For 400A and Generator integration, you should utilize the Flex add-on sensors available from https://sense.com/buy or Collections – Sense. These are functionally and physically identical to the solar sensors, but come with different packaging and literature to point you to the correct installation guides for these new setups.
Please note that Flex sensors cannot be used in place of the main sensors that come with Sense, which are calibrated specifically for your monitor. They might look the same, but there are differences.