{"id":7892,"date":"2026-10-01T10:35:52","date_gmt":"2026-10-01T10:35:52","guid":{"rendered":"https:\/\/gog-elec.com\/?p=7892"},"modified":"2026-10-01T10:35:54","modified_gmt":"2026-10-01T10:35:54","slug":"gfci-meaning-in-electrical","status":"publish","type":"post","link":"https:\/\/gog-elec.com\/pt\/blog\/gfci-meaning-in-electrical\/","title":{"rendered":"Significado de GFCI em El\u00e9trica"},"content":{"rendered":"<p>Todos j\u00e1 ouviram falar deste acr\u00f4nimo conhecido como GFCI, mas poucas pessoas entendem o que ele realmente significa e faz. Segundo profissionais, eletricistas usam essa express\u00e3o livremente e inspetores a citam em seus relat\u00f3rios, enquanto os n\u00e3o iniciados apenas concordam com a cabe\u00e7a. A raz\u00e3o para isso est\u00e1 no fato de que duas palavras diferentes s\u00e3o usadas para designar o mesmo dispositivo, ambas sem fornecer muitos insights sobre o que o aparelho realmente faz e como funciona.<\/p>\n<p>Neste artigo, come\u00e7aremos esclarecendo o que o termo significa, e s\u00f3 ent\u00e3o avan\u00e7aremos para detalhes importantes do dispositivo, como os crit\u00e9rios que tornam o aparelho especial, os locais onde ele deve ser instalado conforme os c\u00f3digos de constru\u00e7\u00e3o, as diferen\u00e7as entre GFCI e outros dispositivos como GFI, AFCI e RCD, e os custos m\u00e9dios do dispositivo no ano de 2026.<\/p>\n<blockquote><p>GFCI \u00e9 a sigla para Ground Fault Circuit Interrupter. Este dispositivo \u00e9 destinado \u00e0 seguran\u00e7a porque monitora a diferen\u00e7a entre a quantidade de eletricidade que sai pelo fio fase e a que retorna pelo fio neutro. Quando a diferen\u00e7a se aproxima de cerca de 4 a 6 miliamperes, o GFCI abre o circuito em cerca de 1\/40 de segundo, que \u00e9 a rapidez com que ele reage \u00e0 diferen\u00e7a nas correntes. Diferentemente dos disjuntores que protegem equipamentos contra sobrecargas, os GFCIs protegem pessoas contra choques el\u00e9tricos. O pre\u00e7o de uma tomada GFCI \u00e9 $18\u2013$30 e o disjuntor GFCI \u00e9 $45\u2013$90; o custo de instala\u00e7\u00e3o de um GFCI \u00e9 $130\u2013$350. GFI \u00e9 sin\u00f4nimo de GFCI, pois se refere ao mesmo tipo de dispositivo, mas com um nome ligeiramente mais curto.<\/p><\/blockquote>\n<h2>Significado de GFCI em El\u00e9trica: A Forma Completa, Claramente<\/h2>\n<p>O nome GFCI \u00e9 descritivo; ele nos d\u00e1 tr\u00eas ideias a partir de suas tr\u00eas partes. \u201cGround fault\u201d significa que a corrente est\u00e1 fazendo coisas estranhas, como ir para o solo atrav\u00e9s de uma pessoa, ir para o solo atrav\u00e9s de uma po\u00e7a de \u00e1gua, ou ir para o solo atrav\u00e9s de um condutor rompido que toca um corpo met\u00e1lico aterrado. O verbo \u201cto interrupt\u201d refere-se a desligar o circuito. O dispositivo poderia ser chamado simplesmente de \u201cinterrompedor de circuito\u201d, pois \u00e9 isso que ele faz. Portanto, GFCI \u00e9 o dispositivo que detecta a corrente fluindo onde n\u00e3o deveria e corta a energia antes que algu\u00e9m seja eletrocutado.<\/p>\n<p>Um GFCI \u00e9 especial em seu design devido ao n\u00edvel de corrente ao qual reage. Disjuntores comuns atuam no n\u00edvel de 15 A, valor suficiente para proteger um condutor 14 AWG. GFCIs operam em um n\u00edvel de 4-6 mA de corrente de fuga, o que corresponde a um quarent\u00e9simo da corrente necess\u00e1ria para que um disjuntor pequeno atue. A raz\u00e3o para essa diferen\u00e7a \u00e9 a seguinte: a quantidade de corrente na faixa de 10-30 mA passando pelo corpo humano causaria contra\u00e7\u00e3o muscular cont\u00ednua e at\u00e9 fibrila\u00e7\u00e3o ventricular. 