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Arc Fault GFCI confusion



Here is the quickie on arc fault and gfci issues regarding Fire/burg systems
etc. per new NEC 70  which seems to be causing confusion

Arc fault protection is required if smoke alarms being installed in a
bedroom are the 120vac type  if the smoke detectors are low voltage and
attached to a fire/burg panel they do not need arc fault protection.

If the outlet you are plugging the power supply for the fire/burg panel is
in a bedroom area that outlet would need arc fault protection if it is new
construction or newly installed.

Regarding gfci protection if the fire/burg panel  power supply transformer
is plugged in to an area such as unfinished basement ,garage etc which
requires gfci protection.  A single purpose dedicated outlet just for the
fire/burg system can be installed and does not need gfci protection so a
gfci nuisance trip will not interfere with system operation.




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