{"id":2979,"date":"2025-02-24T09:04:58","date_gmt":"2025-02-24T08:04:58","guid":{"rendered":"https:\/\/www.bravecroc.de\/nur-fuer-fachpersonal\/"},"modified":"2025-02-24T20:08:35","modified_gmt":"2025-02-24T19:08:35","slug":"nur-fuer-fachpersonal","status":"publish","type":"post","link":"https:\/\/www.bravecroc.de\/en\/nur-fuer-fachpersonal\/","title":{"rendered":"For qualified staff only (Update)"},"content":{"rendered":"[vc_row type=&#8221;full_width_background&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; bg_color=&#8221;#b52827&#8243; scene_position=&#8221;center&#8221; text_color=&#8221;custom&#8221; custom_text_color=&#8221;#ffffff&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; zindex=&#8221;99999&#8243; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; 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text_direction=&#8221;default&#8221;]2025-02-24[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row type=&#8221;full_width_background&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; top_padding=&#8221;2%&#8221; bottom_padding=&#8221;2%&#8221; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; enable_shape_divider=&#8221;true&#8221; shape_divider_color=&#8221;#b52827&#8243; shape_divider_position=&#8221;top&#8221; shape_divider_height=&#8221;60&#8243; shape_divider_bring_to_front=&#8221;true&#8221; bg_image_animation=&#8221;none&#8221; shape_type=&#8221;curve_asym_2&#8243;][vc_column column_padding=&#8221;no-extra-padding&#8221; 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column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;left&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/3&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; top_padding=&#8221;1%&#8221; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;2\/3&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<p class=\"bodytext\">For some time now, the symbols &#8220;Installation, electrotechnical expertise&#8221; and &#8220;Installation, mechanical expertise&#8221; have increasingly been seen on electrical installation products, for example. These symbols are intended to indicate that specialist knowledge is required to install these products.<\/p>\n[\/vc_column_text][vc_row_inner column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; text_align=&#8221;left&#8221; row_position=&#8221;default&#8221; row_position_tablet=&#8221;inherit&#8221; row_position_phone=&#8221;inherit&#8221; overflow=&#8221;visible&#8221; pointer_events=&#8221;all&#8221;][vc_column_inner column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; centered_text=&#8221;true&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; overflow=&#8221;visible&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/2&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][image_with_animation image_url=&#8221;2400&#8243; image_size=&#8221;full&#8221; animation_type=&#8221;entrance&#8221; animation=&#8221;Fade In&#8221; animation_easing=&#8221;default&#8221; animation_movement_type=&#8221;transform_y&#8221; hover_animation=&#8221;none&#8221; alignment=&#8221;center&#8221; border_radius=&#8221;none&#8221; box_shadow=&#8221;none&#8221; image_loading=&#8221;default&#8221; max_width=&#8221;75%&#8221; max_width_mobile=&#8221;default&#8221;][vc_column_text]\n<p class=\"align-center\">IEC 60417-6182<br \/>\nInstallation, electrotechnical expertise<\/p>\n[\/vc_column_text][\/vc_column_inner][vc_column_inner column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; centered_text=&#8221;true&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; overflow=&#8221;visible&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/2&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][image_with_animation image_url=&#8221;2408&#8243; image_size=&#8221;full&#8221; animation_type=&#8221;entrance&#8221; animation=&#8221;Fade In&#8221; animation_easing=&#8221;default&#8221; animation_movement_type=&#8221;transform_y&#8221; hover_animation=&#8221;none&#8221; alignment=&#8221;center&#8221; border_radius=&#8221;none&#8221; box_shadow=&#8221;none&#8221; image_loading=&#8221;default&#8221; max_width=&#8221;75%&#8221; max_width_mobile=&#8221;default&#8221;][vc_column_text]\n<p class=\"align-center\">IEC 60417-6183:<br \/>\nInstallation, mechanical expertise<\/p>\n[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_column_text]Manufacturers would do well to refer to the necessary expertise during installation on the packaging, as they have little control over who actually installs the products in times of &#8220;do it yourself&#8221;.