50 mA podem matar uma pessoa imediatamente. GFCIs operam em n\u00edveis muito mais seguros de corrente de fuga para que uma pessoa que receba um choque el\u00e9trico n\u00e3o morra.<\/p>\n<p>Uma \u00faltima coisa importante deve ser lembrada sobre os GFCIs: esses dispositivos n\u00e3o atuam como dispositivos de prote\u00e7\u00e3o contra sobrecorrente.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7894\" src=\"https:\/\/gog-elec.com\/wp-content\/uploads\/2026\/09\/GFCI-Meaning-in-Electrical-The-Full-Form-Plainly.webp\" alt=\"Significado de GFCI em El\u00e9trica: A Forma Completa, Claramente\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Assim, os GFCIs n\u00e3o protegem os fios contra sobrecarga; eles n\u00e3o interrompem curtos-circuitos e n\u00e3o protegem motores contra o consumo excessivo de corrente.<\/h2>\n<p>Em vez disso, os GFCIs detectam a assinatura de fuga que precede um choque el\u00e9trico, que \u00e9 uma forma completamente diferente de falha.<\/p>\n<p>Como um GFCI Funciona Realmente.<\/p>\n<p>Cada interruptor de circuito por falha \u00e0 terra (GFCI) cont\u00e9m um pequeno dispositivo chamado transformador de corrente pelo qual passam tanto os fios fase quanto neutro. <a href=\"https:\/\/gog-elec.com\/pt\/blog\/what-is-an-electrical-receptacle\/\">Em condi\u00e7\u00f5es normais, a quantidade de corrente enviada pelo fio fase \u00e9 igual \u00e0 quantidade de corrente que retorna pelo fio neutro, fazendo com que os campos magn\u00e9ticos criados por ambos os fios no transformador se cancelem mutuamente, e portanto nenhuma corrente seja detectada.<\/a> Este \u00e9 o princ\u00edpio por tr\u00e1s do funcionamento de um GFCI.<\/p>\n<p>Assim que alguma corrente vaza para a terra atrav\u00e9s do corpo, \u00e1gua ou isolamento danificado, a corrente enviada difere da corrente que retorna pelo fio neutro.<\/p>\n<h2>Isso faz com que a corrente flua atrav\u00e9s da bobina, produzindo um sinal mensur\u00e1vel que pode ser comparado ao limite de disparo.<\/h2>\n<p>De acordo com o Artigo 210 do National Electrical Code, os requisitos para GFCI est\u00e3o em vigor desde que os dispositivos GFCI foram exigidos pela primeira vez para tomadas externas em 1971. As especifica\u00e7\u00f5es regulat\u00f3rias para dispositivos GFCI continuaram a se expandir nos anos seguintes. Assim, os dispositivos GFCI tamb\u00e9m foram obrigat\u00f3rios para banheiros em 1975, depois para garagens em 1978, e assim por diante at\u00e9 os dias atuais. Se voc\u00ea tem trabalhado com qualquer vers\u00e3o anterior do c\u00f3digo, pode estar perdendo algumas localiza\u00e7\u00f5es em sua informa\u00e7\u00e3o.<\/p>\n<p>O NEC foi atualizado novamente em sua edi\u00e7\u00e3o de 2023, que agora exige prote\u00e7\u00e3o GFCI para todas as tomadas de 125 V-250 V reconhecidas na categoria de 50 A. Isso inclui todas as tomadas usadas em unidades residenciais, das quais podemos mencionar banheiros, garagens e outros edif\u00edcios, bem como tomadas externas, espa\u00e7os rastejantes, por\u00f5es, \u00e1reas de cozinha, casas de barcos, al\u00e9m de qualquer coisa posicionada em ambientes internos que esteja a at\u00e9 seis p\u00e9s de uma banheira ou chuveiro, bem como locais \u00famidos internos e lavanderias. A expans\u00e3o para tomadas de 250 V \u00e9 a mudan\u00e7a que surpreende as pessoas, pois significa que a partir de agora tomadas de 240 V em garagens e \u00e1reas externas precisam de prote\u00e7\u00e3o GFCI.