{"id":6657,"date":"2023-05-18T14:35:51","date_gmt":"2023-05-18T06:35:51","guid":{"rendered":"https:\/\/www.tosunlux.eu\/?p=6657"},"modified":"2023-05-18T14:36:25","modified_gmt":"2023-05-18T06:36:25","slug":"understanding-electrical-circuit-overloads-and-how-to-prevent-them","status":"publish","type":"post","link":"https:\/\/www.tosunlux.eu\/pt\/blog\/understanding-electrical-circuit-overloads-and-how-to-prevent-them\/","title":{"rendered":"Qual \u00e9 o efeito da sobrecarga no circuito?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_63 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\" >\u00cdndice<\/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=\"Alternar \u00edndice de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/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 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/understanding-electrical-circuit-overloads-and-how-to-prevent-them\/#What_Is_an_Overload_in_an_Electrical_Circuit\" title=\"O que \u00e9 uma sobrecarga em um circuito el\u00e9trico?\">O que \u00e9 uma sobrecarga em um circuito el\u00e9trico?<\/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.tosunlux.eu\/pt\/blog\/understanding-electrical-circuit-overloads-and-how-to-prevent-them\/#What_Causes_Electrical_Circuit_Overloads\" title=\"O que causa sobrecargas no circuito el\u00e9trico?\">O que causa sobrecargas no circuito el\u00e9trico?<\/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.tosunlux.eu\/pt\/blog\/understanding-electrical-circuit-overloads-and-how-to-prevent-them\/#Overloaded_Circuit_Symptoms\" title=\"Sintomas de circuito sobrecarregado\">Sintomas de circuito sobrecarregado<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/understanding-electrical-circuit-overloads-and-how-to-prevent-them\/#Circuit_Mapping_in_Your_Home\" title=\"Mapeamento de circuitos em sua casa\">Mapeamento de circuitos em sua casa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.tosunlux.eu\/pt\/blog\/understanding-electrical-circuit-overloads-and-how-to-prevent-them\/#Circuit_Load_Calculation\" title=\"C\u00e1lculo da Carga do Circuito\">C\u00e1lculo da Carga do Circuito<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Voc\u00ea gerou uma sobrecarga no circuito el\u00e9trico se alguma vez ligou muitas luzes natalinas, ligou um aspirador ou ligou um aquecedor de ambiente apenas para que as luzes ou o aparelho desligassem abruptamente. A t\u00e9cnica mais segura \u00e9 limitar seu uso el\u00e9trico em primeiro lugar para evitar sobrecargas.<\/p>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_an_Overload_in_an_Electrical_Circuit\"><\/span><strong>O que \u00e9 uma sobrecarga em um circuito el\u00e9trico?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Quando voc\u00ea consome mais eletricidade do que um circuito pode suportar com seguran\u00e7a, h\u00e1 uma sobrecarga no circuito el\u00e9trico.<\/p>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Causes_Electrical_Circuit_Overloads\"><\/span><strong>O que causa sobrecargas no circuito el\u00e9trico?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Os circuitos el\u00e9tricos s\u00f3 s\u00e3o capazes de lidar com uma certa quantidade de corrente. Fia\u00e7\u00e3o, um disjuntor e dispositivos comp\u00f5em um circuito. A carga total no circuito \u00e9 determinada pela quantidade de energia usada por cada gadget quando \u00e9 ligado. Quando a carga nominal da fia\u00e7\u00e3o do circuito \u00e9 excedida, o disjuntor desarma, cortando a energia de todo o circuito.<\/p>\n\n\n\n<p>Se o circuito n\u00e3o tivesse um disjuntor, uma sobrecarga faria com que a fia\u00e7\u00e3o do circuito superaquecesse, derretendo o isolamento do fio e causando um inc\u00eandio. Como circuitos diferentes t\u00eam classifica\u00e7\u00f5es de carga variadas, alguns podem fornecer mais eletricidade do que outros.