{"id":1894,"date":"2023-02-22T11:41:34","date_gmt":"2023-02-22T10:41:34","guid":{"rendered":"https:\/\/www.gt-engineering.it\/approfondimenti\/%tipologia_approfondimento%\/exposed-conductive-part-and-grounding\/"},"modified":"2026-02-07T18:07:21","modified_gmt":"2026-02-07T17:07:21","slug":"exposed-conductive-part-and-earthing-grounding","status":"publish","type":"approfondimento","link":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/","title":{"rendered":"Exposed-conductive-part and Earthing (Grounding)"},"content":{"rendered":"\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/3\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/impianto-messa-a-terra1.jpg-150x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/impianto-messa-a-terra1.jpg-300x150.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 748px)\"\r\n                                width=\"748\"\r\n                                height=\"373\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/impianto-messa-a-terra1.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 748px)\"\r\n                                width=\"748\"\r\n                                height=\"373\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/impianto-messa-a-terra1.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/impianto-messa-a-terra1.jpg.webp\"\r\n                                                        title=\"impianto-messa-a-terra1.jpg\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <h2 style=\"text-align: justify;\"><strong>THE DOUBT:<\/strong><\/h2>\n<p>In the design of the electrical system, how can I distinguish which metal parts are exposed conductive part? Is bonding all\u00a0metal parts a valid safety measure, or can it even be counterproductive?<\/p>\n<p>&nbsp;<\/p>\n<h2 style=\"text-align: justify;\"><strong>CONSIDERATIONS:<\/strong><\/h2>\n<p style=\"text-align: justify;\">The difference between Exposed Conductive Parts (ECP) and a normal conductive part can be un unclear. For an exact definition of exposed conductive part we refer to<strong> IEC 61141:<\/strong><\/p>\n<blockquote>\n<p style=\"text-align: justify;\"><strong>[IEC 61141-3.6]<\/strong> <em><strong>Exposed-conductive-part<\/strong>: conductive part of equipment, which can be touched, and which is not normally live, but <strong>which can become live when basic insulation fails. <\/strong><\/em><\/p>\n<\/blockquote>\n<p style=\"text-align: justify;\">How should metal frames in direct contact with an exposed conductive part be considered? Since they can become energised when the exposed conductive part itself is subject to a ground fault and becomes energise? Again, the standard clarifies the situation:<\/p>\n<blockquote>\n<p style=\"text-align: justify;\"><strong>[IEC 61141-3.6- Note 1]<\/strong> <em>&#8221; A conductive part of electrical equipment which can become alive only through contact with an exposed conductive part which has become live, <strong>is not considered to be an exposed conductive part itself.&#8221;<\/strong><\/em><\/p>\n<\/blockquote>\n<p style=\"text-align: justify;\">For example, the frame of\u00a0<strong>an electrical motor is an Exposed conductive part, while his metal basement is not an exposed conductive part,<\/strong> although, in the event of a ground fault, both can become energised.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\"><strong>Every exposed conductive part, in order to be adequately protected for indirect contact (Fault protection), have to be bonded<\/strong>. However, this fundamental rule is often misinterpreted; here are, for example, some <strong><u>incorrect statements<\/u><\/strong> regarding exposed conductive part and grounding:<\/p>\n<ul>\n<li style=\"text-align: justify;\">Anything that can become energised must be bonded.<\/li>\n<li style=\"text-align: justify;\">Metal parts that do not move must be grounded (<em>if it doesn&#8217;t move, than ground it<\/em>).<\/li>\n<li style=\"text-align: justify;\">Grounding &#8220;discharges&#8221; the fault current to the ground.<\/li>\n<li style=\"text-align: justify;\">Grounding keeps the exposed conductive part <a href=\"https:\/\/www.gt-engineering.it\/en\/technical-standards\/en-iec-standards\/iec-60364-4-41\/\/tn-systems\">at ground potentia<\/a>l (zero), even in the event of a failure&#8230;. Very wrong!!!<\/li>\n<\/ul>\n<p data-start=\"141\" data-end=\"680\"><strong data-start=\"141\" data-end=\"165\">Earthing (grounding)<\/strong> is intended to create a low-impedance fault loop that allows sufficient fault current to flow so that protective devices\u2014such as circuit breakers or RCDs\u2014can detect the fault and disconnect the supply.<br data-start=\"367\" data-end=\"370\" \/>It does <strong data-start=\"378\" data-end=\"385\">not<\/strong> discharge current into the earth, nor does it force exposed conductive parts to assume earth potential. If that were the case, touching an exposed conductive part during a ground fault would present no risk of electric shock, and overcurrent or residual current protection would be unnecessary.<\/p>\n<p data-start=\"682\" data-end=\"1128\">Misunderstanding this principle often leads to the incorrect practice of bonding all large metal parts, including those that are not exposed conductive parts and are not liable to become live in the event of a fault. This practice is not only unnecessary but can also be dangerous.