<\/p>\n<p>Quanto \u00e0s tomadas comerciais, estamos nos referindo \u00e0 se\u00e7\u00e3o NEC 210.8(B) e todas as ocupa\u00e7\u00f5es de usu\u00e1rios, que t\u00eam a ver com as \u00e1reas comerciais de cozinha mencionadas anteriormente, onde as tomadas n\u00e3o est\u00e3o inclu\u00eddas em aparelhos devido \u00e0 sua natureza, configura\u00e7\u00f5es em telhados, bem como configura\u00e7\u00f5es externas dependendo das tomadas mencionadas.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Localiza\u00e7\u00e3o<\/th>\n<th>8(A) Resid\u00eancias<\/th>\n<th>8(B) N\u00e3o Resid\u00eancias<\/th>\n<th>Notes<\/th>\n<\/tr>\n<tr>\n<td>Banheiros<\/td>\n<td>Todas as tomadas<\/td>\n<td>Todas as tomadas<\/td>\n<td>Todo o c\u00f4modo, n\u00e3o apenas pr\u00f3ximo \u00e0 pia<\/td>\n<\/tr>\n<tr>\n<td>Cozinhas<\/td>\n<td>\u00c1reas de cozinha<\/td>\n<td>Cozinhas comerciais<\/td>\n<td>N\u00e3o exigido para tomadas integradas a um aparelho<\/td>\n<\/tr>\n<tr>\n<td>Garagens \/ baias de servi\u00e7o<\/td>\n<td>Sim<\/td>\n<td>Sim<\/td>\n<td>A exce\u00e7\u00e3o para tomada de abridor de porta de garagem foi removida na edi\u00e7\u00e3o de 2020<\/td>\n<\/tr>\n<tr>\n<td>Externo<\/td>\n<td>Todas as tomadas<\/td>\n<td>Todas as tomadas<\/td>\n<td>Use dispositivos resistentes \u00e0s intemp\u00e9ries (WR)<\/td>\n<\/tr>\n<tr>\n<td>\u00c1reas de lavanderia<\/td>\n<td>Sim (adicionado em 2023)<\/td>\n<td>\u2014<\/td>\n<td>Todas as tomadas no espa\u00e7o da lavanderia<\/td>\n<\/tr>\n<tr>\n<td>Por\u00f5es \/ espa\u00e7os rastejantes<\/td>\n<td>Sim<\/td>\n<td>Espa\u00e7os rastejantes no n\u00edvel ou abaixo do solo<\/td>\n<td>Cobertura ampliada em 2023<\/td>\n<\/tr>\n<tr>\n<td>Dentro de 6 p\u00e9s de uma pia<\/td>\n<td>Sim<\/td>\n<td>Sim<\/td>\n<td>Medido a partir da borda externa da pia<\/td>\n<\/tr>\n<tr>\n<td>Telhados<\/td>\n<td>\u2014<\/td>\n<td>Todas as tomadas<\/td>\n<td>Corre\u00e7\u00e3o comum em trabalhos comerciais<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Muitas pessoas ignoram uma ideia importante: Ado\u00e7\u00e3o. O NEC \u00e9 um bom guia. Ele s\u00f3 \u00e9 aplic\u00e1vel se uma jurisdi\u00e7\u00e3o o adotar. Os estados que temos por aqui usam a maioria das edi\u00e7\u00f5es que v\u00e3o de 2020 a 2023. Quando voc\u00ea quiser mencionar algo como exigido ou n\u00e3o exigido com base em alguma autoridade, verifique a edi\u00e7\u00e3o do NEC que sua jurisdi\u00e7\u00e3o adotou. Se voc\u00ea est\u00e1 adquirindo dispositivos para um projeto em vez de inspecionar um, a mesma cautela se aplica ao hardware \u2014 combinar o tipo de dispositivo com a configura\u00e7\u00e3o da tomada em uso \u00e9 uma disciplina pr\u00f3pria, e nossa refer\u00eancia sobre <a href=\"https:\/\/gog-elec.com\/pt\/blog\/different-types-of-electrical-sockets\/\">os diferentes tipos de tomadas usados ao redor do mundo e onde cada um se aplica<\/a> \u00e9 uma verifica\u00e7\u00e3o \u00fatil antes de fazer um pedido.<\/p>\n<h2>GFCI vs GFI vs AFCI vs RCD: Esclarecendo os Quatro Nomes<\/h2>\n<p>Existem quatro termos aqui. Dois deles significam a mesma coisa, enquanto os outros dois previnem coisas completamente diferentes. Se voc\u00ea conseguir esclarecer essa confus\u00e3o em trinta segundos, isso o salvar\u00e1 de muitos mal-entendidos.