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 102 replies
  • Subscribers 31 subscribers
  • Views 7287 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

Shock Likelihood at Switch.

Zoomup
Mornin' All,


I have just inspected and tested a renovated  old flat's wiring. The original lighting wiring in places has no circuit protective conductor. The owner has installed metal plate light switches to two positions with wooden back boxes. At these two positions there is no circuit protective conductor. The flat has a new R.C.B.O. consumer unit and all other wiring is good.


I have recommended that the switches have a C.P.C. installed (difficult and disruptive) or be changed to all insulated types.


Just what is the shock risk at these two switch positions? What is the likelihood of the metal plates becoming live due to a fault? Has anyone every seen a metal plate switch break down so that the plates becomes live?


Thanks,


Z.

Parents
  • 0

    We have a strange relationship with risk of electric shock. All over my house we have exposed live parts hanging out of the ceiling and sitting on top of bed side tables, well at least they are when the lamps are removed.



    Indeed - and typical domestic toasters are perhaps even worse - much more live metal exposed and often more easily accessible. But all the same that's no excuse for not maintaining standards where they are sensible.

       - Andy.
Reply
  • 0

    We have a strange relationship with risk of electric shock. All over my house we have exposed live parts hanging out of the ceiling and sitting on top of bed side tables, well at least they are when the lamps are removed.



    Indeed - and typical domestic toasters are perhaps even worse - much more live metal exposed and often more easily accessible. But all the same that's no excuse for not maintaining standards where they are sensible.

       - Andy.
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