<br data-start=\"963\" data-end=\"966\" \/>Only <strong data-start=\"971\" data-end=\"999\">exposed conductive parts<\/strong>\u2014that is, conductive parts that can become live under fault conditions\u2014shall be connected to the protective earth (PE) conductor.\u00a0Let\u2019s, for example, look at the two scenarios in the figure below.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start flex-col\">\n\n    \n\n        \n                    <div\n                class=\"h-auto order-2    overflow-hidden shadow-content-image w-full md:w-1\/2\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/Earthing-150x150.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 300px)\"\r\n                                width=\"300\"\r\n                                height=\"105\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/Earthing-300x105.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 768px)\"\r\n                                width=\"768\"\r\n                                height=\"269\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/Earthing-768x269.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 1024px)\"\r\n                                width=\"1024\"\r\n                                height=\"359\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/Earthing-1024x359.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full mx-auto\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/02\/Earthing.jpg.webp\"\r\n                                                        title=\"Earthing\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start flex-col\">\n\n    \n\n                    <div \n                class=\"order-2 relative w-full\"\n            >\n                <div\n                    class=\"pt-6 space-y-6 w-full md:pt-0 md:space-y-4 lg:space-y-8 xl:space-y-9\"\n                >\n                    \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p data-start=\"180\" data-end=\"606\">The example is developed in the context of the U.S. market (480 V AC phase-to-phase), but the same principles apply equally in Europe. In both cases, the motor is mounted on anti-vibration pads, so the motor is not in direct contact with the dark grey conductive part. Two persons are involved: <strong data-start=\"455\" data-end=\"467\">Person A<\/strong>, who touches the motor frame, and <strong data-start=\"502\" data-end=\"514\">Person B<\/strong>, who touches a separate conductive part that is in mechanical contact with the motor frame.<\/p>\n<h3 data-start=\"608\" data-end=\"667\">Situation A \u2013 Conductive part <strong data-start=\"642\" data-end=\"649\">not<\/strong> connected to PE<\/h3>\n<p data-start=\"668\" data-end=\"1014\">The conductive part touched by Person B is not connected to a protective earth (PE) conductor.<br data-start=\"762\" data-end=\"765\" \/>In the event of an insulation fault in the motor stator winding, the motor frame becomes energised. <strong data-start=\"860\" data-end=\"872\">Person A<\/strong> is therefore exposed to an electric shock, while <strong data-start=\"922\" data-end=\"934\">Person B<\/strong> is not.<\/p>\n<p data-start=\"1016\" data-end=\"1247\">In this scenario, severe injury for person A is unlikely because the overcurrent protection device (OCPD) will clear the fault by opening the fault loop within the prescribed disconnection time (typically 0.2 s in the U.S. and 0.4 s in Europe).<\/p>\n<h3 data-start=\"1249\" data-end=\"1300\">Situation B \u2013 Conductive part connected to PE<\/h3>\n<p data-start=\"1301\" data-end=\"1633\">The conductive part touched by Person B is connected to the protective earth (PE) conductor.<br data-start=\"1385\" data-end=\"1388\" \/>In the event of the same insulation fault, both the motor frame and the bonded conductive part rise to a dangerous touch voltage until the OCPD disconnects the supply. As a result, <strong data-start=\"1569\" data-end=\"1599\">both Person A and Person B<\/strong> are exposed to an electric shock.<\/p>\n<p data-start=\"1635\" data-end=\"1742\">Again, fatal injury is unlikely because the OCPD will disconnect the fault within the required safety time.<\/p>\n<h3 data-start=\"1744\" data-end=\"1767\">Safety assessment<\/h3>\n<p data-start=\"1768\" data-end=\"2086\">The key question is: <strong data-start=\"1789\" data-end=\"1818\">which situation is safer?<\/strong><br data-start=\"1818\" data-end=\"1821\" \/>Situation B is clearly worse. By connecting a PE conductor to a conductive part that is <strong data-start=\"1909\" data-end=\"1916\">not<\/strong> an exposed conductive part, the fault is unnecessarily extended to additional accessible metalwork, increasing the number of persons exposed to hazardous touch voltages.<\/p>\n<p data-start=\"2088\" data-end=\"2396\">This example illustrates why only <strong data-start=\"2122\" data-end=\"2150\">exposed conductive parts<\/strong>\u2014that is, a conductive parts that can become live under fault conditions\u2014shall be connected to the protective earth. Bonding conductive parts that are not exposed conductive parts does not improve safety and can, in fact, increase the overall risk.