<\/p>\n<p>Na verdade, GFCI e GFI significam o mesmo dispositivo. GFI significa Ground Fault Interrupter enquanto GFCI representa Ground Fault Circuit Interrupter. A diferen\u00e7a na grafia dos dois acr\u00f4nimos ocorreu porque a primeira abrevia\u00e7\u00e3o entrou em uso primeiro e tem aparecido como o nome dos dispositivos ao longo dos anos. Ent\u00e3o, por exemplo, voc\u00ea pode encontrar o produto fabricado pela Leviton ou Eaton com GFI no nome e Ground Fault Circuit Interrupter detalhado na embalagem do dispositivo. N\u00e3o h\u00e1 diferen\u00e7a entre os dois em termos de fun\u00e7\u00e3o, padr\u00e3o ou certifica\u00e7\u00e3o. O fato de algu\u00e9m dizer que GFI \u00e9 uma vers\u00e3o simplificada de GFCI se deve \u00e0 embalagem do produto e n\u00e3o ao lado da engenharia da quest\u00e3o.<\/p>\n<p>Quanto ao AFCI, ele representa outro tipo de dispositivo. Arc Fault Circuit Interrupter \u00e9 projetado para detectar um arco perigoso. Com isso, quero dizer a detec\u00e7\u00e3o da assinatura gerada pelo arco devido a raz\u00f5es em aparelhos que podem estar quebrados. Diferentemente do GFCI, ele n\u00e3o pode prevenir o choque el\u00e9trico. Ele apenas fornece a prote\u00e7\u00e3o necess\u00e1ria contra o risco de inc\u00eandio. O dispositivo AFCI funciona da mesma forma que o GFCI, o que significa que circuitos de fun\u00e7\u00e3o dupla s\u00e3o mais eficientes do que os primeiros dispositivos de alta frequ\u00eancia.<\/p>\n<p>A alternativa internacional ao GFCI \u00e9 o RCD. Quase todos os pa\u00edses, exceto a Am\u00e9rica do Norte, aplicam Dispositivos de Corrente Residual. O fato \u00e9 que o RCD \u00e9 controlado pelos padr\u00f5es IEC61008 e IEC61009, enquanto possui um n\u00edvel padr\u00e3o de sensibilidade em torno de 30 mA. Para uma vis\u00e3o mais completa de como essas diferen\u00e7as de mercado se manifestam na pr\u00e1tica, <a href=\"https:\/\/gog-elec.com\/pt\/blog\/uk-voltage-vs-us\/\">como os sistemas el\u00e9tricos do Reino Unido e dos EUA se comparam em tens\u00e3o, frequ\u00eancia e estrat\u00e9gia de prote\u00e7\u00e3o<\/a> vale a pena ler antes de especificar.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Dispositivo<\/th>\n<th>Detecta<\/th>\n<th>Limite de disparo<\/th>\n<th>Protege contra<\/th>\n<th>Norma<\/th>\n<\/tr>\n<tr>\n<td>GFCI<\/td>\n<td>Desequil\u00edbrio de corrente quente\/neutra<\/td>\n<td>4\u20136 mA<\/td>\n<td>Choque el\u00e9trico<\/td>\n<td>UL 943<\/td>\n<\/tr>\n<tr>\n<td>GFI<\/td>\n<td>Mesmo dispositivo<\/td>\n<td>4\u20136 mA<\/td>\n<td>Choque el\u00e9trico<\/td>\n<td>UL 943<\/td>\n<\/tr>\n<tr>\n<td>AFCI<\/td>\n<td>Assinatura de arco na forma de onda<\/td>\n<td>Algoritmo de detec\u00e7\u00e3o de arco<\/td>\n<td>Inc\u00eandio el\u00e9trico<\/td>\n<td>UL 1699<\/td>\n<\/tr>\n<tr>\n<td>RCD (30 mA)<\/td>\n<td>Corrente residual para terra<\/td>\n<td>30 mA<\/td>\n<td>Choque e equipamento<\/td>\n<td>IEC 61008 \/ 61009<\/td>\n<\/tr>\n<tr>\n<td>RCBO<\/td>\n<td>Corrente residual + sobrecorrente<\/td>\n<td>30 mA + corrente nominal<\/td>\n<td>Choque, inc\u00eandio, sobrecarga<\/td>\n<td>IEC 61009<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7895\" src=\"https:\/\/gog-elec.com\/wp-content\/uploads\/2026\/09\/GFCI-vs-GFI-vs-AFCI-vs-RCD.webp\" alt=\"GFCI vs GFI vs AFCI vs RCD\" width=\"1448\" height=\"1086\" \/><\/p>\n<h2>Onde um GFCI pertence e onde n\u00e3o pertence<\/h2>\n<p>Por um lado, o c\u00f3digo fornece requisitos m\u00ednimos b\u00e1sicos em termos de disposi\u00e7\u00f5es de seguran\u00e7a. Por outro lado, a experi\u00eancia pr\u00e1tica indica em quais situa\u00e7\u00f5es \u00e9 necess\u00e1rio ir al\u00e9m do c\u00f3digo, e onde isso cria mais problemas do que solu\u00e7\u00f5es.