{"id":5403,"date":"2026-02-25T14:29:33","date_gmt":"2026-02-25T06:29:33","guid":{"rendered":"https:\/\/www.yroele.com\/?post_type=blog&#038;p=5403"},"modified":"2026-02-25T14:32:49","modified_gmt":"2026-02-25T06:32:49","slug":"the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats","status":"publish","type":"blog","link":"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats","title":{"rendered":"The Difference Between Service Entrance Rated vs. Non-Service Entrance Rated ATS"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Basculer<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" 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: #999;color:#999\" 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><\/span><\/a><\/span><\/div>\n<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.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Introduction\" >Introduction<\/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.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#What_Is_an_Automatic_Transfer_Switch_ATS\" >What Is an Automatic Transfer Switch (ATS)?<\/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.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#What_Does_%E2%80%9CService_Entrance_Rated%E2%80%9D_Mean\" >What Does \u201cService Entrance Rated\u201d Mean?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Definition_Based_on_NEC_Requirements\" >Definition Based on NEC Requirements<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Key_Features_of_a_Service_Entrance_Rated_ATS\" >Key Features of a Service Entrance Rated ATS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Typical_Installation_Position\" >Typical Installation Position<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#What_Is_a_Non-Service_Entrance_Rated_ATS\" >What Is a Non-Service Entrance Rated ATS?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Definition\" >Definition<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Key_Characteristics\" >Key Characteristics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Typical_Applications\" >Applications typiques<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Side-by-Side_Comparison\" >Side-by-Side Comparison<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Which_Type_of_ATS_Do_You_Need\" >Which Type of ATS Do You Need?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Why_Choose_YRO_Automatic_Transfer_Switch\" >Why Choose YRO Automatic Transfer Switch?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.yroele.com\/fr\/news\/the-difference-between-service-entrance-rated-vs-non-service-entrance-rated-ats\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-start=\"84\" data-end=\"102\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"104\" data-end=\"223\">When selecting an <a href=\"https:\/\/www.yroele.com\/fr\/dual-power-transfer-switch\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"122\" data-end=\"157\">automatic transfer switch (ATS)<\/strong><\/a> for a backup power system, one of the most common questions is:<\/p>\n<p data-start=\"225\" data-end=\"312\"><strong data-start=\"225\" data-end=\"312\">Should you choose a service entrance rated ATS or a non-service entrance rated ATS?<\/strong><\/p>\n<p data-start=\"314\" data-end=\"561\">The difference directly affects installation location, code compliance, cost, and system design. For commercial and industrial facilities, choosing the wrong configuration can lead to unnecessary components\u2014or worse, failing electrical inspection.<\/p>\n<p data-start=\"563\" data-end=\"761\">In this guide, we will clearly explain the difference between <strong data-start=\"625\" data-end=\"700\">service entrance rated vs. non-service entrance rated transfer switches<\/strong>, how they function, and which type is best for your project.