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    Does the MICROLOGIC 6.0A / 6.0P / 6.0H trip unit have a ground fault test button and where is it?

    Issue:
    Does the MICROLOGIC 6.0A / 6.0P / 6.0H trip unit have a ground fault test button and where is it?

    Product Line:
    Circuit Breakers

    Environment:
    Applies to Powerpact P , R, and to Masterpact NT, NW, with Micrologic Trip Units type 6.0A, 6.0P and 6.0H
    These trip units have integral ground fault protection.

    Cause:
    How to test the ground fault trip to satisfy NEC230-95 (c).

    Resolution:
    The Micrologic 6.0A, 6.0P and 6.0H trip units have a ground fault test button on the front of the trip unit that can be used to satisfy NEC230-95(c). The button is white with a ``T`` in the center of it, and is located between the Ii Instantaneous adjustment dial, and the port for the secondary injection test kit cable. See the picture below showing the test button, and the instructions below for the testing procedure to meet NEC230-95 (c).

    Equipment Ground-Fault Trip Functions Testing
    Paragraph 230-95 (c) of the National Electrical Code requires that all equipment ground-fault protection systems be tested when first installed. With the circuit breaker closed, test the ground fault trip functions. For instructions on how to close circuit breaker, refer to the circuit breaker installation instructions shipped with the circuit breaker. As of the 2017 NEC230-95(c) the ground fault system needs to primary injection tested. The Test button as described below is no longer accepted for the initial acceptance testing. However, if subsequent testing is desired the Test button can be used.

    Testing ground fault trip with the T test button
    1. Make sure the trip unit is powered (it is powered when the trip unit screen shows a display). This can be done by either of the following methods:
    • Apply 24Vdc to terminals F2 and F1 in the green terminal strip on top of the trip unit (F2 positive). The trip unit will be powered all the time.
    • Connect the trip unit to the Full Funciton Test Kit or Hand Held Test Kit. When the test kit is turned on, the trip unit is powered. 
    2. Press the T ground-fault test button. Circuit breaker should trip.
    3. If circuit breaker does not trip, contact the local field office. 

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