<\/p>\n<\/div>                <\/div>\n            <\/div>\n        \n        \n    <\/div>\n        <\/section>\n\n    \n\n\n\n\n    \n        <section\n            data-name=\"Contenuto testuale con immagine\"\n            class=\"bow-gte-testo-media u-spacer-base\"\n            id=\"\"\n        >\n            \n<div class=\"o-text-media px-side-spacer sm:px-side-spacer-sm lg:px-side-spacer-tablet 2xl:px-side-spacer-desktop flex flex-wrap items-start md:block\">\n\n    \n        \n                    <div\n                class=\"h-auto mb-6 md:mb-4 lg:mb-8 xl:mb-9 float-left mr-6 md:mr-4 lg:mr-8 xl:mr-9  overflow-hidden shadow-content-image w-full md:w-1\/2\"\n            >\n                \r\n\r\n    \r\n        \r\n            \r\n                \r\n                    <picture\r\n                        class=\"\"\r\n                                            >\r\n                                                                                                        <source\r\n                                media=\"(max-width: 150px)\"\r\n                                width=\"150\"\r\n                                height=\"150\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/porta-a-terra1-150x150.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 225px)\"\r\n                                width=\"225\"\r\n                                height=\"300\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/porta-a-terra1-225x300.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 524px)\"\r\n                                width=\"524\"\r\n                                height=\"700\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/porta-a-terra1.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                                <source\r\n                                media=\"(max-width: 524px)\"\r\n                                width=\"524\"\r\n                                height=\"700\"\r\n                                srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/porta-a-terra1.jpg.webp\"\r\n                                type=\"image\/webp\"\r\n                            \/>\r\n                                                                            <img\r\n                            class=\"a-image transparent border-image h-auto  w-full\"\r\n                                                        srcset=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/porta-a-terra1.jpg.webp\"\r\n                                                        title=\"porta-a-terra1\"\r\n                                                        type=\"image\/webp\"\r\n                        \/>\r\n                    <\/picture>\r\n\r\n                \r\n\r\n                    \r\n    \r\n            <\/div>\n        \n                    <div class=\"relative w-full\">\n                \n<div class=\"a-text font-text text-base normal mt-8 first:mt-0 space-y-4\">\n    <p>Similar situations frequently arise with fixed shelters, metal doors, frames, and structural supports.<strong> Connecting these parts to a protective earth (PE) conductor can increase the risk<\/strong> in the event of an electrical fault rather than reduce it.<\/p>\n<p>For example, a metal door of an electrical room\u2014such as the red door of a panel room\u2014cannot normally become live, as it is sufficiently distant from any electrical equipment and not subject to insulation failure. If this door is nevertheless connected to a PE conductor, then during an earth fault occurring anywhere in the installation,<strong> the door may be brought to a hazardous touch voltage<\/strong>. In this case, the PE connection does not improve safety; instead, <strong>it reduces the overall safety level<\/strong> of the plant by unnecessarily extending the fault to accessible metalwork.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>CONCLUSIONS<\/strong><\/p>\n<p>Among the conductive parts of an electrical installation,<strong> only those that may become energised as a result of a failure of the main insulation shall be considered exposed conductive parts.<\/strong><br \/>\nOnce identified, all exposed conductive parts must be connected to the protective earth (PE) conductor in order to ensure automatic disconnection of supply and to prevent the risk of electric shock.<\/p>\n<p>Conversely, conductive parts that are not exposed conductive parts<strong> shall not be connected to the PE conductor.<\/strong> Bonding such parts does not provide additional protection and may increase the risk to persons by spreading dangerous touch voltages during an electrical fault.<\/p>\n<\/div>            <\/div>\n        \n        \n                <div class=\"clear-both\"><\/div>\n        \n\n    <\/div>\n        <\/section>\n\n    \n","protected":false},"excerpt":{"rendered":"<p>&nbsp;<\/p>\n<p>THE DOUBT<br \/>\nIn the design of the electrical system, how can I distinguish which of the metal parts is an exposed conductive part? Is bonding all&nbsp;meta&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1895,"parent":0,"menu_order":64,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tipologia_approfondimento":[51],"class_list":["post-1894","approfondimento","type-approfondimento","status-publish","has-post-thumbnail","hentry","tipologia_approfondimento-electrical-hazard-and-arc-flash-mitigation"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>EXPOSED-CONDUCTIVE-PART AND EARTHING (GROUNDING)<\/title>\n<meta name=\"description\" content=\"\u00a0 THE DOUBT In the design of the electrical system, how can I d...