A ground fault circuit interrupter (GFCI) for opening a circuit when a ground fault has been detected in an attached circuit includes a current path structure containing no more than one splice and no more than one pair of contacts. A cantilevered movable contact arm and an activation device that moves...http://www.google.ca/patents/US6433555?utm_source=gb-gplus-sharePatent US6433555 - Electrical circuit interrupter
