, FL

Delivery on Nov 26 – Dec 03

Limited stock

APsystems DS3 Microinverter

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings300–660 W

Pickup on Fri, Nov 21 from Orlando, FL

Delivery on Nov 26 – Dec 03

Limited stock

Enphase IQ8X Microinverter IQ8X-80-M-US

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input79.5 VDC
  • Module Pairings320–540 W

Delivery on Nov 26 – Dec 03

In stock

Enphase IQ8HC Microinverter IQ8HC-72-M-US

  • TypeMicro Inverters
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Nominal DC Input60 VDC
  • Module Pairings320–540 W

Pickup on Fri, Nov 21 from Pompano Beach, FL

Delivery on Nov 26 – Dec 03

Limited stock

Tigo Energy 3.8 kW 50A ATS-Compatible Hybrid Inverter TSI-3.8K-US

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage240 VAC
  • Max DC Voltage (Voc)600 VDC

Delivery on Nov 26 – Dec 03

Limited stock

SMA Sunny Boy Smart Energy 3.8 kW Hybrid Inverter SMA-SBSE3.8-US-50

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Max DC Voltage (Voc)600 VDC

Pickup on Fri, Nov 21 from Pompano Beach, FL

Delivery on Nov 26 – Dec 03

Limited stock

OutBack Power SkyBox 5 kW Hybrid Inverter SBX5048-120/240 Open Box

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage120/240 VAC
  • Nominal DC Input48 VDC
  • Max DC Voltage (Voc)600 VDC

Pickup on Fri, Nov 21 from Coral Springs, FL

Delivery on Nov 26 – Dec 03

Limited stock

SMA Sunny Boy Smart Energy 4.8 kW Hybrid Inverter SMA-SBSE4.8-US-50

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Max DC Voltage (Voc)600 VDC

Pickup on Fri, Nov 21 from Pompano Beach, FL

Delivery on Nov 26 – Dec 03

Limited stock

Tigo Energy 7.6 kW 50A ATS-Compatible Hybrid Inverter TSI-7.6K-US

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage240 VAC
  • Max DC Voltage (Voc)600 VDC

Delivery on Nov 26 – Dec 03

Limited stock

SMA Sunny Boy Smart Energy 5.8 kW Hybrid Inverter SMA-SBSE5.8-US-50

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Max DC Voltage (Voc)600 VDC

Pickup on Fri, Nov 21 from Pompano Beach, FL

Delivery on Nov 26 – Dec 03

Limited stock

OutBack Power SkyBox 5 kW Hybrid Inverter SBX5048-120/240 Clearance

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage120/240 VAC
  • Nominal DC Input48 VDC
  • Max DC Voltage (Voc)600 VDC

Pickup on Fri, Nov 21 from Coral Springs, FL

Delivery on Nov 26 – Dec 03

Limited stock

SMA Sunny Boy Smart Energy 7.7 kW Hybrid Inverter SBSE7.7-US-50

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Max DC Voltage (Voc)600 VDC

Pickup on Fri, Nov 21 from Pompano Beach, FL

Delivery on Nov 26 – Dec 03

Limited stock
Customer Choice

SolarEdge 10 kW Grid-tie Inverter SE10000H-US

  • TypeGrid-tie
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Max DC Voltage (Voc)480 VDC

Pickup on Fri, Nov 21 from Orlando, FL

Delivery on Nov 26 – Dec 03

Limited stock

SMA Sunny Boy Smart Energy 9.6 kW Hybrid Inverter SMA-SBSE9.6-US-50

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage208/240 VAC
  • Max DC Voltage (Voc)600 VDC

Delivery on Nov 26 – Dec 03

Limited stock

Generac PWRcell 7.6 kW Hybrid Inverter XVT076A03

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage120/240 VAC
  • Max DC Voltage (Voc)380 VDC

Pickup on Fri, Nov 21 from Orlando, FL

Delivery on Nov 26 – Dec 03

Limited stock

Sol-Ark 8K-48-ST Hybrid Inverter

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage120/240 VAC
  • Nominal DC Input48 VDC
  • Max DC Voltage (Voc)500 VDC

