Jump to content

Welcome to Smart Home Forum by FIBARO

Dear Guest,

 

as you can notice parts of Smart Home Forum by FIBARO is not available for you. You have to register in order to view all content and post in our community. Don't worry! Registration is a simple free process that requires minimal information for you to sign up. Become a part of of Smart Home Forum by FIBARO by creating an account.

 

As a member you can:

  •     Start new topics and reply to others
  •     Follow topics and users to get email updates
  •     Get your own profile page and make new friends
  •     Send personal messages
  •     ... and learn a lot about our system!

 

Regards,

Smart Home Forum by FIBARO Team


  • 0

Reverse polarity protection circuit?


Wegerhoff

Question

What happens if a Fibaro Dimmer 2 is by mistake connected with reversed polarity, means L and N are reversed?


I am thinking of installing a Dimmer 2 in the base of a lamp I want to control, according to the attached minimum scheme. However, I cannot ensure that the mains plug is always plugged in the right way (conductor to conductor and zero to zero).


What happens if the lamp with Dimmer 2 inside is plugged in the wrong way? Does the module have a reverse polarity protection circuit? Will it break, or even worse many risk of fire?

Please login or register to see this attachment.

  • Like 1
Link to comment
Share on other sites

3 answers to this question

Recommended Posts

  • 0
On ‎8‎/‎20‎/‎2018 at 6:40 PM, Wegerhoff said:

What happens if a Fibaro Dimmer 2 is by mistake connected with reversed polarity, means L and N are reversed?


I am thinking of installing a Dimmer 2 in the base of a lamp I want to control, according to the attached minimum scheme. However, I cannot ensure that the mains plug is always plugged in the right way (conductor to conductor and zero to zero).


What happens if the lamp with Dimmer 2 inside is plugged in the wrong way? Does the module have a reverse polarity protection circuit? Will it break, or even worse many risk of fire?

Please login or register to see this attachment.

youre picture shows no N, so if you reverse the powerplug the light will stay off

Link to comment
Share on other sites

  • 0
  • Inquirer
  • youre picture shows no N, so if you reverse the powerplug the light will stay off

     

    Yes, that works. It's the minimal 2 wire connection, where the dimmers uses the consumer as N. Nevertheless using a third wire with N when available is better.

    Picture is taken from Fibaro Manual btw.

     

     

    31 minutes ago, trex said:

    With AC, there is no polarity as with DC. Switching L and N would cause no problems.

    Yes, thank you. Was confirmed by several electricians too, meanwhile. And indeed works fine.

    Edited by Wegerhoff
    Formattting
    Link to comment
    Share on other sites

    Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.

    Guest
    Answer this question...

    ×   Pasted as rich text.   Paste as plain text instead

      Only 75 emoji are allowed.

    ×   Your link has been automatically embedded.   Display as a link instead

    ×   Your previous content has been restored.   Clear editor

    ×   You cannot paste images directly. Upload or insert images from URL.

    ×
    ×
    • Create New...