<\/p>\n<h2 data-start=\"768\" data-end=\"817\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-5392\" src=\"https:\/\/i1.wp.com\/www.yroele.com\/wp-content\/uploads\/2026\/02\/What-Modifications-Have-Been-Made-to-the-New-YRO-ATS.webp?quality=85&strip=all\" alt=\"\" width=\"768\" height=\"480\" srcset=\"https:\/\/i1.wp.com\/www.yroele.com\/wp-content\/uploads\/2026\/02\/What-Modifications-Have-Been-Made-to-the-New-YRO-ATS.webp?quality=85&strip=all 768w, https:\/\/i1.wp.com\/www.yroele.com\/wp-content\/uploads\/2026\/02\/What-Modifications-Have-Been-Made-to-the-New-YRO-ATS-300x188.webp?quality=85&strip=all 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/h2>\n<h2 data-start=\"768\" data-end=\"817\"><span class=\"ez-toc-section\" id=\"What_Is_an_Automatic_Transfer_Switch_ATS\"><\/span>What Is an Automatic Transfer Switch (ATS)?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"819\" data-end=\"1054\">Un <a href=\"https:\/\/www.yroele.com\/fr\/dual-power-transfer-switch\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"822\" data-end=\"851\">commutateur de transfert automatique<\/strong><\/a> is a critical component in standby power systems. It automatically transfers electrical load from utility power to generator power when an outage occurs\u2014and switches back once utility power is restored.<\/p>\n<p data-start=\"1056\" data-end=\"1085\">Typical applications include:<\/p>\n<ul data-start=\"1087\" data-end=\"1222\">\n<li data-start=\"1087\" data-end=\"1112\">\n<p data-start=\"1089\" data-end=\"1112\">Industrial facilities<\/p>\n<\/li>\n<li data-start=\"1113\" data-end=\"1137\">\n<p data-start=\"1115\" data-end=\"1137\">Commercial buildings<\/p>\n<\/li>\n<li data-start=\"1138\" data-end=\"1154\">\n<p data-start=\"1140\" data-end=\"1154\">Data centers<\/p>\n<\/li>\n<li data-start=\"1155\" data-end=\"1180\">\n<p data-start=\"1157\" data-end=\"1180\">Healthcare facilities<\/p>\n<\/li>\n<li data-start=\"1181\" data-end=\"1222\">\n<p data-start=\"1183\" data-end=\"1222\">Residential standby generator systems<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1224\" data-end=\"1239\">An ATS ensures:<\/p>\n<ul data-start=\"1241\" data-end=\"1348\">\n<li data-start=\"1241\" data-end=\"1268\">\n<p data-start=\"1243\" data-end=\"1268\">Continuous power supply<\/p>\n<\/li>\n<li data-start=\"1269\" data-end=\"1309\">\n<p data-start=\"1271\" data-end=\"1309\">Safe isolation between power sources<\/p>\n<\/li>\n<li data-start=\"1310\" data-end=\"1348\">\n<p data-start=\"1312\" data-end=\"1348\">Seamless transition during outages<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1350\" data-end=\"1533\">While all ATS units perform the same transfer function, not all are configured the same way. The key distinction lies in whether the switch includes a <strong data-start=\"1501\" data-end=\"1532\">service disconnect function<\/strong>.<\/p>\n<h2 data-start=\"1540\" data-end=\"1586\"><span class=\"ez-toc-section\" id=\"What_Does_%E2%80%9CService_Entrance_Rated%E2%80%9D_Mean\"><\/span>What Does \u201cService Entrance Rated\u201d Mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"1588\" data-end=\"1632\"><span class=\"ez-toc-section\" id=\"Definition_Based_on_NEC_Requirements\"><\/span>Definition Based on NEC Requirements<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"1634\" data-end=\"1779\">According to the <span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">National Electrical Code<\/span><\/span> (NEC), every building must have a means to disconnect power where it enters the structure.<\/p>\n<p data-start=\"1781\" data-end=\"1804\">This disconnect device:<\/p>\n<ul data-start=\"1806\" data-end=\"1919\">\n<li data-start=\"1806\" data-end=\"1836\">\n<p data-start=\"1808\" data-end=\"1836\">Protects against overcurrent<\/p>\n<\/li>\n<li data-start=\"1837\" data-end=\"1879\">\n<p data-start=\"1839\" data-end=\"1879\">Allows safe isolation from utility power<\/p>\n<\/li>\n<li data-start=\"1880\" data-end=\"1919\">\n<p data-start=\"1882\" data-end=\"1919\">Serves as the main service disconnect<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1921\" data-end=\"2006\">A <strong data-start=\"1923\" data-end=\"1965\">service entrance rated transfer switch<\/strong> is designed to fulfill this requirement.