The CT's are designed to be fairly flexible related to their installation potential. Ideally they can be placed anywhere along the circuit line as needed, so they don't need to rest against the breaker/line terminals if the spacing is too tight nearby.
Does it matter which port the 200A CT's are attached to?
No - The Gen 2 is able to match each sensor to the appropriate phase and voltage without having to specify which port the sensor is attached to. So any of the A, B and/or C ports will work for your 200A CT's to be plugged into.
Does it matter which port(s) the 50A CT's are attached to?
No - feel free to plug in the sensors to any of the side ports as needed. To ensure you're plugging them into the appropriate port numbers, you can see the port numbers printed on the back of the device. This might be a bit backwards from what you'd expect, so always best to double check if unsure. Port #1 will start on the upper right corner (if looking at the front of the device) and will follow the right side down to port #8 on the bottom right hand side. Port #9 will then be located on the lower left hand side (when looking at the front of the device) and run up the side to port #16 on the upper right corner.
On the bottom of the sensors are a "K" and "L" label with an arrow pointing from "K" to "L". The "L" side should point towards appliance/consumption load and "K" represents power source. For standard installation scenarios - this means that the 200A CT's will have the "K" pointing towards the grid/meter and the "L" in towards the panel breakers. For the 50A CT's, the "K" would point towards the breakers and "L" out towards the appliance load. For situations with generated power (solar, generator, etc...) - then that 50A CT direction will be reversed since the source of power is also reversed and the "K" will point towards the solar inverter or generating power source.
Panel and breaker orientation may change depending on your situation, but same principle applies.
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.