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 44 replies
  • Subscribers 16 subscribers
  • Views 4529 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

Too Modest

Former Community Member
Former Community Member
If it can be demonstrated to the scientific community/press/public at large that "the RCD will trip or nary a tingle will be felt", then CBE's, MBE's, Knighthoods or perhaps a Nobel prize will be sure to follow!


This is surely the biggest step forward in Electrical safety since the invention of fuse wire!


In these bleak times the British public needs to hear good news like this.
Parents
  • Former Community Member
    0 Former Community Member
    Helios:

    mmm yes they are fault devices , must be my reading of a fault , it just says current , which iI guess is why they are called residual current device , and are for fault protection , so yes voltage variation in itself does not operate them , however in fault voltage may no doubt be going somewhere else , which i believe (as its no longer in the line conductor) and this lack of voltage in the line conductore is what causes the trip . A voltage drop (I think therefore) would also cause a trip ??


    I think you maybe missing the point:

    If the supply voltage associated with that graph is in truth for example 110v (55v to earth), then the graph may well be accurate.

    But to claim (or try to give the impression in this example) that 300mA @ 230v, for a split second is "perceptible but causes no muscle reaction" is absolute nonsense and is therefore a very, very dangerous thing to upload to this thread.

    The author of that graph has deliberately tried to mislead our readers and should, if anyone is hurt or even killed as a result, be prosecuted at some point in the future.


Reply
  • Former Community Member
    0 Former Community Member
    Helios:

    mmm yes they are fault devices , must be my reading of a fault , it just says current , which iI guess is why they are called residual current device , and are for fault protection , so yes voltage variation in itself does not operate them , however in fault voltage may no doubt be going somewhere else , which i believe (as its no longer in the line conductor) and this lack of voltage in the line conductore is what causes the trip . A voltage drop (I think therefore) would also cause a trip ??


    I think you maybe missing the point:

    If the supply voltage associated with that graph is in truth for example 110v (55v to earth), then the graph may well be accurate.

    But to claim (or try to give the impression in this example) that 300mA @ 230v, for a split second is "perceptible but causes no muscle reaction" is absolute nonsense and is therefore a very, very dangerous thing to upload to this thread.

    The author of that graph has deliberately tried to mislead our readers and should, if anyone is hurt or even killed as a result, be prosecuted at some point in the future.


Children
No Data

Community Rules & Guidelines