<\/p>\n<p>Voc\u00ea pode querer considerar a instala\u00e7\u00e3o de prote\u00e7\u00e3o GFCI independentemente de ser exigido ou n\u00e3o: qualquer tomada pr\u00f3xima a aqu\u00e1rios, ou umidificadores\/desumidificadores, mas especialmente em casas antigas, porque um GFCI funciona em circuitos sem aterramento, pois pode detectar vazamento sem caminho de terra e pode ser instalado em vinte minutos por local. Claro, n\u00e3o \u00e9 uma alternativa \u00e0 reestrutura\u00e7\u00e3o el\u00e9trica e deve ser devidamente rotulado para refer\u00eancia futura.<\/p>\n<p>Tamb\u00e9m h\u00e1 casos em que ter um circuito dedicado para um equipamento grande apresenta um problema porque este \u00e9 o melhor exemplo de uma situa\u00e7\u00e3o onde a pessoa luta contra o equipamento em vez de tentar entend\u00ea-lo.<\/p>\n<h2>Quanto custam os dispositivos GFCI<\/h2>\n<p>Embora a m\u00e1quina custe pouco, a m\u00e3o de obra envolvida \u00e9 cara. Este fato deve ditar como voc\u00ea organiza o trabalho, j\u00e1 que os custos de m\u00e3o de obra s\u00e3o calculados por visita e n\u00e3o por dispositivo. Portanto, n\u00e3o faz sentido fazer o trabalho um dispositivo de cada vez.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Item<\/th>\n<th>Pre\u00e7o T\u00edpico<\/th>\n<th>Notes<\/th>\n<\/tr>\n<tr>\n<td>Tomada GFCI padr\u00e3o de 15 A ou 20 A<\/td>\n<td>$18\u2013$30<\/td>\n<td>Vers\u00f5es \u00e0 prova de viola\u00e7\u00e3o adicionam alguns d\u00f3lares<\/td>\n<\/tr>\n<tr>\n<td>Tomada GFCI \u00e0 prova de viola\u00e7\u00e3o (TR)<\/td>\n<td>$20\u2013$35<\/td>\n<td>Exigido em unidades residenciais conforme NEC 406.12<\/td>\n<\/tr>\n<tr>\n<td>Tomada GFCI resistente a intemp\u00e9ries (WR)<\/td>\n<td>$25\u2013$45<\/td>\n<td>Marcado WR; exigido ao ar livre conforme NEC 406.9<\/td>\n<\/tr>\n<tr>\n<td>Disjuntor GFCI, 15\u201350 A<\/td>\n<td>$45\u2013$90<\/td>\n<td>Protege todo o circuito; necessita espa\u00e7o no painel<\/td>\n<\/tr>\n<tr>\n<td>Disjuntor AFCI\/GFCI de fun\u00e7\u00e3o dupla<\/td>\n<td>$50\u2013$110<\/td>\n<td>Cobre dois requisitos do c\u00f3digo em um espa\u00e7o de polo<\/td>\n<\/tr>\n<tr>\n<td>Instala\u00e7\u00e3o profissional, por dispositivo<\/td>\n<td>$130\u2013$350<\/td>\n<td>Aproximadamente 1\u20132 horas; trabalho no painel custa mais<\/td>\n<\/tr>\n<tr>\n<td>Retrofit para toda a casa, 8\u201312 locais<\/td>\n<td>$900\u2013$2,500<\/td>\n<td>Batch the work to amortise the visit<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>There truly is a pricing gap between brands, which is not terribly large, as it depends mostly on trip speed, light indication behavior, and the presence of test function. New GFCIs have to test themselves at regular intervals and signal their failure instead of just sitting there in dead silence, which is a function I wouldn\u2019t overlook. If you are comparing device ranges at the supplier level rather than the retail shelf, <a href=\"https:\/\/gog-elec.com\/pt\/blog\/top-10-wiring-devices-brands-in-the-world\/\">how the major wiring-device brands position themselves on quality, price and market<\/a> gives you a reasonable map of who sits where. Brands differ far more on decorative plates and finish options than on the protection electronics inside, which is worth remembering when someone tries to sell you a premium GFCI on safety grounds.