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-684x1024.jpg\" alt=\"\" class=\"wp-image-5679\" width=\"362\" height=\"541\" srcset=\"https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-684x1024.jpg 684w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-200x300.jpg 200w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-768x1150.jpg 768w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-1025x1536.jpg 1025w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-1367x2048.jpg 1367w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-8x12.jpg 8w, https:\/\/www.tosunlux.eu\/wp-content\/uploads\/2022\/04\/DSC_5149-scaled.jpg 1709w\" sizes=\"(max-width: 362px) 100vw, 362px\" \/><figcaption><a href=\"https:\/\/www.tosunlux.eu\/pt\" target=\"_blank\" rel=\"noreferrer noopener\">tosunlux<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"Overloaded_Circuit_Symptoms\"><\/span><strong>Sintomas de circuito sobrecarregado<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Um disjuntor desarmando e cortando toda a energia \u00e9 o indicador mais evidente de uma sobrecarga no circuito el\u00e9trico. Outros sinais podem ser menos \u00f3bvios:<\/p>\n\n\n\n<p>\u2022 Diminua as luzes, principalmente se elas diminu\u00edrem quando voc\u00ea usar eletrodom\u00e9sticos ou acender luzes extras.<\/p>\n\n\n\n<p>\u2022 Tomadas ou interruptores que fazem barulho.<\/p>\n\n\n\n<p>\u2022 Superf\u00edcies quentes ao toque, como tampas de tomadas ou interruptores.<\/p>\n\n\n\n<p>\u2022 Odores de queimado vindos de interruptores ou tomadas.<\/p>\n\n\n\n<p>\u2022 Plugues e tomadas queimadas<\/p>\n\n\n\n<p>\u2022 Ferramentas el\u00e9tricas, eletrodom\u00e9sticos ou dispositivos que parecem n\u00e3o ter energia suficiente.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-embed-handler wp-block-embed-embed-handler wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Circuitos el\u00e9tricos sobrecarregados - Solu\u00e7\u00e3o de problemas\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/WXerJekAJEs?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"Circuit_Mapping_in_Your_Home\"><\/span><strong>Mapeamento de circuitos em sua casa<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Aprender quais circuitos alimentam quais dispositivos \u00e9 o primeiro passo para prevenir a sobrecarga do circuito el\u00e9trico. Depois de definir o layout b\u00e1sico do circuito, voc\u00ea pode calcular a classifica\u00e7\u00e3o de carga segura de cada circuito para ver quantos objetos voc\u00ea pode conectar a ele. Se as luzes da sua cozinha se apagam quando voc\u00ea liga a torradeira (equipamento que consome muita energia) e se a capacidade do circuito est\u00e1 chegando ao limite. O mapeamento dos circuitos tamb\u00e9m pode revelar se novos circuitos s\u00e3o necess\u00e1rios para atender \u00e0s demandas habituais da casa.<\/p>\n\n\n\n<p>O mapeamento do circuito \u00e9 direto (se tedioso):<\/p>\n\n\n\n<ol class=\"wp-block-list\" type=\"1\"><li>Leve um bloco de notas e um l\u00e1pis com voc\u00ea.<\/li><li>Desligue um dos disjuntores com o n\u00famero 15 ou 20 estampado na extremidade da chave do disjuntor, abrindo a porta do painel de servi\u00e7o de sua casa (caixa do disjuntor).<\/li><li>Anote onde o circuito est\u00e1 no painel do bloco para que voc\u00ea possa encontr\u00e1-lo mais tarde.<\/li><\/ol>\n\n\n\n<p>Depois disso, fa\u00e7a um tour pela casa e teste todas as luzes, ventiladores de teto e aparelhos plug-in. Fa\u00e7a uma lista de tudo o que n\u00e3o tem energia, bem como a sala em que est\u00e1. Al\u00e9m disso, experimente cada tomada com um testador de voltagem ou recept\u00e1culo, ou mesmo uma luz ou l\u00e2mpada plug-in, e anote aquelas que n\u00e3o n\u00e3o funciona. Voc\u00ea n\u00e3o precisa percorrer toda a casa para encontrar cada circuito. Se o seu eletricista for minucioso, pode haver etiquetas pr\u00f3ximas aos disjuntores indicando as se\u00e7\u00f5es do circuito.