Sequenced separately-derived transfer switch capable of switching a load between a pair of power supplies without introducing open neutral switching transients

摘要

An interlock arrangement includes a pair of slidable lockouts operatively associated with utility and generator side switches of an electrical panel. Together with either an interlinked member or a rocker lockout, the interlock arrangement sequences manual switching of the utility and generator side switches according to a pre-defined switching sequence, such as a seven step sequence or a five step sequence.