{"id":4395,"date":"2024-02-29T09:47:15","date_gmt":"2024-02-29T15:47:15","guid":{"rendered":"https:\/\/www.dreiym.com\/?p=4395"},"modified":"2025-09-24T14:13:40","modified_gmt":"2025-09-24T20:13:40","slug":"ufer-la-mise-a-la-terre-une-methode-rentable-et-fiable-pour-la-securite-electrique","status":"publish","type":"post","link":"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2024\/02\/29\/ufer-la-mise-a-la-terre-une-methode-rentable-et-fiable-pour-la-securite-electrique\/","title":{"rendered":"La mise \u00e0 la terre de l'Ufer : Une m\u00e9thode fiable pour la s\u00e9curit\u00e9 \u00e9lectrique"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Qu'est-ce que l'Ufer Grounding ?<\/h2>\n\n\n\n<p>La mise \u00e0 la terre Ufer est une technique de mise \u00e0 la terre des syst\u00e8mes \u00e9lectriques en les connectant \u00e0 une \u00e9lectrode enrob\u00e9e de b\u00e9ton. Le terme Ufer vient du nom de Herbert G. Ufer, un ing\u00e9nieur qui a d\u00e9velopp\u00e9 cette m\u00e9thode pendant la Seconde Guerre mondiale. La mise \u00e0 la terre Ufer est \u00e9galement connue sous le nom de mise \u00e0 la terre enrob\u00e9e de b\u00e9ton ou de mise \u00e0 la terre des fondations.<\/p>\n\n\n\n<p>La mise \u00e0 la terre d'Ufer n'\u00e9tait pas seulement efficace, elle \u00e9tait aussi \u00e9conomique et simple \u00e0 mettre en \u0153uvre. Ufer a estim\u00e9 que le co\u00fbt de la mise \u00e0 la terre d'un d\u00e9p\u00f4t selon sa m\u00e9thode \u00e9tait d'environ $60, contre $5000 pour un syst\u00e8me conventionnel de tiges et de grilles. Ufer <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2022\/12\/21\/avantages-de-lanalyse-du-sol-pour-votre-batiment-commercial\/\">La mise \u00e0 la terre n\u00e9cessite \u00e9galement moins d'entretien et de tests,<\/a> car l'\u00e9lectrode en b\u00e9ton \u00e9tait prot\u00e9g\u00e9e de la corrosion et des dommages physiques. <\/p>\n\n\n\n<p>La mise \u00e0 la terre d'Ufer a \u00e9t\u00e9 adopt\u00e9e par l'arm\u00e9e et la marine am\u00e9ricaines, puis par le Code national de l'\u00e9lectricit\u00e9 (NEC), qui l'a reconnue comme une m\u00e9thode de mise \u00e0 la terre acceptable en 1968. Depuis lors, la mise \u00e0 la terre Ufer a \u00e9t\u00e9 largement utilis\u00e9e dans les applications r\u00e9sidentielles, commerciales et industrielles, en particulier dans les zones o\u00f9 la conductivit\u00e9 du sol est faible ou l'activit\u00e9 de la foudre \u00e9lev\u00e9e. La mise \u00e0 la terre Ufer s'est av\u00e9r\u00e9e \u00eatre un moyen fiable et s\u00fbr de prot\u00e9ger les syst\u00e8mes \u00e9lectriques et le personnel contre les chocs \u00e9lectriques, les incendies et les surtensions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi a-t-on invent\u00e9 l'Ufer Grounding ?<\/h2>\n\n\n\n<p>La mise \u00e0 la terre d'Ufer a \u00e9t\u00e9 invent\u00e9e pour r\u00e9soudre un probl\u00e8me auquel l'arm\u00e9e am\u00e9ricaine \u00e9tait confront\u00e9e dans les ann\u00e9es 1940. L'arm\u00e9e devait prot\u00e9ger ses d\u00e9p\u00f4ts de munitions contre la foudre, mais le sol des zones d\u00e9sertiques o\u00f9 se trouvaient les d\u00e9p\u00f4ts \u00e9tait trop sec et trop r\u00e9sistant pour fournir une bonne mise \u00e0 la terre. Ufer a d\u00e9couvert que le b\u00e9ton, utilis\u00e9 pour construire les d\u00e9p\u00f4ts, avait une faible r\u00e9sistance et pouvait servir d'\u00e9lectrode de terre efficace. Il a imagin\u00e9 un moyen de relier les parties m\u00e9talliques du syst\u00e8me \u00e9lectrique aux fondations en b\u00e9ton, cr\u00e9ant ainsi un r\u00e9seau de mise \u00e0 la terre vaste et stable.