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"EXPOSED CONDUCTIVE PART AND GROUNDING\" \/>\n<meta property=\"og:description\" content=\"\u00a0 THE DOUBT In the design of the electrical system, how can I d...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/\" \/>\n<meta property=\"og:site_name\" content=\"Gt-Engineering\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-07T17:07:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"EXPOSED CONDUCTIVE PART AND GROUNDING\" \/>\n<meta name=\"twitter:description\" content=\"\u00a0 THE DOUBT In the design of the electrical system, how can I d...\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/\",\"url\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/\",\"name\":\"EXPOSED-CONDUCTIVE-PART AND EARTHING (GROUNDING)\",\"isPartOf\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg\",\"datePublished\":\"2023-02-22T10:41:34+00:00\",\"dateModified\":\"2026-02-07T17:07:21+00:00\",\"description\":\"\u00a0 THE DOUBT In the design of the electrical system, how can I d...\",\"breadcrumb\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#primaryimage\",\"url\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg\",\"contentUrl\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg\",\"width\":748,\"height\":373,\"caption\":\"EXPOSED CONDUCTIVE PART AND GROUNDING\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Insights\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/approfondimenti\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Electrical Safety and Arc Flash Mitigation\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Exposed-conductive-part and Earthing (Grounding)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/#website\",\"url\":\"https:\/\/www.gt-engineering.it\/en\/\",\"name\":\"Gt-Engineering\",\"description\":\"bizonweb\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.gt-engineering.it\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"EXPOSED-CONDUCTIVE-PART AND EARTHING (GROUNDING)","description":"\u00a0 THE DOUBT In the design of the electrical system, how can I d...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/","og_locale":"en_US","og_type":"article","og_title":"EXPOSED CONDUCTIVE PART AND GROUNDING","og_description":"\u00a0 THE DOUBT In the design of the electrical system, how can I d...","og_url":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/","og_site_name":"Gt-Engineering","article_modified_time":"2026-02-07T17:07:21+00:00","og_image":[{"url":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_title":"EXPOSED CONDUCTIVE PART AND GROUNDING","twitter_description":"\u00a0 THE DOUBT In the design of the electrical system, how can I d...","twitter_image":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/","url":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/","name":"EXPOSED-CONDUCTIVE-PART AND EARTHING (GROUNDING)","isPartOf":{"@id":"https:\/\/www.gt-engineering.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#primaryimage"},"image":{"@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#primaryimage"},"thumbnailUrl":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg","datePublished":"2023-02-22T10:41:34+00:00","dateModified":"2026-02-07T17:07:21+00:00","description":"\u00a0 THE DOUBT In the design of the electrical system, how can I d...","breadcrumb":{"@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#primaryimage","url":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg","contentUrl":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/impianto-messa-a-terra1.jpg","width":748,"height":373,"caption":"EXPOSED CONDUCTIVE PART AND GROUNDING"},{"@type":"BreadcrumbList","@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/exposed-conductive-part-and-earthing-grounding\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.gt-engineering.it\/en\/"},{"@type":"ListItem","position":2,"name":"Insights","item":"https:\/\/www.gt-engineering.it\/en\/approfondimenti\/"},{"@type":"ListItem","position":3,"name":"Electrical Safety and Arc Flash Mitigation","item":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/"},{"@type":"ListItem","position":4,"name":"Exposed-conductive-part and Earthing (Grounding)"}]},{"@type":"WebSite","@id":"https:\/\/www.gt-engineering.it\/en\/#website","url":"https:\/\/www.gt-engineering.it\/en\/","name":"Gt-Engineering","description":"bizonweb","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.gt-engineering.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento\/1894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento"}],"about":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/types\/approfondimento"}],"author":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":23,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento\/1894\/revisions"}],"predecessor-version":[{"id":51031,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento\/1894\/revisions\/51031"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/media\/1895"}],"wp:attachment":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/media?parent=1894"}],"wp:term":[{"taxonomy":"tipologia_approfondimento","embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/tipologia_approfondimento?post=1894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}