<\/p>\n<h3 data-start=\"2013\" data-end=\"2065\"><span class=\"ez-toc-section\" id=\"Key_Features_of_a_Service_Entrance_Rated_ATS\"><\/span>Key Features of a Service Entrance Rated ATS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2067\" data-end=\"2105\">A service entrance rated ATS includes:<\/p>\n<ul data-start=\"2107\" data-end=\"2270\">\n<li data-start=\"2107\" data-end=\"2147\">\n<p data-start=\"2109\" data-end=\"2147\">A built-in <strong data-start=\"2120\" data-end=\"2147\">main disconnect breaker<\/strong><\/p>\n<\/li>\n<li data-start=\"2148\" data-end=\"2187\">\n<p data-start=\"2150\" data-end=\"2187\">Integrated <strong data-start=\"2161\" data-end=\"2187\">overcurrent protection<\/strong><\/p>\n<\/li>\n<li data-start=\"2188\" data-end=\"2223\">\n<p data-start=\"2190\" data-end=\"2223\">Utility-side isolation capability<\/p>\n<\/li>\n<li data-start=\"2224\" data-end=\"2270\">\n<p data-start=\"2226\" data-end=\"2270\">Compliance with NEC service disconnect rules<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2272\" data-end=\"2404\">Because the disconnect and protection are built into the transfer switch, no separate service disconnect panel is required upstream.<\/p>\n<h3 data-start=\"2411\" data-end=\"2448\"><span class=\"ez-toc-section\" id=\"Typical_Installation_Position\"><\/span>Typical Installation Position<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2450\" data-end=\"2492\">A service entrance rated ATS is installed:<\/p>\n<p data-start=\"2494\" data-end=\"2561\"><strong data-start=\"2494\" data-end=\"2561\">Utility Meter \u2192 Service Entrance Rated ATS \u2192 Distribution Panel<\/strong><\/p>\n<p data-start=\"2563\" data-end=\"2632\">It becomes the <strong data-start=\"2578\" data-end=\"2607\">first disconnecting means<\/strong> after the utility meter.<\/p>\n<p data-start=\"2634\" data-end=\"2666\">This configuration is ideal for:<\/p>\n<ul data-start=\"2668\" data-end=\"2794\">\n<li data-start=\"2668\" data-end=\"2697\">\n<p data-start=\"2670\" data-end=\"2697\">New construction projects<\/p>\n<\/li>\n<li data-start=\"2698\" data-end=\"2726\">\n<p data-start=\"2700\" data-end=\"2726\">Simplified installations<\/p>\n<\/li>\n<li data-start=\"2727\" data-end=\"2755\">\n<p data-start=\"2729\" data-end=\"2755\">Reducing equipment count<\/p>\n<\/li>\n<li data-start=\"2756\" data-end=\"2794\">\n<p data-start=\"2758\" data-end=\"2794\">Lowering overall installation cost<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"2801\" data-end=\"2848\"><span class=\"ez-toc-section\" id=\"What_Is_a_Non-Service_Entrance_Rated_ATS\"><\/span>What Is a Non-Service Entrance Rated ATS?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-start=\"2850\" data-end=\"2868\"><span class=\"ez-toc-section\" id=\"Definition\"><\/span>Definition<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"2870\" data-end=\"2959\">A <strong data-start=\"2872\" data-end=\"2906\">non-service entrance rated ATS<\/strong> does not include a built-in main disconnect breaker.<\/p>\n<p data-start=\"2961\" data-end=\"3021\">It cannot function as the primary service disconnect device.<\/p>\n<h3 data-start=\"3028\" data-end=\"3055\"><span class=\"ez-toc-section\" id=\"Key_Characteristics\"><\/span>Key Characteristics<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3057\" data-end=\"3102\">A non-service entrance rated transfer switch:<\/p>\n<ul data-start=\"3104\" data-end=\"3260\">\n<li data-start=\"3104\" data-end=\"3160\">\n<p data-start=\"3106\" data-end=\"3160\">Does <strong data-start=\"3111\" data-end=\"3118\">not<\/strong> contain internal overcurrent protection<\/p>\n<\/li>\n<li data-start=\"3161\" data-end=\"3212\">\n<p data-start=\"3163\" data-end=\"3212\">Requires a separate upstream service disconnect<\/p>\n<\/li>\n<li data-start=\"3213\" data-end=\"3260\">\n<p data-start=\"3215\" data-end=\"3260\">Is installed downstream of the main breaker<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3262\" data-end=\"3353\">Because it lacks the main disconnect, it must be installed after an existing service panel.