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quels sont les avantages de la mise \u00e0 la terre d'Ufer ?<\/h2>\n\n\n\n<p>La mise \u00e0 la terre d'Ufer pr\u00e9sente plusieurs avantages par rapport \u00e0 d'autres types de mise \u00e0 la terre, tels que les \u00e9lectrodes \u00e0 tige ou \u00e0 plaque. Voici quelques-uns de ces avantages :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La mise \u00e0 la terre en Ufer est moins co\u00fbteuse et plus facile \u00e0 installer, car elle ne n\u00e9cessite pas de creuser ou de percer des trous dans le sol.<\/li>\n\n\n\n<li>La mise \u00e0 la terre d'Ufer est plus fiable et plus durable car elle est moins affect\u00e9e par la corrosion, l'humidit\u00e9, la temp\u00e9rature ou les conditions du sol.<\/li>\n\n\n\n<li>La mise \u00e0 la terre Ufer offre une r\u00e9sistance plus faible et une capacit\u00e9 de courant de d\u00e9faut plus \u00e9lev\u00e9e, ce qui am\u00e9liore les performances et la s\u00e9curit\u00e9 du syst\u00e8me \u00e9lectrique.<\/li>\n\n\n\n<li>La mise \u00e0 la terre de l'Ufer r\u00e9duit le risque de dommages caus\u00e9s par la foudre, car elle cr\u00e9e un chemin \u00e0 faible imp\u00e9dance pour la d\u00e9charge vers la terre.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">O\u00f9 est utilis\u00e9e la mise \u00e0 la terre d'Ufer ?<\/h2>\n\n\n\n<p>La mise \u00e0 la terre Ufer est largement utilis\u00e9e dans les b\u00e2timents r\u00e9sidentiels, commerciaux et industriels, ainsi que dans les syst\u00e8mes de t\u00e9l\u00e9communication, d'\u00e9lectricit\u00e9 et de transport. La mise \u00e0 la terre d'Ufer est particuli\u00e8rement adapt\u00e9e aux zones aux sols secs, rocheux ou sablonneux, o\u00f9 les m\u00e9thodes de mise \u00e0 la terre conventionnelles sont inefficaces ou peu pratiques. La mise \u00e0 la terre d'Ufer est \u00e9galement recommand\u00e9e par le Code national de l'\u00e9lectricit\u00e9 (NEC) et le Code international du b\u00e2timent (IBC) comme pratique standard pour la mise \u00e0 la terre des syst\u00e8mes \u00e9lectriques.<\/p>\n\n\n\n<p>La mise \u00e0 la terre en Ufer, \u00e9galement appel\u00e9e mise \u00e0 la terre enrob\u00e9e de b\u00e9ton ou mise \u00e0 la terre des fondations, est une m\u00e9thode de mise \u00e0 la terre d'un syst\u00e8me \u00e9lectrique qui consiste \u00e0 connecter un conducteur d'\u00e9lectrode de terre \u00e0 une tige ou \u00e0 un fil d'acier noy\u00e9 dans les fondations en b\u00e9ton d'un b\u00e2timent. Le b\u00e9ton agit comme un \u00e9lectrolyte et fournit un chemin \u00e0 faible r\u00e9sistance pour la dissipation des courants de d\u00e9faut et des surtensions dues \u00e0 la foudre vers la terre.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ufer La mise \u00e0 la terre et le code national de l'\u00e9lectricit\u00e9 250.52<\/h2>\n\n\n\n<p>Selon la norme NEC 250.52(A)(3), une \u00e9lectrode enrob\u00e9e de b\u00e9ton peut \u00eatre utilis\u00e9e comme \u00e9lectrode de mise \u00e0 la terre pour tout syst\u00e8me \u00e9lectrique, si elle r\u00e9pond aux exigences suivantes :<\/p>\n\n\n\n<p>- L'\u00e9lectrode doit \u00eatre constitu\u00e9e d'au moins 6,0 m (20 pi) de barres ou de tiges d'armature en acier conductrices d'\u00e9lectricit\u00e9 d'un diam\u00e8tre d'au moins 13 mm (1\/2 po) ou d'au moins 6,0 m (20 pi) de conducteur en cuivre nu d'un calibre d'au moins 4 AWG.