Ideal SureTest 61-164 Manual De Instrucciones página 10

Note: The AFCI circuitry is protected by a thermal sensor to assure long life. If a
thermometer icon appears in the display during repeated AFCI testing, the sensor delays fur-
ther testing until the circuitry cools. At that point, the testing will automatically
continue.
Shared Neutral Test (#61-165 only)
AFCI breakers are prone to nuisance tripping when wired with a shared neutral or when the neutral
conductor is accidentally grounded before the panel. The AFCI tripping occurs because it senses
an imbalance between the current going out on the hot and the current returning on the neutral.
A shared neutral between two hot conductors creates this imbalance. See the illustration below to
see how this imbalance can occur.
The SureTest can test for these conditions by applying a small load of 300mA between hot and
neutral to simulate a normal load and ensure that the AFCI breaker does not trip. To conduct a
shared neutral test, press the AFCI button to enter the AFCI main menu. Press the side arrow ( )
to highlight the NEUT symbol. Then, press the AFCI button to activate the test. The TEST icon will
light brightly while the test is being conducted. The AFCI breaker should not trip. If the breaker
does trip, a shared neutral is the probable cause.
Illustration:
SureTest Shared Neutral Test w/300mA load
Circuit #1: Breaker
Circuit #2: Breaker
3A
3.3A
300mA
10
H1
)
Lights
N
)
Outlet
H2