{"id":4126,"date":"2025-05-30T10:00:00","date_gmt":"2025-05-30T10:00:00","guid":{"rendered":"https:\/\/www.topcable.com\/blog-electric-cable\/?p=4126"},"modified":"2025-07-23T06:32:41","modified_gmt":"2025-07-23T06:32:41","slug":"reaction-to-fire-on-cpr-cables","status":"publish","type":"post","link":"https:\/\/www.topcable.com\/blog-electric-cable\/reaction-to-fire-on-cpr-cables\/","title":{"rendered":"Reaction to fire test of CPR cables"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">CPR European regulations prescribe severe fire test in official laboratories to analyse their reaction to fire. Official results of these tests indicate the performance of these cables before the fire, reflected in class B2<sub>ca<\/sub>, C<sub>ca<\/sub>, D<sub>ca<\/sub> or E<sub>ca<\/sub>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The regulation of &nbsp;Construction Products Regulation (CPR), in force since July 1st, 2016,&nbsp;requires cable manufacturers, distributors, project managers, architects,&nbsp;builders and installers across Europe to provide&nbsp;cables with the correct CPR classification in&nbsp;construction buildings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During the reaction to fire test, heat release and flame spread are constantly measured.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-left-text counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6a6b6bbde472d\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"ez-toc-title\" style=\"cursor:inherit\">INDEX<\/span>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #444444;color:#444444\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #444444;color:#444444\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a6b6bbde472d\" checked \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.topcable.com\/blog-electric-cable\/reaction-to-fire-on-cpr-cables\/#reaction-to-fire-test-parameters\" >REACTION TO FIRE TEST PARAMETERS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.topcable.com\/blog-electric-cable\/reaction-to-fire-on-cpr-cables\/#non-propagation-flame\" >NON-PROPAGATION FLAME<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.topcable.com\/blog-electric-cable\/reaction-to-fire-on-cpr-cables\/#additional-classification-levels\" >ADDITIONAL CLASSIFICATION LEVELS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.topcable.com\/blog-electric-cable\/reaction-to-fire-on-cpr-cables\/#what-cpr-classification-is-required-in-all-european-countries\" >What CPR classification is required in all European countries?<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"reaction-to-fire-test-parameters\"><\/span>REACTION TO FIRE TEST PARAMETERS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">With reference to the reaction of the cable on contact with flame according to CPR, the reaction to fire test carried out in the test laboratory follows the following parameters:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Standard: EN 50399<\/li>\n\n\n\n<li>Fire Cabin<\/li>\n\n\n\n<li>Vertical cable ladder<\/li>\n\n\n\n<li>Gas analysers<\/li>\n\n\n\n<li>Fire burner 20 kW<\/li>\n\n\n\n<li>Heat release rate<\/li>\n\n\n\n<li>No flame spread<\/li>\n\n\n\n<li>Smoke production<\/li>\n\n\n\n<li>Particulate fallout<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">You can see how the reaction to fire test works in the following video.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-3e41869c wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a title=\"Fire test\" class=\"wp-block-button__link has-azul-boton-background-color has-background wp-element-button\" href=\"https:\/\/www.youtube.com\/watch?v=1ao5ZKtpCts\" target=\"_blank\" rel=\"noreferrer noopener\">VIDEO REACTION TO FIRE TEST<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"non-propagation-flame\"><\/span>NON-PROPAGATION FLAME<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Among many other relevant aspects, B2<sub>ca<\/sub> cables must not propagation flame more than 1.5 metres. C<sub>ca<\/sub> cables should not propagation flame more than 2 metres. Therefore, the installation of B2<sub>ca<\/sub> or C<sub>ca<\/sub> cables prevents a localised fire from spreading to other areas through the cable network.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover\"><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-7457 lazyload\" alt=\"fire test\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2018\/10\/test-fuego-cpr-2.jpg\" data-object-fit=\"cover\"\/><noscript><img decoding=\"async\" width=\"1024\" height=\"577\" class=\"wp-block-cover__image-background wp-image-7457 lazyload\" alt=\"fire test\" src=\"https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2018\/10\/test-fuego-cpr-2.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2018\/10\/test-fuego-cpr-2.jpg 1024w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2018\/10\/test-fuego-cpr-2-300x169.jpg 300w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2018\/10\/test-fuego-cpr-2-768x433.jpg 768w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2018\/10\/test-fuego-cpr-2-624x352.jpg 624w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#725c24\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"additional-classification-levels\"><\/span>ADDITIONAL CLASSIFICATION LEVELS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>In addition, the CPR provide three additional levels of classification:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The amount of smoke produced, indicated by the following rankings s1a, s1b, s3 or s2.<\/li>\n\n\n\n<li>Combustible particles falling during the cable combustion, indicated by d0, d1 and d2.<\/li>\n\n\n\n<li>The acidity level of the smoke produced during the combustion, classified as a1, a2 and a3.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">These additional classifications are vital when it comes to safety in case of fire.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng.png\" alt=\"CPR Classes\" class=\"wp-image-15445 lazyload\"\/><noscript><img decoding=\"async\" width=\"931\" height=\"600\" src=\"https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng.png\" alt=\"CPR Classes\" class=\"wp-image-15445 lazyload\" srcset=\"https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng.png 931w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng-300x193.png 300w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng-1024x660.png 1024w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng-768x495.png 768w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng-1536x990.png 1536w, https:\/\/www.topcable.com\/blog-electric-cable\/wp-content\/uploads\/2021\/10\/cpr-eng-624x402.png 624w\" sizes=\"(max-width: 931px) 100vw, 931px\" \/><\/noscript><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"what-cpr-classification-is-required-in-all-european-countries\"><\/span>What CPR classification is required in all European countries?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">National regulations prescribe specific classes based on the environment and installation rules.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In most European countries class&nbsp;C<sub>ca<\/sub> is required in public places with high density if people and important equipment such as: offices, schools, hotels, hospitals and suchlike.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Top Cable provides a wide range of cables with the maximum CPR performance. For more information, <a title=\"contact\" href=\"https:\/\/www.topcable.com\/contact\/\" target=\"_blank\" rel=\"noreferrer noopener\">contact with our sales team<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CPR European regulations prescribe severe fire test in official laboratories to analyse their reaction to fire. Official results of these tests indicate the performance of these cables before the fire, reflected in class B2ca, Cca, Dca or Eca. The regulation of &nbsp;Construction Products Regulation (CPR), in force since July 1st, 2016,&nbsp;requires cable manufacturers, distributors, project [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":32238,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[588],"tags":[],"class_list":["post-4126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-top-cable-en"],"_links":{"self":[{"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/posts\/4126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/comments?post=4126"}],"version-history":[{"count":14,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/posts\/4126\/revisions"}],"predecessor-version":[{"id":32927,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/posts\/4126\/revisions\/32927"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/media\/32238"}],"wp:attachment":[{"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/media?parent=4126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/categories?post=4126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topcable.com\/blog-electric-cable\/wp-json\/wp\/v2\/tags?post=4126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}