<\/p>\n<h3 data-start=\"3360\" data-end=\"3388\"><span class=\"ez-toc-section\" id=\"Typical_Applications\"><\/span>Applications typiques<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p data-start=\"3390\" data-end=\"3448\">Non-service entrance rated ATS units are commonly used in:<\/p>\n<ul data-start=\"3450\" data-end=\"3591\">\n<li data-start=\"3450\" data-end=\"3501\">\n<p data-start=\"3452\" data-end=\"3501\">Existing buildings with an installed main panel<\/p>\n<\/li>\n<li data-start=\"3502\" data-end=\"3533\">\n<p data-start=\"3504\" data-end=\"3533\">Retrofit generator projects<\/p>\n<\/li>\n<li data-start=\"3534\" data-end=\"3591\">\n<p data-start=\"3536\" data-end=\"3591\">Facilities with dedicated upstream protection systems<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3593\" data-end=\"3621\">Typical installation layout:<\/p>\n<p data-start=\"3623\" data-end=\"3705\"><strong data-start=\"3623\" data-end=\"3705\">Utility Meter \u2192 Main Service Panel (Disconnect) \u2192 Non-Service Rated ATS \u2192 Load<\/strong><\/p>\n<p data-start=\"3707\" data-end=\"3797\">This setup works well when a building already has a compliant service disconnect in place.<\/p>\n<h2 data-start=\"3804\" data-end=\"3833\"><span class=\"ez-toc-section\" id=\"Side-by-Side_Comparison\"><\/span>Side-by-Side Comparison<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"3835\" data-end=\"4351\">\n<thead data-start=\"3835\" data-end=\"3908\">\n<tr data-start=\"3835\" data-end=\"3908\">\n<th class=\"\" data-start=\"3835\" data-end=\"3845\" data-col-size=\"sm\">Fonctionnalit\u00e9<\/th>\n<th class=\"\" data-start=\"3845\" data-end=\"3874\" data-col-size=\"sm\">Service Entrance Rated ATS<\/th>\n<th class=\"\" data-start=\"3874\" data-end=\"3908\" data-col-size=\"sm\">Non-Service Entrance Rated ATS<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"3984\" data-end=\"4351\">\n<tr data-start=\"3984\" data-end=\"4029\">\n<td data-start=\"3984\" data-end=\"4002\" data-col-size=\"sm\">Main Disconnect<\/td>\n<td data-col-size=\"sm\" data-start=\"4002\" data-end=\"4013\">Included<\/td>\n<td data-col-size=\"sm\" data-start=\"4013\" data-end=\"4029\">Not included<\/td>\n<\/tr>\n<tr data-start=\"4030\" data-end=\"4087\">\n<td data-start=\"4030\" data-end=\"4055\" data-col-size=\"sm\">Overcurrent Protection<\/td>\n<td data-col-size=\"sm\" data-start=\"4055\" data-end=\"4066\">Built-in<\/td>\n<td data-col-size=\"sm\" data-start=\"4066\" data-end=\"4087\">External required<\/td>\n<\/tr>\n<tr data-start=\"4088\" data-end=\"4174\">\n<td data-start=\"4088\" data-end=\"4112\" data-col-size=\"sm\">Installation Location<\/td>\n<td data-col-size=\"sm\" data-start=\"4112\" data-end=\"4146\">Immediately after utility meter<\/td>\n<td data-col-size=\"sm\" data-start=\"4146\" data-end=\"4174\">Downstream of main panel<\/td>\n<\/tr>\n<tr data-start=\"4175\" data-end=\"4226\">\n<td data-start=\"4175\" data-end=\"4214\" data-col-size=\"sm\">NEC Compliance as Service Disconnect<\/td>\n<td data-col-size=\"sm\" data-start=\"4214\" data-end=\"4220\">Oui<\/td>\n<td data-col-size=\"sm\" data-start=\"4220\" data-end=\"4226\">No<\/td>\n<\/tr>\n<tr data-start=\"4227\" data-end=\"4284\">\n<td data-start=\"4227\" data-end=\"4239\" data-col-size=\"sm\">Ideal For<\/td>\n<td data-col-size=\"sm\" data-start=\"4239\" data-end=\"4258\">New construction<\/td>\n<td data-col-size=\"sm\" data-start=\"4258\" data-end=\"4284\">Existing installations<\/td>\n<\/tr>\n<tr data-start=\"4285\" data-end=\"4351\">\n<td data-start=\"4285\" data-end=\"4303\" data-col-size=\"sm\">Equipment Count<\/td>\n<td data-col-size=\"sm\" data-start=\"4303\" data-end=\"4322\">Fewer components<\/td>\n<td data-col-size=\"sm\" data-start=\"4322\" data-end=\"4351\">Requires additional panel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<p data-start=\"4353\" data-end=\"4507\">Both types perform the same automatic transfer function. The difference lies in <strong data-start=\"4433\" data-end=\"4481\">electrical configuration and code compliance<\/strong>, not performance quality.