<\/p>\n<p>Such symbols of the new generation are a good opportunity to have a look at the symbol statement and the design guidelines applied.[\/vc_column_text]<div class=\"nectar-fancy-ul\" data-list-icon=\"fa fa-stop\" data-animation=\"false\" data-animation-delay=\"0\" data-color=\"extra-color-2\" data-spacing=\"default\" data-alignment=\"left\"> \n<h5>Analysis<\/h5>\n<p>Because the two symbols were included in IEC 60417 &#8220;Graphical symbols for equipment&#8221;, the design principles of ISO\/IEC 80416 must also be applied. Positioning the symbols on the basic figure (IEC 80416-1) results in the following picture:<\/p>\n<ul>\n<li>Grid of the basic figure<br \/>\nThe octagon results from the two basic squares.<br \/>\nDesign principle applied.<\/li>\n<li>Line widths 2 mm<br \/>\nThe octagon is a polyline with a corresponding line width.<br \/>\nDesign principle applied.<\/li>\n<li>Distances<br \/>\nMinimum distance between two parallel lines 3 mm<br \/>\nDesign principle not applicable, as there are no parallel lines<\/li>\n<li>Filled areas<br \/>\n&#8230; should be avoided&#8230;<br \/>\nDesign principle not observed, but because the symbols are used rather as safety signs, it is worth having a look at ISO 3864-3 &#8220;Design principles for graphic symbols for use in safety signs&#8221;, where surfaces are recommended to improve the recognizability.<\/li>\n<\/ul>\n <\/div>[image_with_animation image_url=&#8221;1124&#8243; image_size=&#8221;full&#8221; animation_type=&#8221;entrance&#8221; animation=&#8221;Fade In&#8221; animation_easing=&#8221;default&#8221; animation_movement_type=&#8221;transform_y&#8221; hover_animation=&#8221;none&#8221; alignment=&#8221;&#8221; img_link_large=&#8221;yes&#8221; border_radius=&#8221;none&#8221; box_shadow=&#8221;none&#8221; image_loading=&#8221;default&#8221; max_width=&#8221;100%&#8221; max_width_mobile=&#8221;default&#8221;]<div class=\"nectar-fancy-ul\" data-list-icon=\"fa fa-stop\" data-animation=\"false\" data-animation-delay=\"0\" data-color=\"extra-color-2\" data-spacing=\"default\" data-alignment=\"left\"> The symbols were combined from several IEC 60417 symbols:<\/p>\n<ul>\n<li>Symbol element: Octagon<br \/>\nStandardized: based on IEC 60417-3308 with text STOP<br \/>\nMeaning: Stop operation<br \/>\nMeaning in the symbols: Stop<\/li>\n<li>Symbol element: Person<br \/>\nStandardized: IEC 60417-5391<br \/>\nMeaning according to standard: Patient, obese<br \/>\nMeaning in the symbols: Staff<\/li>\n<li>Symbol element: Construction helmet<br \/>\nStandardized: ISO 7010-M014<br \/>\nMeaning according to standard: Wear a safety helmet<br \/>\nMeaning in the symbols: commercial \/ technical<\/li>\n<li>Symbol element: Electric lightning<br \/>\nStandardized: IEC 60417-2302<br \/>\nMeaning according to the standard: electrical energy<br \/>\nMeaning in the symbols: Electrical<\/li>\n<li>Symbol element: Open-end wrench<br \/>\nStandardized: IEC 60417-0717<br \/>\nMeaning according to standard: Call for maintenance<br \/>\nMeaning in the symbols: Mechanics<\/li>\n<\/ul>\n<p>If you put together the meaning of the individual symbol elements, you get the symbol statement:<\/p>\n<p><strong>&#8220;Stop, for mechanical or electrical specialists.