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 2978 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

    Clint:




    Legh Richardson:

    I'm pretty sure there will be a Joint Box (JB) hiding somewhere under the floor or in the walls. We used a 25kHz live tracker on several occasions to chase around the installations to find all the hidden JBs.

    Legh


    What is this 25kHz you speak of? Also how do they work?





    It comes in two parts.

    1. a 25kHz pulsed (the signal is not continuous but pulsing) signal generator that is connected in series with the circuit under test.

    2. A detector, similar to a voltage tracker, that you run across ceilings and walls. The detector will pick up the high frequency pulses to a level of about 600mm of the particluar circuit under test.

    It costed around £200.00. We used it most of the time for tracking rfcs hidden JBs.and buried sockets

    Legh

     

Reply
  • 0

    Clint:




    Legh Richardson:

    I'm pretty sure there will be a Joint Box (JB) hiding somewhere under the floor or in the walls. We used a 25kHz live tracker on several occasions to chase around the installations to find all the hidden JBs.

    Legh


    What is this 25kHz you speak of? Also how do they work?





    It comes in two parts.

    1. a 25kHz pulsed (the signal is not continuous but pulsing) signal generator that is connected in series with the circuit under test.

    2. A detector, similar to a voltage tracker, that you run across ceilings and walls. The detector will pick up the high frequency pulses to a level of about 600mm of the particluar circuit under test.

    It costed around £200.00. We used it most of the time for tracking rfcs hidden JBs.and buried sockets

    Legh

     

Children
No Data

Community Rules & Guidelines