{"id":73,"date":"2022-01-18T16:34:18","date_gmt":"2022-01-18T21:34:18","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/chapter\/triple-pole-single-throw-3pst\/"},"modified":"2022-09-14T15:57:17","modified_gmt":"2022-09-14T19:57:17","slug":"triple-pole-single-throw-3pst","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/chapter\/triple-pole-single-throw-3pst\/","title":{"raw":"Triple-pole, single-throw (3PST)","rendered":"Triple-pole, single-throw (3PST)"},"content":{"raw":"\n&nbsp;\n\nThese are used to control three-phase loads such as motors. With a single external handle, three current-carrying conductors can be opened or closed at once. The switches often come with housing for the mounting of fuses to provide <strong>overcurrent<\/strong> protection. The switch must have an equivalent horsepower rating to any motor it is controlling the current to.\n\n<img class=\"size-full wp-image-103 aligncenter\" src=\"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-content\/uploads\/sites\/1597\/2022\/01\/3PST-1.png\" alt=\"\" width=\"205\" height=\"245\">\n\nThe three ungrounded conductors are called Line 1, Line 2 and Line 3, while the load side terminals are referred to as Terminal 1, Terminal 2 and Terminal 3.\n","rendered":"<p>&nbsp;<\/p>\n<p>These are used to control three-phase loads such as motors. With a single external handle, three current-carrying conductors can be opened or closed at once. The switches often come with housing for the mounting of fuses to provide <strong>overcurrent<\/strong> protection. The switch must have an equivalent horsepower rating to any motor it is controlling the current to.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-103 aligncenter\" src=\"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-content\/uploads\/sites\/1597\/2022\/01\/3PST-1.png\" alt=\"\" width=\"205\" height=\"245\" \/><\/p>\n<p>The three ungrounded conductors are called Line 1, Line 2 and Line 3, while the load side terminals are referred to as Terminal 1, Terminal 2 and Terminal 3.<\/p>\n","protected":false},"author":848,"menu_order":5,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":["alee59"],"pb_section_license":"all-rights-reserved"},"chapter-type":[],"contributor":[61],"license":[59],"class_list":["post-73","chapter","type-chapter","status-publish","hentry","contributor-alee59","license-all-rights-reserved"],"part":59,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/chapters\/73","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/wp\/v2\/users\/848"}],"version-history":[{"count":1,"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/chapters\/73\/revisions"}],"predecessor-version":[{"id":401,"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/chapters\/73\/revisions\/401"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/parts\/59"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/chapters\/73\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/wp\/v2\/media?parent=73"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/pressbooks\/v2\/chapter-type?post=73"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/wp\/v2\/contributor?post=73"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/basiclightingforelectricianslevel2\/wp-json\/wp\/v2\/license?post=73"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}