<\/p>\n\n\n\n<h2 class=\"has-medium-font-size wp-block-heading\"><span class=\"ez-toc-section\" id=\"Circuit_Load_Calculation\"><\/span><strong>C\u00e1lculo da Carga do Circuito<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Seu mapa de circuito mostrar\u00e1 quais circuitos alimentam quais dispositivos. Agora voc\u00ea deve descobrir quanta energia os dispositivos consomem. Voc\u00ea precisar\u00e1 de uma educa\u00e7\u00e3o r\u00e1pida em energia el\u00e9trica para fazer isso. Watts s\u00e3o as unidades de medida de eletricidade; uma l\u00e2mpada de 100 watts consome 100 watts. O produto da tens\u00e3o (volts) e amperagem (amp\u00e8res) \u00e9 igual a um watt:<\/p>\n\n\n\n<p>1 watt \u00e9 igual a 1 volt x 1 amp\u00e8re<\/p>\n\n\n\n<p>Adicione a pot\u00eancia de todos os dispositivos em cada circuito para obter a carga total desse circuito. A pot\u00eancia das l\u00e2mpadas e muitos pequenos gadgets \u00e9 rotulada. Para calcular os watts de um dispositivo que fornece apenas amplificadores, multiplique o valor do amplificador por 120 (a tens\u00e3o dos circuitos t\u00edpicos). Inclua quaisquer dispositivos permanentemente conectados ao circuito e quaisquer aparelhos plug-in que n\u00e3o sejam usados com frequ\u00eancia.<\/p>\n\n\n\n<p>Compare a pot\u00eancia total de cada circuito com a classifica\u00e7\u00e3o de carga desse circuito. Quinze amperes s\u00e3o classificados para circuitos com disjuntores \u201c15\u201d. Um desses circuitos tem uma classifica\u00e7\u00e3o de carga m\u00e1xima de 1.800 watts:<\/p>\n\n\n\n<p>1.800 watts = 120 volts x 15 amperes<\/p>\n\n\n\n<p>Voc\u00ea sobrecarregar\u00e1 o circuito se usar mais de 1.800 watts e o disjuntor desarmar\u00e1.<\/p>\n\n\n\n<p>Circuitos com disjuntores \u201c20\u201d s\u00e3o classificados para 20 amperes e podem lidar com uma carga m\u00e1xima de 2.400 watts:<\/p>\n\n\n\n<p>2.400 watts = 120 volts x 20 amperes<\/p>\n\n\n\n<p>Para cada circuito, compare a pot\u00eancia geral (quanta eletricidade voc\u00ea est\u00e1 consumindo) com a classifica\u00e7\u00e3o de carga. Um circuito de 15 amp\u00e8res atendendo luzes e tomadas em uma sala, por exemplo, pode fornecer 500 watts para ilumina\u00e7\u00e3o, 500 watts para TV e decodificador e 200 watts para sistema de som, totalizando 1.200 watts. Se voc\u00ea conectar um aspirador de 700 watts quando a TV, o aparelho de som e as luzes estiverem ligados, voc\u00ea ultrapassar\u00e1 a classifica\u00e7\u00e3o de 1.500 watts do disjuntor, fazendo com que ele desarme e desligue a eletricidade.<\/p>\n\n\n\n<p><strong>Solu\u00e7\u00f5es<\/strong><\/p>\n\n\n\n<p>A carga m\u00e1xima em cada circuito n\u00e3o \u00e9 a melhor refer\u00eancia a ser almejada. \u00c9 desej\u00e1vel que a carga normal em um circuito exceda 80% da carga m\u00e1xima (nominal) para uma margem de seguran\u00e7a. A meta de carga segura para um circuito de 15 A \u00e9 de 1.440 watts; para um circuito de 20 A, o alvo de carga segura \u00e9 de 1.920 watts.<\/p>\n\n\n\n<p>Se os c\u00e1lculos do seu circuito mostrarem que voc\u00ea est\u00e1 consumindo mais watts de um circuito do que o n\u00famero de carga seguro - ou se estiver sobrecarregando o circuito frequentemente excedendo a carga nominal - existem algumas estrat\u00e9gias para diminuir a carga no circuito para evitar sobrecarga:<\/p>\n\n\n\n<p>\u2022 Mova os aparelhos plug-in para um circuito menos usado (use seu mapeamento e c\u00e1lculos de circuito para identificar circuitos que tenham bastante pot\u00eancia dispon\u00edvel).<\/p>\n\n\n\n<p>\u2022 Evite ligar muitas coisas ao mesmo tempo. Desligue a TV e o sistema de som ao aspirar, por exemplo (voc\u00ea n\u00e3o conseguir\u00e1 ouvi-los de qualquer maneira).<\/p>\n\n\n\n<p>\u2022 Substitua as l\u00e2mpadas incandescentes ou hal\u00f3genas por l\u00e2mpadas LED (preferidas) ou CFL (fluorescentes) com efici\u00eancia energ\u00e9tica para reduzir as cargas de ilumina\u00e7\u00e3o.<\/p>\n\n\n\n<p>\u2022 Novos circuitos para dispositivos de alta demanda devem ser instalados. <\/p>\n\n\n\n<p>Se voc\u00ea quiser saber mais sobre medidas preventivas, <a href=\"https:\/\/www.electrical4uonline.com\/what-is-overcurrent-protection-and-devices\/\" target=\"_blank\" rel=\"noreferrer noopener\">Clique aqui<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Descubra maneiras de evitar sobrecargas, incluindo mapeamento de circuito e c\u00e1lculo de carga, identificando quais circuitos alimentam quais dispositivos e calculando a classifica\u00e7\u00e3o de carga segura para cada circuito. <\/p>","protected":false},"author":1,"featured_media":6658,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-6657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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