<\/p>\n<p>It is important to mention GOG&#8217;s position in the context of installations involving wiring devices. GOG develops various types of switches and sockets, which are partially visible when a circuit has been wired, and it sells those products to distributed network operators and OEM clients. Below protective devices lies the GFCI that has a special category as per the certifications. When it comes to North American projects, the correct approach is to buy the GFCI from a UL 943 manufacturer and the various socket outlets, plates, and switches from the manufacturer that provides the most acceptably fast lead times and consistency.<\/p>\n<h2>Installation and Maintenance Notes That Save Callbacks<\/h2>\n<p>Most issues concerning GFCIs do not occur due to device breakdowns. Instances of GFCIs malfunctioning can often be traced back to sloppy installation or lack of proper testing. There are five guidelines one needs to remember in order to avoid unnecessary nuisance tripping.<\/p>\n<p><span style=\"color: #ff0000;\">Keep GFCIs from daisy chaining.<\/span> Installing a GFCI downstream from another unit means both units are dealing with the very same circuit so that if any of them trips, the other one may go off as well or partially reset. There should be at least one GFCI installed per circuit so that following its LOAD terminals you can connect regular outlets.<\/p>\n<p><span style=\"color: #ff0000;\">Check that you are connecting loads and line wires correctly.<\/span> If you connect the wires incorrectly GFCI does not get damaged anywhere but it does not provide any protection either. Check your sockets with a plug-in device connected to the SUSPECTED socket, not just at the GFCI itself.If you are not confident reading the terminal markings, the same discipline applies as when wiring any device, and <a href=\"https:\/\/gog-elec.com\/pt\/blog\/how-do-you-select-wiring-devices\/\">how to evaluate wiring devices on rating, listing and build quality<\/a> covers the checks that keep you from installing something that will not hold up.<\/p>\n<p><span style=\"color: #ff0000;\">Tag the outlets that are protected.<\/span> A tiny sticker that says &#8220;GFCI protected,&#8221; is a good way to let the next person know who doesn\u2019t have to look around for the source of the nuisance. This is especially beneficial in case the GFCI has been placed upstream somewhere in the bathroom but is protecting the receptacle located in the hallway<\/p>\n<p><span style=\"color: #ff0000;\">Use weather-resistant devices outside, in an appropriate enclosure.<\/span> It should be noted that just by calling a GACFI a weather-resistant device does not make it waterproof. It requires an in-use (bubble) cover if something is plugged in continuously and must be mounted in such a way as to avoid water pooling on the face. Most GFCIs outside fail not because of electronics but due to water ingress.<\/p>\n<p><span style=\"color: #ff0000;\">Perform manual testing each month.<\/span> All you have to do is to press the TEST button and check that the device does trip and the downstream receptacles are dead, and then you press the RESET button. With the self-checking feature being available now you still cannot depend on the test made by the device. Making a manual test once a month is a good practice.<\/p>\n<h2>Perguntas Frequentes<\/h2>\n<h3>O que n\u00e3o deve ser conectado a um GFCI?