<\/p>\n<h2 data-start=\"4514\" data-end=\"4550\"><span class=\"ez-toc-section\" id=\"Which_Type_of_ATS_Do_You_Need\"><\/span>Which Type of ATS Do You Need?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"4552\" data-end=\"4598\">The correct choice depends on several factors:<\/p>\n<p data-start=\"4600\" data-end=\"4659\"><strong>Does the building already have a service disconnect?<\/strong><\/p>\n<ul data-start=\"4660\" data-end=\"4795\">\n<li data-start=\"4660\" data-end=\"4732\">\n<p data-start=\"4662\" data-end=\"4732\">Si <strong data-start=\"4665\" data-end=\"4671\">no<\/strong>, a service entrance rated ATS may simplify the installation.<\/p>\n<\/li>\n<li data-start=\"4733\" data-end=\"4795\">\n<p data-start=\"4735\" data-end=\"4795\">Si <strong data-start=\"4738\" data-end=\"4745\">yes<\/strong>, a non-service rated ATS is typically sufficient.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"4797\" data-end=\"4826\">Local Electrical Codes<\/p>\n<p data-start=\"4827\" data-end=\"4925\">While the NEC provides national standards, local jurisdictions may impose additional requirements.<\/p>\n<p data-start=\"4927\" data-end=\"4946\"><strong>Project Type<\/strong><\/p>\n<ul data-start=\"4947\" data-end=\"5101\">\n<li data-start=\"4947\" data-end=\"5023\">\n<p data-start=\"4949\" data-end=\"5023\"><strong data-start=\"4949\" data-end=\"4970\">New construction:<\/strong> Service entrance rated ATS often reduces complexity.<\/p>\n<\/li>\n<li data-start=\"5024\" data-end=\"5101\">\n<p data-start=\"5026\" data-end=\"5101\"><strong data-start=\"5026\" data-end=\"5048\">Retrofit projects:<\/strong> Non-service entrance rated models are commonly used.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5103\" data-end=\"5136\"><strong>System Design Requirements<\/strong><\/p>\n<p data-start=\"5137\" data-end=\"5277\">Large industrial power distribution systems sometimes separate protection and switching functions intentionally for engineering flexibility.<\/p>\n<p data-start=\"5279\" data-end=\"5291\">Importantly:<\/p>\n<blockquote data-start=\"5293\" data-end=\"5374\">\n<p data-start=\"5295\" data-end=\"5374\">Neither type is \u201cbetter.\u201d They serve different electrical system architectures.<\/p>\n<\/blockquote>\n<h2 data-start=\"5381\" data-end=\"5428\"><span class=\"ez-toc-section\" id=\"Why_Choose_YRO_Automatic_Transfer_Switch\"><\/span>Why Choose YRO Automatic Transfer Switch?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"5430\" data-end=\"5563\">At YRO, we manufacture high-performance <a href=\"https:\/\/www.yroele.com\/fr\/dual-power-transfer-switch\/\" target=\"_blank\" rel=\"noopener\"><strong data-start=\"5470\" data-end=\"5501\">Commutateurs de transfert automatiques<\/strong><\/a> designed for commercial and industrial standby power systems.