<\/p>\n\n\n\n<p>- L'\u00e9lectrode doit \u00eatre entour\u00e9e d'une couche de b\u00e9ton d'au moins 50 mm, situ\u00e9e horizontalement pr\u00e8s du fond ou verticalement dans la fondation en b\u00e9ton ou la semelle en contact direct avec la terre.<\/p>\n\n\n\n<p>- L'\u00e9lectrode doit \u00eatre reli\u00e9e au conducteur de l'\u00e9lectrode de terre par un dispositif ou une m\u00e9thode approuv\u00e9s, tels qu'une soudure exothermique, une cosse homologu\u00e9e ou un connecteur \u00e0 pression homologu\u00e9.<\/p>\n\n\n\n<p>Si l'\u00e9lectrode enrob\u00e9e de b\u00e9ton ne r\u00e9pond pas \u00e0 ces exigences, elle doit tout de m\u00eame \u00eatre reli\u00e9e au syst\u00e8me de mise \u00e0 la terre et une autre \u00e9lectrode de mise \u00e0 la terre conforme aux exigences doit \u00eatre install\u00e9e, comme une tige de mise \u00e0 la terre conventionnelle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ufer Inspections<\/h2>\n\n\n\n<p>Avant que le b\u00e9ton ne soit coul\u00e9, l'ufer (\u00e9lectrode enrob\u00e9e de b\u00e9ton) doit \u00eatre inspect\u00e9 par un ing\u00e9nieur \u00e9lectricien qualifi\u00e9 ou un inspecteur qualifi\u00e9 afin de v\u00e9rifier qu'il r\u00e9pond aux exigences du Code national de l'\u00e9lectricit\u00e9 (NEC).  Les \u00e9lectriciens qui installent l'ufer ne doivent jamais \u00eatre utilis\u00e9s comme inspecteurs ; de nombreuses autorit\u00e9s refuseront cette inspection.<\/p>\n\n\n\n<p>Supposons que le b\u00e9ton soit d\u00e9j\u00e0 coul\u00e9 et que l'ufer ne soit pas accessible pour \u00eatre inspect\u00e9. Dans ce cas, l'installateur doit fournir des documents prouvant que l'ufer a \u00e9t\u00e9 install\u00e9 conform\u00e9ment au <a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" title=\"NEC\">NEC<\/a>. Il peut s'agir de photos (r\u00e9pondant \u00e0 certaines exigences strictes), de dessins, de factures ou de certificats du fabricant ou du fournisseur du conducteur ou du b\u00e9ton. Les exigences de cette documentation sont normalement telles qu'elle doit \u00eatre pr\u00e9sent\u00e9e au tribunal sous un examen extr\u00eamement minutieux. Il suffit d'imaginer que quelqu'un soit choqu\u00e9 ou \u00e9lectrocut\u00e9 sur la structure pour que la qualit\u00e9 de cette documentation devienne importante. La plupart des \u00e9lectriciens et des constructeurs ne sont pas en mesure de prendre des photos de qualit\u00e9 probante. <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/domaines-de-consultation\/conseil-en-criminalistique\/genie-electrique\/\" title=\"\">ing\u00e9nieur l\u00e9giste<\/a> le simple fait de photographier une dalle est d'un co\u00fbt prohibitif dans la plupart des cas.<\/p>\n\n\n\n<p>Supposons que la documentation ne soit pas disponible ou suffisante. Dans ce cas, l'installateur et l'inspecteur doivent supposer que l'ufer ne r\u00e9pond pas aux exigences du NEC et installer une autre \u00e9lectrode de mise \u00e0 la terre qui y r\u00e9pond, telle qu'une tige de mise \u00e0 la terre conventionnelle. La plupart du temps, il est plus rentable d'installer simplement deux tiges de mise \u00e0 la terre suppl\u00e9mentaires, qui non seulement r\u00e9pondent aux exigences du NEC 250.52 pour la plupart des structures r\u00e9sidentielles, mais r\u00e9pondent \u00e9galement aux exigences d'ajout d'une deuxi\u00e8me tige de mise \u00e0 la terre si la premi\u00e8re tige ne r\u00e9pond pas \u00e0 l'exigence de 25 ohms par rapport \u00e0 la terre \u00e9loign\u00e9e.