How to install a circuit breaker and what is the correct position?

 

 

The circuit breaker is a present and mandatory component in any electrical installation, or at least it should be. For this reason, the electrician is in constant contact with this component, but doubts still appear, apparently simple, but that makes a total difference, such as when assembling a residential electrical panel, they do not know how to install a circuit breaker, which is the correct position of the circuit breaker or how to connect the wires in the circuit breaker. We will clarify these doubts and give tips on how to install the circuit breakers, come on guys!

What is a circuit breaker and what is the breaker for?

The circuit breaker is basically an automatic switch, which, when identifying an overload current or short circuit, cuts the circuit, thus preventing the equipment and the circuit itself from being damaged.

Tips on how to install a circuit breaker:

Warnings:

  • Even at low voltage or low voltage, an electric shock can be fatal under certain conditions. Therefore, disconnect the installation circuits whenever you work on them.
  • If you are unsure as to the instructions that will be given, do nothing, call a trained professional for this type of service
  • Do not install a circuit breaker in a box for which it was not designed or does not support the required quantity, do the sizing first.
  • Before using the test devices, make sure they are working, test in trusted places, on circuits that you know are active or not.

Materials and tools:

We recommend that you use the right tools, depending on your purpose. Use materials and tools of good origin and quality, so that risks are minimized as much as possible during installation, in addition to providing a quality installation. To do the installation you will need:

  • Circuit breaker;
  • Cables;
  • Hangtags;
  • Stripping pliers;
  • Cutting pliers;
  • Screwdriver or “Philips”;
  • Test key;
  • Multimeter.

 

How to install circuit breakers.

Installing a circuit breaker step by step:

  1. A eletricidade é algo perigoso, portanto desligue os circuitos antes começar a instalação. Recomendamos que o disjuntor geral seja desligado. Notifique a todos que estão presentes na instalação que você estará trabalhando naquele local, para que ninguém venha ligar o circuito novamente enquanto esteja fazendo a instalação.
  2. Recomendamos que você tenha cadeado, para que possa trancar o disjuntor e ninguém ligue o circuito sem que você esteja ciente. Logo após ter desligado, certifique-se que o local onde será instalado o novo disjuntor esteja desenergizado.
  3. Se estiver acrescentando o disjuntor em um quadro de distribuição de circuitos (QDC), veja a posição com que os demais estão, onde é entrada e saída, para manter um padrão de organização, reduzindo as chances de erros. O mesmo deverá ser feito caso seja feito uma nova instalação no QDC.
  4. Faça a fixação dos dispositivos de acordo com seu modelo, se é DIN ou NEMA, conforme que os disjuntores sejam alimentados por cima e suas saídas por baixo, de maneira que todos fiquem padronizados, respeitando determinada ordem.
  5. Com o auxílio de um alicate decapador, desencape os condutores. Faça a alimentação dos disjuntores por cima, caso seja montagem de um quadro de distribuição novo a saída do disjuntor geral é ligado na entrada dos demais, que são interligados por jumpers.
  6. Connect the cable of each circuit to the output terminal of their respective circuit breakers. It is important to highlight that all circuit breakers that mark their polarity, such as where phase input and output for example, are respected, so that damage is minimized. Just to make sure that everything is securely fixed, lightly pull the cables, so you can check if they are really tight on the terminals.
  7. Before closing the QDC connect the circuits and do the tests, to check if everything is right and if there is no irregularity. Finally, put a label specifying which circuit it belongs to.

We finished this article here and we hope to have removed all your doubts about how to install the circuit breakers! If you still have any questions or curiosity about this subject, leave it in the comments and we will answer!

The circuit breaker is a present and mandatory component in any electrical installation, or at least it should be. For this reason the electrician is in constant contact with this component, but doubts still appear, apparently simple, but that make a total difference, such as when assembling a residential electrical panel, they do not know how to install a circuit breaker, which is the correct position of the circuit breaker or how to connect the wires in the circuit breaker. We will clarify these doubts and give tips on how to install the circuit breakers, come on guys!

What is a circuit breaker and what is the breaker for?

The circuit breaker is basically an automatic switch, which, when identifying an overload current or short circuit, cuts the circuit, thus preventing the equipment and the circuit itself from being damaged.

Tips on how to install a circuit breaker:

Warnings:

  • Even at low voltage or low voltage, an electric shock can be fatal under certain conditions. Therefore, disconnect the installation circuits whenever you work on them.
  • If you are unsure as to the instructions that will be given, do nothing, call a trained professional for this type of service
  • Do not install a circuit breaker in a box for which it was not designed or does not support the required quantity, do the sizing first.
  • Before using the test devices, make sure they are working, test in trusted places, on circuits that you know are active or not.

Materials and tools:

We recommend that you use the right tools, depending on your purpose. Use materials and tools of good origin and quality, so that risks are minimized as much as possible during installation, in addition to providing a quality installation. To do the installation you will need:

  • Circuit breaker;
  • Cables;
  • Hang tags;
  • Stripping pliers;
  • Cutting pliers;
  • Screwdriver or “Philips”;
  • Test key;
  • Multimeter.

 

How to install circuit breakers.

Installing a circuit breaker step by step:

  1. A eletricidade é algo perigoso, portanto desligue os circuitos antes começar a instalação. Recomendamos que o disjuntor geral seja desligado. Notifique a todos que estão presentes na instalação que você estará trabalhando naquele local, para que ninguém venha ligar o circuito novamente enquanto esteja fazendo a instalação.
  2. Recomendamos que você tenha cadeado, para que possa trancar o disjuntor e ninguém ligue o circuito sem que você esteja ciente. Logo após ter desligado, certifique-se que o local onde será instalado o novo disjuntor esteja desenergizado.
  3. Se estiver acrescentando o disjuntor em um quadro de distribuição de circuitos (QDC), veja a posição com que os demais estão, onde é entrada e saída, para manter um padrão de organização, reduzindo as chances de erros. O mesmo deverá ser feito caso seja feito uma nova instalação no QDC.
  4. Faça a fixação dos dispositivos de acordo com seu modelo, se é DIN ou NEMA, conforme que os disjuntores sejam alimentados por cima e suas saídas por baixo, de maneira que todos fiquem padronizados, respeitando determinada ordem.
  5. Com o auxílio de um alicate decapador, desencape os condutores. Faça a alimentação dos disjuntores por cima, caso seja montagem de um quadro de distribuição novo a saída do disjuntor geral é ligado na entrada dos demais, que são interligados por jumpers.
  6. Connect the cable of each circuit to the output terminal of their respective circuit breakers. It is important to highlight that all circuit breakers that mark their polarity, such as where phase input and output for example, are respected, so that damage is minimized. Just to make sure that everything is securely fixed, lightly pull the cables, so you can check if they are really tight on the terminals.
  7. Before closing the QDC connect the circuits and do the tests, to check if everything is right and if there is no irregularity. Finally, put a label specifying which circuit it belongs to.

We finished this article here and we hope to have removed all your doubts about how to install the circuit breakers! If you still have any questions or curiosity about this subject, leave it in the comments and we will answer!