<\/p>\n<p data-start=\"5565\" data-end=\"5589\">Our ATS solutions offer:<\/p>\n<ul data-start=\"5591\" data-end=\"5871\">\n<li data-start=\"5591\" data-end=\"5655\">\n<p data-start=\"5593\" data-end=\"5655\">Service entrance rated and non-service entrance rated models<\/p>\n<\/li>\n<li data-start=\"5656\" data-end=\"5692\">\n<p data-start=\"5658\" data-end=\"5692\">Compliance with NEC requirements<\/p>\n<\/li>\n<li data-start=\"5693\" data-end=\"5738\">\n<p data-start=\"5695\" data-end=\"5738\">Integrated overcurrent protection options<\/p>\n<\/li>\n<li data-start=\"5739\" data-end=\"5775\">\n<p data-start=\"5741\" data-end=\"5775\">Multiple amperage configurations<\/p>\n<\/li>\n<li data-start=\"5776\" data-end=\"5829\">\n<p data-start=\"5778\" data-end=\"5829\">Reliable performance for generator backup systems<\/p>\n<\/li>\n<li data-start=\"5830\" data-end=\"5871\">\n<p data-start=\"5832\" data-end=\"5871\">Durable industrial-grade construction<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"5873\" data-end=\"6037\">Whether your project requires a built-in service disconnect or a downstream transfer solution, YRO provides flexible configurations to match your electrical design.<\/p>\n<p data-start=\"6039\" data-end=\"6153\">Our engineering team can assist with proper ATS selection to ensure safety, compliance, and long-term reliability.<\/p>\n<h2 data-start=\"6160\" data-end=\"6176\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-start=\"6178\" data-end=\"6346\">Understanding the difference between <strong data-start=\"6215\" data-end=\"6276\">service entrance rated vs. non-service entrance rated ATS<\/strong> is essential for proper system design and electrical code compliance.<\/p>\n<p data-start=\"6348\" data-end=\"6361\">To summarize:<\/p>\n<ul data-start=\"6363\" data-end=\"6668\">\n<li data-start=\"6363\" data-end=\"6530\">\n<p data-start=\"6365\" data-end=\"6530\">A <strong data-start=\"6367\" data-end=\"6409\">service entrance rated transfer switch<\/strong> includes a built-in main disconnect and overcurrent protection, serving as the first disconnect after the utility meter.<\/p>\n<\/li>\n<li data-start=\"6531\" data-end=\"6668\">\n<p data-start=\"6533\" data-end=\"6668\">A <strong data-start=\"6535\" data-end=\"6581\">non-service entrance rated transfer switch<\/strong> requires an upstream service disconnect and is installed downstream of the main panel.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"6670\" data-end=\"6771\">Both perform the same automatic transfer function\u2014but they serve different installation environments.<\/p>\n<p data-start=\"6773\" data-end=\"6924\">Before selecting your automatic transfer switch, evaluate your building\u2019s electrical configuration and consult with qualified electrical professionals.<\/p>\n<p data-start=\"6926\" data-end=\"7071\" data-is-last-node=\"\" data-is-only-node=\"\">If you are planning a new standby power system or upgrading an existing one, <a href=\"https:\/\/www.yroele.com\/fr\/contact-us\/\" target=\"_blank\" rel=\"noopener\">YRO can help you choose the right ATS solution for your application<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction When selecting an automatic transfer switch (ATS) for a backup power system, one of the most common questions is: Should you choose a service entrance rated ATS or a non-service entrance rated ATS? The difference directly affects installation location, code compliance, cost, and system design. For commercial and industrial facilities, choosing the wrong configuration [&hellip;]<\/p>\n","protected":false},"featured_media":5392,"template":"","meta":{"_acf_changed":false,"footnotes":""},"blog_category":[20],"class_list":["post-5403","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-knowledge"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/blog\/5403","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/types\/blog"}],"version-history":[{"count":5,"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/blog\/5403\/revisions"}],"predecessor-version":[{"id":5408,"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/blog\/5403\/revisions\/5408"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/media\/5392"}],"wp:attachment":[{"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/media?parent=5403"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.yroele.com\/fr\/wp-json\/wp\/v2\/blog_category?post=5403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}