{"id":104,"date":"2021-03-23T19:35:58","date_gmt":"2021-03-23T23:35:58","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/chapter\/triple-pole-single-throw-3pst\/"},"modified":"2021-04-13T17:16:59","modified_gmt":"2021-04-13T21:16:59","slug":"triple-pole-single-throw-3pst","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/chapter\/triple-pole-single-throw-3pst\/","title":{"raw":"Triple-pole, single-throw (3PST)","rendered":"Triple-pole, single-throw (3PST)"},"content":{"raw":"&nbsp;\r\n\r\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.\r\n\r\n<img class=\"size-full wp-image-103 aligncenter\" src=\"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-content\/uploads\/sites\/1349\/2021\/03\/3PST-1.png\" alt=\"\" width=\"205\" height=\"245\" \/>\r\n\r\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.","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\/lightingforelectricians\/wp-content\/uploads\/sites\/1349\/2021\/03\/3PST-1.png\" alt=\"\" width=\"205\" height=\"245\" srcset=\"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-content\/uploads\/sites\/1349\/2021\/03\/3PST-1.png 205w, https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-content\/uploads\/sites\/1349\/2021\/03\/3PST-1-65x78.png 65w\" sizes=\"auto, (max-width: 205px) 100vw, 205px\" \/><\/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":103,"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":[58],"class_list":["post-104","chapter","type-chapter","status-publish","hentry","contributor-alee59","license-all-rights-reserved"],"part":85,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/chapters\/104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/wp\/v2\/users\/103"}],"version-history":[{"count":2,"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/chapters\/104\/revisions"}],"predecessor-version":[{"id":414,"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/chapters\/104\/revisions\/414"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/parts\/85"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/chapters\/104\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/wp\/v2\/media?parent=104"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/pressbooks\/v2\/chapter-type?post=104"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/wp\/v2\/contributor?post=104"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/lightingforelectricians\/wp-json\/wp\/v2\/license?post=104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}