Thanks for posting here in the community and for sharing with us your ideas with regards to the concern of the other user. Here's the link where you can check the required power for the Nest Doorbell wired 2nd gen.
Looking forward to your response.
Sounds great! As we got our resolution here, I'm going to mark this thread as complete. I'll be locking this thread if we won't hear back from you again in 24 hours. Should that happen, feel free to create a new one if you have more questions or have other concerns in the future.