Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 26 replies
  • Subscribers 32 subscribers
  • Views 2988 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Lighting question

Former Community Member
Former Community Member
So today I wanted to add another switch in a house.


The extra switch would need to now include an intermediate due to it being already 2wY.


now when I took the switches off, one switch the common has just a single sheath core, the L1 and L2 are a 2 core cable L1 being Red and L2 being black.

This is exactly the same in the other switch.


I thought this must mean there is a JB somewhere ? In the light fitting there is 3 T&E, and 1 single cable which goes into the lamp live! 


I just can’t understand how this could be wired? 


Any ideas?
Parents
  • 0

    AJJewsbury:




    Is it a two plate system?



    Partly - it sounds more like a bit of a hybrid between 2-plate and 3-plate. The ceiling roses appear to have been provided with perm L & N - 3-plate style, but this particular switch may well have been looped from another switch 2-plate style. I recall our house being re-wired using just such a 'style' in the late 1970s. If it was really done properly the single cores (Ls at least) carried a c.p.c. too.


    Not to be recommended these days of course - unless done very carefully the EMI resulting from single core cables carrying unbalanced currents around large areas isn't ideal.


       - Andy.


    I was also thinking... live / feed, one end... switch line the other, with intermediates in between... all you need is a pair of strappers... would be interesting to see it!

     




     

Reply
  • 0

    AJJewsbury:




    Is it a two plate system?



    Partly - it sounds more like a bit of a hybrid between 2-plate and 3-plate. The ceiling roses appear to have been provided with perm L & N - 3-plate style, but this particular switch may well have been looped from another switch 2-plate style. I recall our house being re-wired using just such a 'style' in the late 1970s. If it was really done properly the single cores (Ls at least) carried a c.p.c. too.


    Not to be recommended these days of course - unless done very carefully the EMI resulting from single core cables carrying unbalanced currents around large areas isn't ideal.


       - Andy.


    I was also thinking... live / feed, one end... switch line the other, with intermediates in between... all you need is a pair of strappers... would be interesting to see it!

     




     

Children
No Data

Community Rules & Guidelines