&#8221;<\/strong><\/p>\n<p>This does not correspond to the desired interpretation. Of course, symbols and their meaning have to be learned. We do this, consciously or unconsciously all our lives. And that is exactly the point. We always encounter an octagon in everyday life as a STOP sign in road traffic. <\/div>[vc_column_text]\n<h5>Alternative<\/h5>\n<p>So what could be the solution? We change the base symbol from a stop shape to a mandatory shape, the circle according to ISO 3864-1. If we put the meaning of the individual symbol elements together again, we now come to the symbol statement:<\/p>\n<p>&#8220;Only, for mechanical or electrical specialists.&#8221;<\/p>\n<p>Due to the uniqueness of the basic circle shape for mandatory signs, the symbol also works in black and white, if necessary. On this occasion you could adapt the person, the helmet and the electric flash to the symbols according to ISO 3864 and you will get a working mandatory sign.[\/vc_column_text][divider line_type=&#8221;No Line&#8221; custom_height=&#8221;20&#8243;][image_with_animation image_url=&#8221;2724&#8243; image_size=&#8221;full&#8221; animation_type=&#8221;entrance&#8221; animation=&#8221;Fade In&#8221; animation_easing=&#8221;default&#8221; animation_movement_type=&#8221;transform_y&#8221; hover_animation=&#8221;none&#8221; alignment=&#8221;&#8221; border_radius=&#8221;none&#8221; box_shadow=&#8221;none&#8221; image_loading=&#8221;default&#8221; max_width=&#8221;100%&#8221; max_width_mobile=&#8221;default&#8221;][vc_row_inner column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; text_align=&#8221;left&#8221; row_position=&#8221;default&#8221; row_position_tablet=&#8221;inherit&#8221; row_position_phone=&#8221;inherit&#8221; overflow=&#8221;visible&#8221; pointer_events=&#8221;all&#8221;][vc_column_inner column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; overflow=&#8221;visible&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/2&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text]\n<h5>Conclusion<\/h5>\n<p>The paradox is that these symbols, despite their supposed lack, can function well. For the laws of perception (everyday experience, interpretation, obviousness, association) very probably do indicate that the &#8220;stop octagon&#8221; refers to the viewer and not to the other symbolic content.<\/p>\n<p>The considerations here are not intended to question standardized symbols in principle. The considerations are rather meant to motivate a structured way of working when developing your own symbols, in which I will <a href=\"mailto:info@bravecroc.com\">gladly support you<\/a>.[\/vc_column_text][\/vc_column_inner][vc_column_inner column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; overflow=&#8221;visible&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/2&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][nectar_image_comparison image_url=&#8221;2400&#8243; image_2_url=&#8221;2406&#8243;][\/vc_column_inner][\/vc_row_inner][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<h5>Symbols for download<\/h5>\n<p>ISO 60417:6182 and 6183 and Redesign according to ISO 3864<\/p>\n<p class=\"bodytext\"><a class=\"download\" href=\"https:\/\/www.bravecroc.de\/wp-content\/uploads\/2025\/02\/Installation-expertise-CLS-CDSS.zip\"> Symbole &#8220;Installation, expertise&#8221; als CSL<\/a><br \/>\nCorel symbol library for Draw and DESIGNER from version 24 on and<br \/>\nCorel Stylesheet CDSS for efficiently changing object properties.<br \/>\nIf you are working with a current version of Corel,<br \/>\nthen first open the CSL and save it in the Corel version you are using.<\/p>\n<p><a class=\"download\" href=\"https:\/\/www.bravecroc.de\/wp-content\/uploads\/2025\/02\/Installation-expertise.pdf\" target=\"_blank\" rel=\"noopener\"> Symbole &#8220;Installation, expertise&#8221; as PDF<\/a><br \/>\n<a class=\"download\" href=\"https:\/\/www.bravecroc.de\/wp-content\/uploads\/2025\/02\/Installation-expertise-PNG.zip\"> Symbole &#8220;Installation, expertise&#8221; as PNG<\/a><br \/>\n<a class=\"download\" href=\"https:\/\/www.bravecroc.de\/wp-content\/uploads\/2025\/02\/Installation-expertise-SVG.zip\"> Symbole &#8220;Installation, expertise&#8221; as SVG<\/a><\/p>\n<p class=\"bodytext\"><a class=\"internal-link\" href=\"https:\/\/www.bravecroc.de\/en\/lizenz\/\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.bravecroc.de\/wp-content\/uploads\/2020\/05\/ICO_CC0_16x16.png\" alt=\"\" width=\"33\" height=\"16\" \/> The downloads are not subject to copyright protection.