<\/p>\n\n\n<div class=\"inner-container\"><div class=\"image-box-header\"><img decoding=\"async\" class=\"gutenverse-image-box-filled\" src=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2024\/02\/PXL_20211111_180056050.jpg\" height=\"3024\" width=\"4032\" alt=\"\" \/><\/div><div class=\"image-box-body\"><div class=\"body-inner\"><h3 class=\"body-title icon-position-before\"><span>Test de chute de potentiel sur la connexion Ufer d'une dalle en b\u00e9ton<\/span><\/h3><p class=\"body-description\">Ce test mesure la qualit\u00e9 du contact \u00e9lectrique entre le syst\u00e8me de mise \u00e0 la terre \u00e9lectrique, \u00e0 travers la dalle de b\u00e9ton et jusqu'\u00e0 la terre \u00e9loign\u00e9e en utilisant la m\u00e9thode de la chute de potentiel. Ici, le test indique 3,77 ohms vers la terre \u00e9loign\u00e9e.<\/p><a class=\"guten-button guten-button-sm\" href=\"#\"><span><\/span><\/a><\/div><\/div><\/div>\n\n\n<p>Un autre aspect important des inspections d'ufer consiste \u00e0 s'assurer que la dalle est continue et li\u00e9e \u00e9lectriquement. Cela signifie qu'il n'y a pas de ruptures ou de lacunes dans le b\u00e9ton qui pourraient interrompre le flux d'\u00e9lectricit\u00e9 \u00e0 travers l'ufer. Une dalle discontinue peut r\u00e9duire l'efficacit\u00e9 du syst\u00e8me d'alimentation \u00e9lectrique. <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2022\/03\/30\/5-faits-interessants-sur-la-mise-a-la-terre-de-lufer\/\">ufer comme mise \u00e0 la terre<\/a> et augmentent le risque de potentiels de pas \u00e0 l'int\u00e9rieur de la maison. Les potentiels de pas sont des diff\u00e9rences de tension entre deux points du sol qui peuvent provoquer des chocs \u00e9lectriques pour les adultes, les enfants ou les animaux qui marchent dessus.<\/p>\n\n\n<div class=\"inner-container\"><div class=\"image-box-header\"><img decoding=\"async\" class=\"gutenverse-image-box-filled\" src=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/wp-content\/uploads\/2024\/02\/PXL_20211111_180540568-rotated.jpg\" height=\"3024\" width=\"4032\" alt=\"\" \/><\/div><div class=\"image-box-body\"><div class=\"body-inner\"><h3 class=\"body-title icon-position-before\"><span>Test de continuit\u00e9 de la dalle Ufer<\/span><\/h3><p class=\"body-description\">Ce test mesure l'intensit\u00e9 d'un signal passant au-dessus d'une grande dalle commerciale.  La profondeur d'une structure m\u00e9tallique est mesur\u00e9e \u00e0 l'int\u00e9rieur de la dalle \u00e0 un endroit pr\u00e9cis.<\/p><a class=\"guten-button guten-button-sm\" href=\"#\"><span><\/span><\/a><\/div><\/div><\/div>\n\n\n<p>Pour v\u00e9rifier la continuit\u00e9 de la dalle, Dreiym Engineering peut effectuer un test de tonalit\u00e9 \u00e0 l'aide d'un g\u00e9n\u00e9rateur de tonalit\u00e9 et d'une sonde. Le g\u00e9n\u00e9rateur de tonalit\u00e9 envoie un signal \u00e0 travers l'ufer, et la sonde le d\u00e9tecte \u00e0 l'autre extr\u00e9mit\u00e9 et dans toute la dalle. Si le signal est clair et coh\u00e9rent, cela signifie que la dalle est continue et bien li\u00e9e. Si le signal est faible ou intermittent, cela signifie qu'il y a des ruptures ou des lacunes dans la dalle qui doivent \u00eatre r\u00e9par\u00e9es ou pont\u00e9es avec du fil de cuivre. Dreiym Engineering peut \u00e9galement identifier l'emplacement des ruptures ou des lacunes et proposer des solutions pour y rem\u00e9dier.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Comment compl\u00e9ter un Ufer Ground qui n'est pas conforme \u00e0 la norme NEC 250.52 ?