Polarity Test

Purpose:
To determine that all electrical wiring connections have been properly made.

Equipment:
Polarity Checker 

Procedure:
Having completed all electrical connections and installed electrical devices, electric power is supplied to all circuits. Then the polarity checker should be plugged into each 120-volt receptacle outlet, including the outside and heat tape receptacles and observe the indicator lights for the correct polarity. In case a switched receptacle outlet is used, the switch should be in the “off” mode at the beginning of this test so that the function of the switch and receptacle combination can be verified. Turn the switch “on” after making sure the switched receptacle is not energized when the switch is “off”. The electrical connections that cannot be checked with a polarity checker shall be checked by visually inspecting the connections prior to covering.