If you're living in North America, chances are your home uses a split-phase 120/240V electrical system. This setup powers everything from your lights and outlets (120V) to high-draw appliances like dryers, HVAC systems, and water heaters (240V).
But here’s the problem: most homeowners have zero visibility into how much electricity each part of the home is actually consuming.
そこで、whole-home energy monitor like the WattPanel‑2X 120/240V Energy Monitor comes in — giving you real-time insight into your energy usage, directly from your breaker panel.
Why Traditional Energy Monitoring Falls Short
Your utility bill tells you how much electricity you used… after the fact. But it doesn’t show:
- Which appliances are using the most power
- When usage spikes (e.g. overnight, during AC cycles)
- Where you’re wasting electricity due to phantom loads or inefficiencies
- How much solar production offsets your consumption (if applicable)
If you're serious about lowering your bills or troubleshooting high usage, you need circuit-level, real-time monitoring — starting at the panel.
What Is a Split-Phase Energy Monitor?
A split-phase energy monitor is designed specifically for North American residential systems (typically 120V/240V). Devices like the 120/240V Energy Monitor WattPanel‑2X connect directly to your main or subpanel, and track:
- Total power usage across both legs of the system
- Voltage, current, and real-time power draw (W, A, V)
- Trends and historical data
- Optional multi-circuit monitoring with CT clamps
- Data access via Wi-Fi or LAN (no hub required)
🏡 It's ideal for tracking HVAC, water heaters, EV chargers, and overall home usage — even across two service legs.
How to Set It Up in Your Home
Here’s a quick overview of installing the WattPanel‑2X in a typical residential setup:
1. Choose Your Kit
Grus offers several CT combinations, such as:
- 2×200A or 2×300A for whole-home monitoring
- Add-ons like 50A CTs for individual circuits (AC, stove, EV charger, etc.)
🔗 Choose Your WattPanel-2X Kit →
2. Install in Main or Subpanel
⚠️ Hire a licensed electrician if you’re unfamiliar with electrical work.
- Mount the monitor inside your panel
- Clamp CT sensors onto the two main lines (L1 and L2)
- Optional: Add more CTs to monitor specific branch circuits
- Connect the unit to your Wi-Fi or LAN
No rewiring needed — clamp-style CTs make it safe and easy.
3. Connect and Monitor via App
Once installed, use the Grus app or dashboard to:
- View real-time power draw per leg or circuit
- Spot inefficiencies or overuse
- Track solar net metering (if applicable)
- Get daily/weekly/monthly trends
- Export usage data for utility rebate programs
Who Is It For?
The WattPanel‑2X is perfect for:
- Homeowners wanting control over energy costs
- DIY solar installers verifying panel-level generation and use
- Electric vehicle owners tracking charging loads
- Anyone with high energy bills who wants answers
Why Choose Grus WattPanel‑2X?
✅ Supports 120/240V split-phase homes
✅ Up to 300A per leg
✅ Optional multi-circuit expansion
✅ Wi-Fi + LAN connection
✅ No subscription fees
✅ Built for long-term insights and reliability
Final Thoughts
A smart 120/240V Energy Monitor isn't just about numbers — it's about making better energy decisions. Whether you're trying to lower your bill, understand your EV's impact, or prep for solar, the WattPanel‑2X gives you the clarity you need.
🔗 Start Monitoring Your Home Today →
Related Reads
- What Is a Multi-Circuit Energy Meter and Why It Matters for Commercial Power Monitoring →
- How to Reduce Your Electricity Bill with Smart Energy Monitors? →
- What Phase is Normal American Home Power? Understanding Single-Phase, Split-Phase, and Three-Phase Power →
Got questions? Our team is happy to help you choose the right WattPanel setup for your home.
