Greetings,

Is there any rule which states not to run 120V wired smoke alarms from
a subpanel? I could see someone saying that the breaker to the
subpanel might flip leaving the smoke alarms with no AC power. Is this
a real concern addressed within the NEC or fire codes? Or can I just
run it off the subpanel and forget it because code doesn't address the
issue?

Thank you for your time and energy,
William