There is no requirement for smoke detectors to be on a GFCI protected
circuit. If the detector is in a bedroom, new installations would require
an AFCI circuit breaker. Since 2002, most jurisdictions have enforced the
electric code requirement for all new 'stuff' (branch circuits) in bedrooms
must be protected by AFCI's.

"Robert11" wrote in message
...
WHY ?

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"Tisk, Tisk, you know wired smoke alarms aren't to be on gfci circuits.

:-P"