Applications
There are two applications for the Tigo Energy Meter:
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Application 1 Installation with the EI Inverter but without a Tigo EI ATS |
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Application 2 Installation with the EI Inverter with the Tigo EI 50A ATS |
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Note: The Tigo EI 200A ATS has a built-in Energy Meter. Although there is no direct connection between this meter and the EI Inverter, the 200A ATS does require a communication cable for data transfer. Refer to the EI 200A ATS for wiring instructions. Downloads |
Use Cases
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Use case 1 - EI Battery is installed If the Tigo EI Battery is installed, you must also install the Tigo Energy Meter. The Energy Meter measures consumption coming into the home and allows the EI system to discharge the battery to offset grid usage. |
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Use case 2 - Consumption data There is no EI Battery is on site, but the homeowner wants home consumption data on the Tigo EI Portal. There must be an EI Inverter onsite. |
Installation
CAUTION!
Do not cut the CT wires. They are calibrated for a specific length, and any modifications will tamper with the meter's accuracy and void the warranty.
The Tigo Energy Meter has two sets of terminals: the communication terminals are on top, and the power terminals are on the bottom.
The Energy Meter ships with an accessories bag of green Phoenix connectors (installed for reference in this image.) The CT wires are factory-connected to a male connector for easy installation.
The inverter communication wire and the power wires must be connected on site.
Use this diagram to match conductors to the appropriate terminals on the Energy Meter.
Note: The Energy Meter inverter communication terminal sequence from left to right (G B A) differs from the terminals inside the EI Inverter (A G B). Pay close attention to the wiring scheme in the image since miswiring is a common service call.
CT Placement
| The CTs have an arrow indicating the direction of current flow. The arrow should face away from the grid to symbolize the current flowing into the home. (white fill added for easier identification) |
The CTs should be placed around the appropriate main service entrance conductors, as shown in this image.
Combination panels may prove challenging since the meter is typically connected to the main breaker lugs using bus bars instead of conductors. The Energy Meter CTs will not clamp around the bus bars. There are several workarounds for this type of panel.
Please take a look at this Help Center article that talks about CT placement workarounds.
What can I do if the EI Energy Meter CTs do not fit in the main service entrance?
Adding the Energy Meter to the EI App
Once the CTs are clamped around the appropriate conductors, it is time to use the EI App to recognize this device in the system. The EI App is found in your device’s app store.
Navigate to the Inverter setup page:
Open the EI App > tap the gear icon in lower right corner > tap Select Equipment > tap Inverter
| Step 1. Tap Add on the lower right corner | |
| Step 2. Tap Meters and Sensors in the lower popup | |
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Step 3. Add the Meter
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Installation Complete!
Home consumption data should now appear in the AI App and the EI portal (ei.tigoenergy.com)
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To learn more about the Tigo Residential Solution, please check out the NABCEP registered courses in the Tigo Academy |