<\/h3>\n<p>While there is no particular appliance designated to be installed on a GFCI receptacle according to the American electrical code, there is, instead, a practical list of appliances that, either because of their design or due to being old, cause frequent tripping of GFCIs by leaking electricity of more than 4-6mA. For example, refrigerators and freezers have always been on the list of \u201cculprits\u201d but dehumidifiers, sump pumps, treadmills and machinery with larger engines, high inrush laser printers and fluoros with old ballasts follow them close. It is interesting to note that the NEC has given a special consideration to the problem of the sump pump in the basement by allowing it to be plugged directly into the outlet without using GFCI. It would be good not to fight against GFCIs by removing them but to search for the leaking appliance by using a clamp meter on its cord.<\/p>\n<h3>What does a GFI outlet look like?<\/h3>\n<p>A GFI outlet appears to have two rectangular buttons, labelled TEST and RESET, usually with a small indicator light nearby. Most GFI outlets are of the standard duplex design and fit into a normal wall plate. However, decorator style GFI outlets are also popular and feature a wide rectangular opening and wider face. You can identify 20 A outlets by the T-shape in the left slot since 15A outlets have a square shaped slot. If you try to insert a probe into a tamper-resistant outlet, you will notice that there is a spring mechanism behind the openings. Furthermore, some outdoor GFI outlets have the WR inscription to show they are weather rated and come with a foam gasket. Most modern GFI outlets will show an indicator light to let you know that the protection is functioning. However, various brands of GFI outlets behave differently.<\/p>\n<h3>What does GFI mean in a text message?<\/h3>\n<p>There is not a fixed connotation for the phrase in question; in fact, the context dictates it. When texting casually, the phrase is most often read as a shorthand approval, but used more infrequesntly in British casual language where it can mean something more elaborate. Knowing this meaning is important if you\u2019d like to use the phrase in a company of your English coworkers. In case of a group chat about DIY repair and electrical works, it will usually mean \u2018device\u2019. The only meaning that you shouldn\u2019t take for granted is its technical usage: in case you are discussing the electrical project and someone uses the abbreviation, they can be referring to ground fault interrupter. What to do if one meaning does not suit your interpretation? In this case, just ask your colleague.<\/p>\n<h3>What does GFI stand for in government?<\/h3>\n<p>The term &#8220;government&#8221; does not have a singular interpretation since different agencies equate the abbreviation with various meanings. The term &#8220;government furnished information&#8221; is generally accepted in military procurement and defense contracting to mean that the term refers to the information that the government provides to any contractor in accordance with the Defense Industrial Base voluntary cyber security program, including cyber threat and security assurance practices (see 32 CFR 236.2). The same abbreviation has been used in DFARS 252.227-7023, which specifies what kind of restrictions apply to the confidential status of GFI information shared with an individual contractor, and you may have encountered different definitions like GFP that stands for Government Furnished Property. However, this abbreviation can mean different things depending on the organization that uses it such as when state, local, and federal authorities use GFI in relation to items related to general fund and grant funding instruments. In this case, the readers should check the definitions section of the document in order to see what this abbreviation actually means in a specific document.