Como você testa quanto uma tomada pode suportar?
Você precisará saber a amperagem e a voltagem do seu circuito para usar a Lei de Ohm para descobrir quanto ele pode suportar. Simplesmentemultiplique a amperagem pela tensão para calcular a capacidade de potência.
Para testar a tensão CA, toque as pontas de prova do multímetro no terminal COM e a ponta de prova vermelha no terminal VΩmA. Em seguida, ligue o multímetro digital e encoste as pontas de prova nos fios preto e branco da tomada. Se o multímetro digital lerentre 0 e 120 tensão máxima, então a tomada está funcionando corretamente.
Usando uma mão, insira uma sonda em cada slot vertical na saída. O vermelho vai para o slot menor, o preto para o maior. Uma tomada funcionando corretamente fornecerá uma leitura de 110–120 volts. Se não houver leitura, algo está errado com a fiação na tomada ou o disjuntor está desarmado.
O primeiro passo para encontrar um curto-circuito é procurar sinais físicos. Isso pode incluirqueimaduras visíveis ou metal derretido em fios, cheiro de queimado ou luzes piscando. Depois de identificar um curto potencial, use o multímetro para confirmar a tensão, colocando-o em sua configuração de resistência ou continuidade.
Odores de queima
Se você notar um cheiro de queimado vindo de uma tomada elétrica, ou se um cheiro de queimado estiver presente no prédio sem nenhuma fonte identificável, esses são sinais de alerta de que sua(s) tomada(s) pode(m) estar com defeito.
| Indicador | Medição | Intervalo normal |
|---|---|---|
| Tensão | Tensão AC | 110-120 volts |
| Atual | corrente alternada | 0,1-15 amperes |
| Resistência | Ohms | 0-0,5 ohms |
| Continuidade | Ohms | 0 ohms |
Existem algumas variações da tomada de 110 volts com base no tamanho do disjuntor associado ao circuito, que é medido em Amps. As 2 variações mais comuns são15 Ampères e 20 Ampères.
Para diagnosticar uma sobrecarga do disjuntor, você pode testar o disjuntorusando um amperímetro de aperto. Este testador de disjuntor é usado para verificar sobrecargas e curtos que estão em andamento e determinar se a corrente elétrica está passando pelo circuito.
Mais uma vez, uma boa regra prática é1,5 amperes por tomada, mas pare em 80% da amperagem total do disjuntor para que o disjuntor não dispare constantemente. No caso de 15 amperes, recomendamos no máximo 8 tomadas.
Fornecimento de tomadas elétricas domésticas120 volts na América do Norte e 220-240 volts na Europa, com a maioria das nações tendo tomadas que fornecem tensões semelhantes a um desses dois valores.
Como sei qual tomada está ruim?
- Plástico descolorido ou derretido. ...
- Fumaça, faíscas e odores de queimado. ...
- Cobrir a tomada parece quente. ...
- Plugue cai da tomada. ...
- A tomada tem aberturas para apenas plugues de dois pinos.
Você pode estar sobrecarregando esse circuito específico com muitos aparelhos ou dispositivos funcionando ao mesmo tempo. Ou pode haver um problema com a fiação ou com o próprio disjuntor. Se a sua tomada não estiver funcionando, mas o disjuntor também não estiver desarmado, pode haver um problema com o disjuntor.
Se uma tomada não estiver funcionando,verifique o painel do disjuntor. O disjuntor disparado parecerá estar entre as posições 'ligado' e 'desligado'. Mude o interruptor para desligado e, em seguida, de volta para ligado. Isso redefinirá o circuito e possivelmente consertará sua tomada quebrada.
Os sinais de que você precisa considerar a substituição de uma tomada elétrica podem ser bastante claros.A tomada pode ter uma placa frontal rachada ou estar quente ao tocá-la. Você pode ver uma faísca ou fumaça ou sentir um cheiro de queimado. Talvez um plugue não permaneça na tomada ou os itens conectados a ele pareçam não estar recebendo energia.
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