I.
Test the circuit breaker by pressing the TEST button. For an AFCI circuit breaker, the
TEST button generates a signal that simulates an arcing fault to the AFCI sensor. For a
GFCI circuit breaker, the TEST button creates a current imbalance between the phase and
neutral conductors. If the unit is operating properly, the circuit breaker will trip, and the
handle will move to the tripped, or center position.
J.
Restore power by switching the circuit breaker the fully OFF position, then switching the
circuit breaker to the fully ON position.
K.
If the circuit breaker does not trip when the TEST button is pushed, or if the circuit
breaker handle cannot be restored to the fully ON position, the circuit breaker is
malfunctioning. Remove the circuit breaker and replace it with a new unit.
L.
Energize all of the loads supplied by the circuit breaker. If the circuit breaker trips when
loads are energized, troubleshoot AFCIs, GFCIs, fixed wiring and appliances in
accordance with Annex A.
4.4
Installing Circuit Breaker-Type AFCIs and GFCIs in an Energized Panelboard
Follow the manufacturer’s recommendations when installing AFCI and GFCI circuit breakers.
These instructions provide general guidance for installing or replacing AFCIs and GFCIs in a
panelboard after power has been turned on to a panelboard:
A.
Identify the circuit breaker to be replaced, if any, and turn OFF all loads on the branch
circuit protected by that circuit breaker.
B.
De-energize the panelboard by turning OFF the panelboard main circuit breaker or other
main disconnecting device.
C.
Remove the panelboard cover and test to confirm that the panelboard is de-energized.
Keep in mind that the supply conductors connected to the source terminals of the main
disconnecting means in the panelboard remain energized. Guard energized components
in close proximity to the work.
D.
Remove the existing circuit breaker, if any, from the panelboard.
E.
Install the new circuit breaker, energize the panelboard, and test the circuit breaker in
accordance with Section 4.3.
4.5
Installing AFCI and GFCI Receptacles
AFCI receptacles are not permitted in new construction per the 2008 NEC. Follow the
manufacturer’s recommendations when installing new GFCIs, and when replacing existing AFCI
and GFCI receptacles with new ones. These instructions provide general guidance.
