{"id":217595,"date":"2025-05-22T07:07:14","date_gmt":"2025-05-22T07:07:14","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=217595"},"modified":"2025-05-22T07:07:16","modified_gmt":"2025-05-22T07:07:16","slug":"an-unspliced-__-that-is-sized-based-on-the-derived-phase-conductors-shall-be-used-to-connect-the-grounded-conductor-and-the-supply-side-bonding-jumper-or-the-equipment-grounding-conductor-or-both-a-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/22\/an-unspliced-__-that-is-sized-based-on-the-derived-phase-conductors-shall-be-used-to-connect-the-grounded-conductor-and-the-supply-side-bonding-jumper-or-the-equipment-grounding-conductor-or-both-a-2\/","title":{"rendered":"An unspliced __ that is sized based on the derived phase conductors shall be used to connect the grounded conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately derived system."},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An unspliced __ that is sized based on the derived phase conductors shall be used to connect the grounded conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately derived system.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">system bonding jumper<br>equipment grounding conductor<br>grounded conductor<br>grounding electrode conductor<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correct Answer: System Bonding Jumper<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In the context of electrical systems, especially those involving <strong>separately derived systems<\/strong> (SDS) such as transformers or generators, proper bonding and grounding are crucial for system safety, equipment protection, and personnel safety. The National Electrical Code (NEC) provides guidelines on how to make these connections correctly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>system bonding jumper<\/strong> is a critical component in these setups.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">The question refers to an <strong>unspliced conductor<\/strong> that connects the <strong>grounded conductor<\/strong> (typically the neutral) to the <strong>equipment grounding conductor (EGC)<\/strong> or the <strong>supply-side bonding jumper (SSBJ)<\/strong>, or both, at a <strong>separately derived system<\/strong>. This role is performed by the <strong>system bonding jumper<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">What is a System Bonding Jumper?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>system bonding jumper<\/strong> is the connection between the <strong>grounded conductor<\/strong> (neutral) and the <strong>equipment grounding conductor<\/strong> or <strong>bonding means<\/strong> at the source of a separately derived system, such as a transformer or generator.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to <strong>NEC Article 250.30(A)(1)<\/strong>:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><em>\u201cAn unspliced system bonding jumper, sized based on the derived ungrounded conductors, shall be used to connect the grounded conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both.\u201d<\/em><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">This bonding jumper ensures a <strong>low-impedance path<\/strong> for fault current, allowing overcurrent protection devices (like breakers or fuses) to function properly in the event of a ground fault.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Why is It Important?<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Safety<\/strong>: It prevents the build-up of voltages on non-current-carrying metallic parts by ensuring an effective fault path.<\/li>\n\n\n\n<li><strong>System Protection<\/strong>: Allows for quick operation of protective devices during faults.<\/li>\n\n\n\n<li><strong>Code Compliance<\/strong>: The NEC mandates it for all separately derived systems to prevent hazardous conditions.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Common Mistake:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Some may confuse the <strong>system bonding jumper<\/strong> with the <strong>grounding electrode conductor (GEC)<\/strong> or <strong>equipment grounding conductor<\/strong>, but these serve different purposes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>GEC<\/strong> connects the SDS to the grounding electrode (e.g., ground rod).<\/li>\n\n\n\n<li><strong>EGC<\/strong> runs with the circuit conductors and carries fault current from the load.<\/li>\n\n\n\n<li><strong>System bonding jumper<\/strong> connects the neutral to the EGC and\/or SSBJ <strong>at the SDS<\/strong>.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Summary:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Thus, the correct answer is <strong>system bonding jumper<\/strong>, as it is the unspliced conductor used to connect the grounded conductor to the supply-side bonding jumper or equipment grounding conductor at a separately derived system.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/05\/image-13.png\" alt=\"\" class=\"wp-image-217596\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>An unspliced __ that is sized based on the derived phase conductors shall be used to connect the grounded conductor and the supply-side bonding jumper, or the equipment grounding conductor, or both, at a separately derived system. system bonding jumperequipment grounding conductorgrounded conductorgrounding electrode conductor The Correct Answer and Explanation is: Correct Answer: System Bonding [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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