Pickup on Fri, Nov 21 from Orlando, FL

Delivery on Nov 26 – Dec 03

Limited stock

OutBack Power Radian 8 kW Pure Sine Inverter GS8048A

  • TypePure Sine Inverters
  • PhasesSingle-phase
  • AC Output Voltage120/240 VAC
  • Nominal DC Input48 VDC

Delivery on Nov 26 – Dec 03

Limited stock

Sol-Ark 12K-2P Hybrid Inverter

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage120/240, 120/208, 220 VAC
  • Nominal DC Input48 VDC
  • Max DC Voltage (Voc)500 VDC

Delivery on Nov 26 – Dec 03

Limited stock

Sol-Ark Limitless 15K-LV Hybrid Inverter 15K-2P-N

  • TypeHybrid
  • PhasesSingle-phase
  • AC Output Voltage120/240, 120/208, 220 VAC
  • Nominal DC Input48 VDC
  • Max DC Voltage (Voc)500 VDC

Delivery on Nov 26 – Dec 03

  • Overview
  • Articles

Single Phase Inverter For Sale

Single-phase inverters convert DC power from solar panels into AC electricity compatible with standard residential electrical services, representing the backbone of nearly all U.S. home solar installations. For installers working with 120/240V split-phase systems, understanding specific characteristics and selection criteria separates successful projects from costly callbacks.

Why Single-Phase Inverters Dominate Residential Solar

Single-phase inverters dominate residential PV installations because they directly match the electrical service configuration found in virtually all U.S. homes. North American residential electrical services deliver power through a single-phase transformer with a center-tapped secondary winding, creating the 120/240V split-phase configuration with two 120V legs (L1 and L2) and neutral at center tap.

Modern residential inverters employ two approaches for split-phase integration. Transformer-based designs use an internal transformer with center-tapped secondary that directly creates 120/240V split-phase output. Transformerless inverters require dual H-bridge circuits with coordinated PWM control to synthesize required voltage relationships.

Inverter Type Integration Method Phase Balance Typical Efficiency
Transformer-based Center-tapped secondary Automatic 95–96% CEC weighted
Transformerless (dual output) Dual H-bridge circuits Automatic 96.5–97.5% CEC weighted
Transformerless (L1-L2) Single H-bridge 240V Manual load distribution 96.5–97.5% CEC weighted
Transformerless (L1-N or L2-N) Single H-bridge 120V Requires balancing strategy 96–97% CEC weighted

Grid-Tied vs. Hybrid: Choose Your Configuration

Feature Grid-Tied Inverter Hybrid Inverter
Backup power capability None (except EPS models) Full critical load backup
Battery integration Not supported Native DC or AC coupling
Typical installed cost (8 kW) $5,000–$8,000 $8,000–$12,000 (inverter only)
System efficiency 96–97.5% CEC weighted 94–96% (includes battery losses)
Grid outage operation Shuts down immediately Forms standalone microgrid
Best for Net metering, lowest cost/watt Backup needs, TOU optimization

Grid-tied inverters operate in lockstep with utility supply, exporting excess solar production when generation exceeds consumption. These systems offer simplest configuration and lowest cost per watt. Hybrid inverters incorporate battery interfaces enabling energy storage for backup power and consumption optimization. During grid outages, hybrid inverters automatically transition to backup mode with transition times below 20 milliseconds.

Sizing Your Single-Phase Inverter: Critical Parameters

Essential Specifications for Split-Phase Systems

Parameter Specification Range Sizing Guideline
DC-to-AC ratio 1.10:1 to 1.25:1 Oversize array 110–125% of inverter AC capacity
Maximum DC input voltage 480V to 1000V Must exceed array VOC at coldest temp 20% margin
MPPT voltage range 200–800V typical String voltage must stay within range across full temp excursion
Maximum input current per MPPT 12–15A residential Limits parallel strings per input channel
Maximum AC output current 30–50A typical Must stay below breaker rating per NEC 690
CEC weighted efficiency 96.5% recommended More relevant than peak efficiency alone
Night-time standby consumption <5W preferred Minimizes parasitic losses during non-production hours
Temperature derating threshold 40°C (104°F) typical Consider actual installation environment temperature
Expert Tip

Always verify inverter specifications against specific installation environment rather than relying solely on nameplate ratings. An inverter rated for full power at 40°C ambient mounted in direct sun may derate to 80% capacity during peak summer production.

