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

  • Locked Locked
  • Replies 14 replies
  • Subscribers 37 subscribers
  • Views 1460 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

Adiabatic Lecture.

Zoomup

Dad my head hurts. Is this guy any good?

https://www.youtube.com/watch?v=eCqyvmRHBqw

Surely the R.C.B.O. would disconnect the supply within 20 to 30 mS with an earth fault, in reality Dad.

Z.

Parents

  • in reply to lyledunn

    Not sure if you can make this out on this single phase installation. The Device is a 100A time delay 100mA RCD with a stated Im of 1000A. Upstream DNO 80A 1361 2B fuse. 
    Ipf is circa 2KA on both LtoN and LtoE. 
    My understanding of the IM value is that it relates to current in the live conductors and where a 100A RCD is used the upstream fuse should be one step down, in this case 80A. 
    There is no mention of the IdeltaM value on the device. Any thoughts?

Reply
  • in reply to lyledunn

    Not sure if you can make this out on this single phase installation. The Device is a 100A time delay 100mA RCD with a stated Im of 1000A. Upstream DNO 80A 1361 2B fuse. 
    Ipf is circa 2KA on both LtoN and LtoE. 
    My understanding of the IM value is that it relates to current in the live conductors and where a 100A RCD is used the upstream fuse should be one step down, in this case 80A. 
    There is no mention of the IdeltaM value on the device. Any thoughts?

Children
No Data

Community Rules & Guidelines