<\/p>\n<h2>Refer\u00eancias<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" rel=\"nofollow noopener\" target=\"_blank\">NFPA \u2014 NFPA 70 National Electrical Code, Article 210.8 GFCI protection<\/a><\/li>\n<li><a href=\"https:\/\/www.ul.com\/\" rel=\"nofollow noopener\" target=\"_blank\">UL Solutions \u2014 UL 943, Ground-Fault Circuit-Interrupters<\/a><\/li>\n<li><a href=\"https:\/\/www.ul.com\/\" rel=\"nofollow noopener\" target=\"_blank\">UL Solutions \u2014 UL 1699, Arc-Fault Circuit-Interrupters<\/a><\/li>\n<li><a href=\"https:\/\/www.iec.ch\/\" rel=\"nofollow noopener\" target=\"_blank\">International Electrotechnical Commission \u2014 IEC 61008 and IEC 61009, residual current devices<\/a><\/li>\n<li><a href=\"https:\/\/www.osha.gov\/electrical\" rel=\"nofollow noopener\" target=\"_blank\">OSHA \u2014 Electrical safety standards and ground-fault protection requirements<\/a><\/li>\n<li><a href=\"https:\/\/www.ecfr.gov\/current\/title-32\/subtitle-A\/part-236\" rel=\"nofollow noopener\" target=\"_blank\">eCFR \u2014 32 CFR Part 236, definition of Government Furnished Information (GFI)<\/a><\/li>\n<\/ul>\n<h2>Conclus\u00e3o<\/h2>\n<p>GFCI stands for Ground Fault Circuit Interrupter, and one important figure you should remember is 4 to 6 milliamps \u2014 the insignificant imbalance that makes it trip and the reason why it helps save lives when circuit breakers can\u2019t do anything at all. GFI is the same device under its older title, AFCI is the device that protects from fire as opposed to shock while an RCD quite likely performs a similar kind of action but at much less sensitive 30-mA threshold. It is the four titles that constitute 90% of confusion about the device.<\/p>\n<p>There are two things I would do. First, if your home was built before the concept of grounding appeared, it is senseless to start rewiring \u2014 GFCIs should be installed for wet installations before the rewiring but the prices should be compared prior to the start of work; GFCI can work on a circuit without grounding. Second, if you have GFCIs that keep tripping, do not think of them as of a problem. A device tripping at 4mA just plays its role, and the only interesting thing is which device leaks current. 10 seconds a month on the TEST button is everything that is needed.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Everybody has heard of this acronym known as GFCI, yet not many people understand what it actually means and does. According to professionals, electricians use this phrase freely and inspectors quote it in their reports, and the uninitiated just nod along. The reason for that lies in the fact that two different words are used [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7893,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-7892","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/posts\/7892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/comments?post=7892"}],"version-history":[{"count":2,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/posts\/7892\/revisions"}],"predecessor-version":[{"id":7897,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/posts\/7892\/revisions\/7897"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/media\/7893"}],"wp:attachment":[{"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/media?parent=7892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/categories?post=7892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gog-elec.com\/pt\/wp-json\/wp\/v2\/tags?post=7892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}