The IET is carrying out some important updates between 17-30 April and all of our websites will be view only. For more information, read this Announcement

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 27 replies
  • Subscribers 31 subscribers
  • Views 3884 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

4mm2 twin and earth cable

Former Community Member
Former Community Member
regarding 4mm2 cable was it ever available in the old colours with solid conductors rather than the 7 strands version? Ive just done a pre - inspection of a property before doing an EICR and found 2 radial circuits fed from 32A MCBS. The cables appear to be  larger than 2,5mm2 . I'm going back to inspect this property with a view to reducing the MCB's to 20A if if they are 2.5mm2. I'm also taking  a Vernier  gauge to measure the cable diameters and compare to reference tables.

The installation is approximately 30 years old but is in very good condition.
Parents
  • Former Community Member
    0 Former Community Member
    Davezawadi

    I was asked by a friend to have a quick look at his consumer unit (i had no tools etc with me). I noticed that the 2 radial cables were physically slightly larger in diameter than the 2.5mm2 cable next to it. 

    He asked if they were 4mm2  but I told him that as far as I could remember 4mm2 cable was always 7 core stranded. And I'd never come across 4mm2 solid twin earth cable in my 40 years plus in the industry.

    I did say that the mcbs  might have to be changed and that an EICR should be conducted.- maybe  my post was badly scripted.

    That is why I asked the question regarding the cable was for information only. 

    Regards

    Stuart Ba
Reply
  • Former Community Member
    0 Former Community Member
    Davezawadi

    I was asked by a friend to have a quick look at his consumer unit (i had no tools etc with me). I noticed that the 2 radial cables were physically slightly larger in diameter than the 2.5mm2 cable next to it. 

    He asked if they were 4mm2  but I told him that as far as I could remember 4mm2 cable was always 7 core stranded. And I'd never come across 4mm2 solid twin earth cable in my 40 years plus in the industry.

    I did say that the mcbs  might have to be changed and that an EICR should be conducted.- maybe  my post was badly scripted.

    That is why I asked the question regarding the cable was for information only. 

    Regards

    Stuart Ba
Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines