@trole Here are the answers.
- Yes
- The Rachio will power the transformer. You will need the Rachio Outdoor enclosure to install the Rachio if it is going where the Intermatic timer went.
- While there may not be video, there are plenty of threads with photographs where people have documented the steps they took.
The Rachio Outdoor enclosure can be wired to the outlet box where the existing Intermatic timer gets its power. Be sure to turn off the circuit breaker to that outlet when disconnecting the Intermatic timer and wiring in the Rachio outdoor enclosure. You’ll probably need to replace the old wire running from the plug to the Intermatic to have a long enough wire to connect the Rachio outdoor enclosure. Plus, be sure to put it in conduit - flexible or solid - to keep the weather and fingers out of the high voltage area.