{"id":48,"date":"2021-01-26T21:50:39","date_gmt":"2021-01-27T02:50:39","guid":{"rendered":"https:\/\/opentextbc.ca\/basichvac\/chapter\/electric-heat\/"},"modified":"2023-03-02T11:33:24","modified_gmt":"2023-03-02T16:33:24","slug":"electric-heat","status":"publish","type":"chapter","link":"https:\/\/opentextbc.ca\/basichvac\/chapter\/electric-heat\/","title":{"raw":"Electric Heat \u2013 General","rendered":"Electric Heat \u2013 General"},"content":{"raw":"Click play on the following audio player to listen along as you read this section.\r\n\r\nhttps:\/\/media.bccampus.ca\/id\/0_mxbovm73?width=608&amp;height=80&amp;playerId=23449753\r\n\r\nThere are several main styles of fixed electric heating loads, including <strong>[pb_glossary id=\"224\"]baseboard heaters[\/pb_glossary]<\/strong>, <strong>[pb_glossary id=\"142\"]unit heaters[\/pb_glossary]<\/strong>, <strong>[pb_glossary id=\"143\"]heating cable sets[\/pb_glossary]<\/strong> (in-floor heating) and <strong>[pb_glossary id=\"133\"]central electric heating[\/pb_glossary]<\/strong>, which is similar to <strong>[pb_glossary id=\"132\"]central gas heat[\/pb_glossary]<\/strong>, in that there is one source that distributes heat, usually by blowing warmed air through ductwork.\r\n\r\nElectric heating loads are very reliable methods of heating a building. By passing current through a resistive element, our electric heaters produce heat proportional to the square of the applied voltage.\r\n<p style=\"text-align: center;\">[latex]\\text{P}=\\dfrac{\\text{E}^2}{\\text{R}}[\/latex]<\/p>\r\nThis means that if you connect your heating load at half its rated voltage, you will produce one quarter of the power, or consequently if you connected at twice the loads rated voltage you would develop four times the rated power. It is for this reason that <strong>[pb_glossary id=\"200\"]fixed electric heating loads[\/pb_glossary]<\/strong> are connected at 240V, which is the line-to-line voltage inside most houses.","rendered":"<p>Click play on the following audio player to listen along as you read this section.<\/p>\n<p><iframe loading=\"lazy\" id=\"kaltura_player\" title=\"2.10 Electric Heat \u2013 General\" src=\"https:\/\/api.ca.kaltura.com\/p\/148\/sp\/14800\/embedIframeJs\/uiconf_id\/23449753\/partner_id\/148?iframeembed=true&#38;playerId=kaltura_player&#38;entry_id=0_mxbovm73&#38;flashvars[leadWithHTML5]=true&#38;flashvars[streamerType]=auto&#38;flashvars[localizationCode]=en&#38;flashvars[sideBarContainer.plugin]=true&#38;flashvars[sideBarContainer.position]=left&#38;flashvars[sideBarContainer.clickToClose]=true&#38;flashvars[chapters.plugin]=true&#38;flashvars[chapters.layout]=vertical&#38;flashvars[chapters.thumbnailRotator]=false&#38;flashvars[streamSelector.plugin]=true&#38;flashvars[EmbedPlayer.SpinnerTarget]=videoHolder&#38;flashvars[dualScreen.plugin]=true&#38;flashvars[Kaltura.addCrossoriginToIframe]=true&#38;wid=0_rj5gll2m\" width=\"608\" height=\"80\" allowfullscreen=\"allowfullscreen\" sandbox=\"allow-downloads allow-forms allow-same-origin allow-scripts allow-top-navigation allow-pointer-lock allow-popups allow-modals allow-orientation-lock allow-popups-to-escape-sandbox allow-presentation allow-top-navigation-by-user-activation\" frameborder=\"0\"><\/iframe><\/p>\n<p>There are several main styles of fixed electric heating loads, including <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_224\">baseboard heaters<\/a><\/strong>, <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_142\">unit heaters<\/a><\/strong>, <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_143\">heating cable sets<\/a><\/strong> (in-floor heating) and <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_133\">central electric heating<\/a><\/strong>, which is similar to <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_132\">central gas heat<\/a><\/strong>, in that there is one source that distributes heat, usually by blowing warmed air through ductwork.<\/p>\n<p>Electric heating loads are very reliable methods of heating a building. By passing current through a resistive element, our electric heaters produce heat proportional to the square of the applied voltage.<\/p>\n<p style=\"text-align: center;\">[latex]\\text{P}=\\dfrac{\\text{E}^2}{\\text{R}}[\/latex]<\/p>\n<p>This means that if you connect your heating load at half its rated voltage, you will produce one quarter of the power, or consequently if you connected at twice the loads rated voltage you would develop four times the rated power. It is for this reason that <strong><a class=\"glossary-term\" aria-haspopup=\"dialog\" aria-describedby=\"definition\" href=\"#term_48_200\">fixed electric heating loads<\/a><\/strong> are connected at 240V, which is the line-to-line voltage inside most houses.<\/p>\n<div class=\"glossary\"><span class=\"screen-reader-text\" id=\"definition\">definition<\/span><template id=\"term_48_224\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_224\"><div tabindex=\"-1\"><p>An electric heating load installed at baseboard height and locally controlled.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_142\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_142\"><div tabindex=\"-1\"><p>Electric heating load with built-in fan, usually installed at ceiling height.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_143\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_143\"><div tabindex=\"-1\"><p>Heating load installed in floors or under pavement.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_133\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_133\"><div tabindex=\"-1\"><p>A heating system that uses one central electric furnace.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_132\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_132\"><div tabindex=\"-1\"><p>A heating system that uses one central gas furnace.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><template id=\"term_48_200\"><div class=\"glossary__definition\" role=\"dialog\" data-id=\"term_48_200\"><div tabindex=\"-1\"><p>Electric heating loads that are permanently installed and hard wired into a buildings electrical system.<\/p>\n<\/div><button><span aria-hidden=\"true\">&times;<\/span><span class=\"screen-reader-text\">Close definition<\/span><\/button><\/div><\/template><\/div>","protected":false},"author":90,"menu_order":4,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-48","chapter","type-chapter","status-publish","hentry"],"part":37,"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/wp\/v2\/users\/90"}],"version-history":[{"count":3,"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48\/revisions"}],"predecessor-version":[{"id":336,"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48\/revisions\/336"}],"part":[{"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/parts\/37"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapters\/48\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/wp\/v2\/media?parent=48"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/pressbooks\/v2\/chapter-type?post=48"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/wp\/v2\/contributor?post=48"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/basichvac\/wp-json\/wp\/v2\/license?post=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}