The Gen 2 was built to be a very flexible energy monitor. It can work on single, single-split (two) and three phase systems. It also measures voltage directly, so it can understand if your system voltage is ~120V or ~240V and will work perfectly fine in both scenarios.
A fairly common question we get on the Customer Support team is whether or not the Gen 2 will work on a particular installation scenario or not. In general, the Gen 2 should work great for most residential situations and many light-commercial applications as well. Its primary limitations would be these:
System voltage (line-to-neutral voltage per phase) must be under ~264V.
Line amperage must be under 250A for the main lines (monitored with a "200A" CT) and 75A for the branch circuit current. Details on CT limitations and applications can be found here.
Line-to-neutral voltage is similar across all lines/phases - "high leg", or situations where one line-to-neutral voltage is higher than the other(s) will not work properly. An example might be two 120V line-to-neutral phases and one 240V line-to-neutral phase will not work with the Gen 2 as it uses averaged voltage for some on-device calculations.
other problematic issues can be found here.
Will it work outside of the US?
Yes - we have Gen 2's installed on 6 continents (not Antarctica that we're aware of) across dozens of countries. In most situations the Gen 2 is flexible enough to work on your system - regardless of 120V or 240V differences.
If unsure whether or not the Gen 2 would be an appropriate device for your monitoring situation, feel free to reach out to the Customer Support team with your questions. Helpful if you know the electrical details of the system (phase count as well as voltages) and pictures of the proposed electrical panel or consumer unit can also provide clarity for the team.
Feedback and Suggestions
This knowledge base is pretty new for the Emporia team. Our goal is to provide all of the information we can to help you manage your energy in better ways. If this article wasn't helpful, or we could be more clarifying on any points please reach out to the Customer Support team and we'll certainly work to improve these guides.