SamC,
In Ontario, AFCI breakers will not be required retroactively, even if the service is upgraded. They would however be required for an addition containing a bedroom.
Arc Fault Circuit Interrupters will only be required for new construction, and additions or renovations when a new circuit is provided for a bedroom. AFCI's will not be required when existing receptacles are simply replaced.
Tony Moscioni
Electrical Inspector
© Electrical Safety Authority – 2002