5-Step Selection Process

⚡ Quick Sizing Checklist: Calculate array DC capacity and multiply by 1.15–1.25 for target inverter AC rating. Verify string VOC at minimum temperature stays below maximum DC input with 20% margin. Confirm string voltage at MPP under high temperature exceeds minimum MPPT voltage. Check input current per MPPT channel accommodates planned string configuration. Verify AC output current fits within NEC 690 limits for service panel (typically 120% of bus rating).

Single-Phase vs. Three-Phase: When to Choose What

System Size Service Type Recommended Configuration Cost Impact
4–10 kW Split-phase residential Single-phase string inverter or microinverters Baseline
10–15 kW Split-phase residential Single 10–15 kW single-phase inverter 30% vs. smaller units
15–25 kW Split-phase residential Dual single-phase inverters 40% vs. single large unit
10–25 kW Three-phase commercial Three-phase inverter or phase-balanced single-phase -20% at scale

The practical tipping point occurs around 25–30 kW system size. Below this threshold, single-phase string inverters dominate through superior economics, simpler installation, and broader product availability. Three-phase inverters cost 30–50% more for equivalent capacity in residential scale applications.

Common Integration Challenges & Solutions

Balancing L1 & L2 Phases

Inverter Connection Type L1-L2 Balance Impact Solution Required
L1-L2 (240V) Balanced automatically None—inherently balanced
Center-tapped transformer output Balanced automatically None—neutral tap provides balance
L1-N only Imbalanced—all current on L1 Strategic load distribution or dual inverters
L2-N only Imbalanced—all current on L2 Strategic load distribution or dual inverters
Dual output (L1-N L2-N) Balanced automatically None—designed for split-phase

Single-phase inverters injecting power into split-phase panels create asymmetric loading unless properly configured. Excessive imbalance beyond 20% can trip main breakers or cause voltage rise. Transformer-based inverters with center-tapped outputs naturally balance L1 and L2 current injection.

NEC & UL Compliance Essentials

Requirement NEC/UL Reference Common Issues
Rapid shutdown NEC 690.12 Improper labeling, non-compliant components
Ground fault detection UL 1741 Multiple ground points, inadequate conductor sizing
Arc fault detection NEC 690.11 False trips from RF interference
Anti-islanding IEEE 1547 Must disconnect within 2 seconds of grid loss
Interconnection sizing NEC 690.12 Solar breaker >120% of bus rating
Expert Tip

Document the solar inverter's output configuration and phase connection explicitly in electrical one-line diagram submitted for permit review. Clear documentation showing whether inverter connects L1-L2, L1-N, L2-N, or uses balanced dual outputs prevents inspection delays.

Future-Proof Technology Trends

Technology Trend Current Status Impact Timeline
Silicon carbide (SiC) semiconductors Premium products 2–3 years to mainstream
IEEE 1547-2018 grid support Required in California (Rule 21) Expanding nationally 2025–2026
Vehicle-to-home (V2H) integration Limited availability 3–5 years to common adoption
Modular/upgradeable architecture Emerging in hybrid inverters Currently niche, growing adoption

Wide-bandgap semiconductor adoption represents the most significant technology shift. Silicon carbide MOSFETs enable CEC weighted efficiencies exceeding 97.5% while operating at higher temperatures without derating. Grid support functionality transforms inverters from passive grid clients to active support devices providing voltage regulation and frequency support.

🔮 Looking Ahead: Vehicle-to-home integration emerges as hybrid inverters add bidirectional charging capability for electric vehicles. This functionality enables EVs to serve as mobile battery backup, significantly expanding available energy storage without dedicated stationary batteries.

Selecting single-phase inverter technology for residential solar installations requires balancing technical specifications against real-world electrical infrastructure and economic constraints. The overwhelming majority of U.S. homes operate on 120/240V split-phase services that naturally align with single-phase inverter technology, making proper sizing and split-phase balance considerations more impactful than topology alternatives.

Need Expert Guidance on Single-Phase Inverter Selection?

Our team of solar energy specialists can help you choose the optimal inverter configuration for your residential or small commercial project. Get professional recommendations tailored to your specific split-phase service requirements.

Shop Single-Phase Inverter

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