<\/h2>\n\n\n\n<p>Si vous ne disposez pas de la documentation ou des inspections prouvant que l'ufer r\u00e9pond aux exigences du NEC, vous devez installer un autre type d'\u00e9lectrode de mise \u00e0 la terre qui y r\u00e9pond. L'une des options les plus courantes et les plus \u00e9conomiques consiste \u00e0 installer une tige de mise \u00e0 la terre. Un piquet de terre est une tige m\u00e9tallique enfonc\u00e9e dans le sol \u00e0 une profondeur d'au moins 1,5 m. Le piquet doit \u00eatre en cuivre ou en acier inoxydable. La tige doit \u00eatre en cuivre ou en fer galvanis\u00e9 et doit avoir un diam\u00e8tre minimum de 5\/8 de pouce pour le cuivre ou de 3\/4 de pouce pour le fer galvanis\u00e9. La tige doit \u00eatre connect\u00e9e au conducteur de l'\u00e9lectrode de terre \u00e0 l'aide d'une pince ou d'un connecteur agr\u00e9\u00e9. La connexion doit \u00eatre accessible \u00e0 des fins d'inspection.<\/p>\n\n\n\n<p>Selon le NEC, une simple tige de mise \u00e0 la terre est acceptable comme \u00e9lectrode de mise \u00e0 la terre si elle a une r\u00e9sistance \u00e0 la terre \u00e9loign\u00e9e de 25 ohms ou moins. Toutefois, cette r\u00e9sistance peut varier en fonction des conditions du sol et du niveau d'humidit\u00e9. Il est donc recommand\u00e9 de mesurer la r\u00e9sistance de la tige de terre \u00e0 l'aide d'un appareil appel\u00e9 testeur de r\u00e9sistance de terre. Le testeur applique une tension et un courant connus \u00e0 la tige de terre et mesure la chute de tension qui en r\u00e9sulte.<\/p>\n\n\n\n<p>Si la r\u00e9sistance du piquet de terre est sup\u00e9rieure \u00e0 25 ohms, vous devez installer un deuxi\u00e8me piquet de terre \u00e0 une distance d'au moins 6 pieds du premier, et les connecter en parall\u00e8le avec le conducteur de l'\u00e9lectrode de mise \u00e0 la terre. Le NEC n'exige pas que vous mesuriez la r\u00e9sistance de la deuxi\u00e8me tige de mise \u00e0 la terre, pour autant que vous l'installiez conform\u00e9ment aux sp\u00e9cifications du code. Toutefois, il est bon de v\u00e9rifier que la r\u00e9sistance des tiges de terre combin\u00e9es est inf\u00e9rieure \u00e0 la r\u00e9sistance de la tige de terre unique.<\/p>\n\n\n\n<p>Dreiym Engineering peut vous aider \u00e0 tester les tiges de terre pour votre projet. Nous disposons de l'\u00e9quipement et de l'expertise n\u00e9cessaires pour effectuer des mesures pr\u00e9cises et fiables de la r\u00e9sistance de la terre. Nous pouvons \u00e9galement vous conseiller sur l'emplacement et l'espacement optimaux des piquets de terre et veiller \u00e0 ce qu'ils soient correctement raccord\u00e9s au syst\u00e8me de mise \u00e0 la terre. Nous pouvons vous fournir un rapport qui documente les r\u00e9sultats de nos tests et la conformit\u00e9 de vos piquets de terre avec les normes NEC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi choisir Dreiym Engineering pour les inspections Ufer ?<\/h2>\n\n\n\n<p>Les inspections d'Ufer sont essentielles pour garantir la s\u00e9curit\u00e9 et la fiabilit\u00e9 de votre syst\u00e8me \u00e9lectrique. Un ufer qui ne r\u00e9pond pas aux normes NEC peut compromettre la mise \u00e0 la terre de votre syst\u00e8me, ce qui peut entra\u00eener des risques \u00e9lectriques, des dommages \u00e0 l'\u00e9quipement ou des coupures de courant. C'est pourquoi vous avez besoin d'un partenaire de confiance comme Dreiym Engineering pour r\u00e9aliser les inspections ufer de votre projet.