Tigo Energy Meter installation is covered in the Tigo Academy EI Residential Solution Certification Course.
The EI Energy Meter is essential to Tigo's EI Residential solution. It measures current flow in and out of the home for important battery charging calculations and is also used for zero export applications. It has two prewired split-core current transducers (80 inches in length) placed on the site's main service entrance.
If the service entrance (or box) is full of connections, has internal obstacles, or is too small for the Energy Meter's CTs to fit inside, the installer will need to seek out an alternative connection point.
Examples
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This meter box is too small for the CTs to attach and still be able to shut the door.
- This is a bottom-fed AC panel with square bus bars, that the EI Meter CTs will not fit around
Workarounds
Option 1: Bundle circuit breaker conductors
Bundle all the L1 and L2 circuit breaker conductors in their respective CT. The CT outputs are connected to the Tigo Energy Meter, which is connected to either the Cloud Connect Advanced (CCA) or the Tigo EI Inverter.
(Not a Tigo Energy Installation)
Option 2: Access to service entrance conductors
Request upstream access to the utility’s service conductors (usually located in a separate enclosure). Once those conductors are exposed, the CTs can be connected to the utility side of the service panel.
Option #3: Service meter shift. This option requires utility approval, and the Local Utility agent must perform the shift. They will install a separate enclosure next to the main service panel. The existing conductors will be exposed for the CTs to clamp around.
This arrangement would look something like this:
Option 4: Service Meter Adaptor
This requires additional hardware but provides enough space for the clamp CTs. The ConnectDER Solar Meter Socket Adaptor provides this solution, however Tigo does not endorse a particular product.
If you have additional questions about the options (above) or have general design inquiries, please contact the Tigo Sales Engineering team or email them directly at se@tigoenergy.com
You can also share your experience at the Tigo Community!