<\/a><\/p>\n[\/vc_column_text][nectar_cta btn_style=&#8221;see-through&#8221; heading_tag=&#8221;h6&#8243; button_color=&#8221;default&#8221; text_color=&#8221;#b52827&#8243; button_border_thickness=&#8221;0px&#8221; link_type=&#8221;regular&#8221; alignment=&#8221;left&#8221; alignment_tablet=&#8221;default&#8221; alignment_phone=&#8221;default&#8221; display=&#8221;block&#8221; display_tablet=&#8221;inherit&#8221; display_phone=&#8221;inherit&#8221; link_text=&#8221;Working with symbol libraries in Corel &#8230;&#8221; url=&#8221;https:\/\/www.bravecroc.de\/en\/technische-illustrationen-mit-werkzeugen-von-corel&#8221; margin_top=&#8221;20&#8243;][\/vc_column][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/3&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_widget_sidebar enable_sticky=&#8221;true&#8221; sidebar_id=&#8221;blog-sidebar&#8221;][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"<p>For some time now, the symbols &#8220;Installation, electrotechnical expertise&#8221; and &#8220;Installation, mechanical expertise&#8221; have increasingly been seen on electrical installation products, for example. These symbols are intended to indicate that specialist knowledge is required to install these products.<\/p>\n","protected":false},"author":3,"featured_media":2405,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2979","post","type-post","status-publish","format-standard","has-post-thumbnail","category-topics"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>For qualified staff only (Update) - www.bravecroc.de<\/title>\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.bravecroc.de\/en\/nur-fuer-fachpersonal\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"For qualified staff only (Update) - www.bravecroc.de\" \/>\n<meta property=\"og:description\" content=\"For some time now, the symbols &quot;Installation, electrotechnical expertise&quot; and &quot;Installation, mechanical expertise&quot; have increasingly been seen on electrical installation products, for example. These symbols are intended to indicate that specialist knowledge is required to install these products.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bravecroc.de\/en\/nur-fuer-fachpersonal\/\" \/>\n<meta property=\"og:site_name\" content=\"www.bravecroc.de\" \/>\n<meta property=\"article:published_time\" content=\"2025-02-24T08:04:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-02-24T19:08:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bravecroc.de\/wp-content\/uploads\/2020\/09\/nur-fuer-fachpersonal_Beitrag.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"318\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Marco J\u00e4nicke\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Marco J\u00e4nicke\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/nur-fuer-fachpersonal\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/nur-fuer-fachpersonal\\\/\"},\"author\":{\"name\":\"Marco J\u00e4nicke\",\"@id\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/#\\\/schema\\\/person\\\/58a206aad87bb0944d2ea9d27cf73f99\"},\"headline\":\"For qualified staff only (Update)\",\"datePublished\":\"2025-02-24T08:04:58+00:00\",\"dateModified\":\"2025-02-24T19:08:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/nur-fuer-fachpersonal\\\/\"},\"wordCount\":2548,\"image\":{\"@id\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/nur-fuer-fachpersonal\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.bravecroc.de\\\/wp-content\\\/uploads\\\/2020\\\/09\\\/nur-fuer-fachpersonal_Beitrag.jpg\",\"articleSection\":[\"Topics\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/nur-fuer-fachpersonal\\\/\",\"url\":\"https:\\\/\\\/www.bravecroc.de\\\/en\\\/nur-fuer-fachpersonal\\\/\",\"name\":\"For qualified staff only (Update) - 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