<\/p>\n\n\n\n<p>Dreiym Engineering dispose de l'expertise et de l'exp\u00e9rience n\u00e9cessaires pour effectuer des inspections avant ou apr\u00e8s la coul\u00e9e du b\u00e9ton. Nous avons effectu\u00e9 des centaines d'inspections sur des syst\u00e8mes de mise \u00e0 la terre. Nous disposons d'ing\u00e9nieurs et d'inspecteurs en \u00e9lectricit\u00e9 qualifi\u00e9s qui connaissent les exigences du NEC et les meilleures pratiques en mati\u00e8re d'installation d'ufer. Nous pouvons v\u00e9rifier que votre ufer r\u00e9pond aux sp\u00e9cifications en mati\u00e8re de taille, de longueur, d'emplacement, d'enrobage et de connexion au conducteur de l'\u00e9lectrode de terre. Nous pouvons \u00e9galement fournir des documents \u00e0 l'appui de nos conclusions et de nos recommandations.<\/p>\n\n\n\n<p>Si votre b\u00e9ton est d\u00e9j\u00e0 coul\u00e9 et que votre ufer n'est pas accessible pour inspection, nous pouvons vous aider \u00e0 obtenir ou \u00e0 pr\u00e9parer la documentation n\u00e9cessaire pour prouver que votre ufer a \u00e9t\u00e9 install\u00e9 conform\u00e9ment au NEC. Nous pouvons examiner vos photos, dessins, factures ou certificats et nous assurer qu'ils r\u00e9pondent aux crit\u00e8res stricts d'acceptation.  Nous pouvons \u00e9galement tester la r\u00e9sistance et la continuit\u00e9 de votre syst\u00e8me de mise \u00e0 la terre et vous fournir un rapport de nos r\u00e9sultats.<\/p>\n\n\n\n<p>Chez Dreiym Engineering, nous nous soucions de votre s\u00e9curit\u00e9 et de votre satisfaction. Nous vous proposons des inspections ufer \u00e0 des prix comp\u00e9titifs et \u00e0 des horaires flexibles. Nous travaillons avec des entrepreneurs, des propri\u00e9taires, des architectes, et des <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/2022\/09\/08\/levolution-des-pratiques-en-matiere-dingenierie-electrique\/\">des ing\u00e9nieurs pour s'assurer que votre installation \u00e9lectrique<\/a> est correctement mis \u00e0 la terre et est conforme au NEC. <a href=\"https:\/\/vm6fr4whzn6.c.updraftclone.com\/fr_fr\/contact\/\" title=\"\">Contactez nous<\/a> d\u00e8s aujourd'hui pour planifier votre inspection ufer ou pour en savoir plus sur nos services.<\/p>\n\n\n\n<p>Consultez toujours votre installateur \u00e9lectrique agr\u00e9\u00e9\/professionnel de la conception pour vous assurer que toutes les exigences du NEC et des autres codes applicables sont respect\u00e9es.<\/p>","protected":false},"excerpt":{"rendered":"<p>What is Ufer Grounding? Ufer grounding is a technique of grounding electrical systems by connecting them to a concrete-encased electrode. The term Ufer comes from the name of Herbert G. Ufer, an engineer who developed this method during World War II. Ufer grounding is also known as concrete-encased grounding or foundation grounding. Ufer grounding was [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":4396,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_mbp_gutenberg_autopost":false,"_pgmb_is_evergreen":true,"_pgmb_ap_template_id":0,"iawp_total_views":1304,"footnotes":""},"categories":[4,7],"tags":[],"class_list":["post-4395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical","category-engineering"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.6.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"Uncover the requirements for Ufer Grounding according to the National Electrical Code 250.52, including proper installation and bonding procedures.\" \/>\n\t<meta name=\"robots\" content=\"noindex, nofollow, max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Angela Jones\"\/>\n\t<link rel=\"canonical\" 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