A fixture mounting assembly and method according to which a coupling member is attached to the fixture, and a down-rod is pivotally mounted to the coupling member and is mounted to the ceiling. The step of processing comprises the steps of comparing each subconfiguration with reference configurations, selecting at least one subconfiguration candidate for each subconfiguration among the reference configurations based on said step of comparing, and determining at least one candidate pattern consisting of one selected subconfiguration candidate for each subconfiguration. The voltage-isolating passageway includes a passageway and at least two magnets.