WEM3050T: Affordable Wi-Fi Energy Meter for Split Phase Monitoring in North America
What Is a Split Phase (Single Phase 3-Wire) Power System?
Split phase, also known as single phase 3-wire, is a common residential power system in North America, especially in the U.S. and Canada. It uses a center-tapped transformer to provide two 120V lines and one 240V line, supporting both standard household appliances and high-power equipment like HVACs and EV chargers.
WEM3050T: Wi-Fi Energy Meter Designed for Split Phase Solar Monitoring
The IAMMETER WEM3050T is a versatile 3-phase Wi-Fi energy meter fully compatible with split phase (single phase 3-wire) systems. It enables accurate real-time monitoring of voltage, current, active power, reactive power, power factor, and energy (kWh)—ideal for both grid and solar system analysis.
Wiring Example: Split Phase Monitoring
- Grid Only: Use two inputs (Phase A and B) to monitor 120V x 2 lines of the grid.
- Grid + Inverter:
- Phase A and B monitor grid
- Phase C monitors one leg of the inverter output
- Set
CTCration = 2so the Phase C readings (current, power, energy) are doubled to represent total balanced inverter output
Learn more: Double phase C reading in split phase system
Key Features of the IAMMETER WEM3050T
- ✅ Compatible with single-phase, 3-phase, and split-phase (single phase 3-wire) systems
- ✅ Real-time monitoring: Voltage, current, power (W), energy (kWh), reactive power, and power factor
- ✅ Supports Modbus TCP / Modbus RTU for industrial integrations
- ✅ One device monitors both grid and solar in a split-phase setup—cost-effective and easy to install
IAMMETER-Cloud: Remote Energy Monitoring & Solar Management
IAMMETER-Cloud offers a clean and intuitive dashboard for viewing real-time and historical energy data via mobile app or web interface. Features include:
- Live data visualization and trends
- Power anomaly alerts and notifications
- Solar vs grid usage comparison
- Multi-meter management and data export
Every WEM3050T includes a Basic IAMMETER-Cloud plan, perfect for residential solar users and DIY energy monitoring.
Free Local Hosting Options: IAMMETER-Docker & IAMMETER-Central
In addition to the cloud service, IAMMETER provides two free local deployment solutions:
- IAMMETER-Docker: for personal and offline usage
- IAMMETER-Central: for enterprise-level monitoring, with full API support for ERP or industrial integrations
Push Data to Your Own Server with Open Protocols
The WEM3050T supports sending JSON-format data directly to your own server using:
- MQTT
- HTTP/HTTPS
- TCP/TLS
You can bypass IAMMETER-Cloud completely. Learn how: Send data to your private server
Seamless Integration with Popular Smart Home Platforms
IAMMETER meters integrate smoothly with leading smart home and IoT platforms:
- Home Assistant
- Node-RED
- OpenHAB
- ioBroker
Integration guide: IAMMETER + Open-source platforms
Why Choose WEM3050T for Split Phase Power Monitoring?
The WEM3050T delivers an accurate, reliable, and affordable energy monitoring solution tailored for North American split-phase systems. Whether you're a solar homeowner, smart home enthusiast, or installer, this meter helps you optimize energy usage, lower bills, and unlock smart energy control.
