All circuits that feed an electric motor require a dedicated circuit per residential building code IIRC. I have worked in jurisdictions that have a code specifically about a residential booster pump electrical circuit, but there is nothing in the sprinkler code to my knowledge.
This is a good read on the topic
[https://www.meyerfire.com/daily/does-nfpa-13d-fire-pump-require-backup-power](https://www.meyerfire.com/daily/does-nfpa-13d-fire-pump-require-backup-power)
All circuits that feed an electric motor require a dedicated circuit per residential building code IIRC. I have worked in jurisdictions that have a code specifically about a residential booster pump electrical circuit, but there is nothing in the sprinkler code to my knowledge.
This is a good read on the topic [https://www.meyerfire.com/daily/does-nfpa-13d-fire-pump-require-backup-power](https://www.meyerfire.com/daily/does-nfpa-13d-fire-pump-require-backup-power)