. .

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. 22-04-2019 #9
    john swift's Avatar
    Lives in merseyside, United Kingdom.
    john swift
    Last Activity: 18-01-2021 Has been a member for 9-10 years. Has a total post count of 257. Received thanks 53 times, giving thanks to others 0 times.
    the devil is going to be in the detail

    when my home was rewired a single RCCB was fitted to protect all circuits
    (these days a split consumer unit would be fitted with 2 RCCB's)

    so if I shorted a light fitting like you then the RCCB will trip depending on
    1) which earthing system has been used
    2) the total load taken by mains powered devices in the house

    with a TN-C system with the earth & neutral combined
    the imbalance the RCCB detects depends on the total load in the house

    with a TN-S system the imbalance the RCCB detects will be a combination of the total load in the house and the volt drop along the neutral in the 3 phase cable buried under the road

    John
    Reply With Quote Reply With Quote

  2. The Following User Says Thank You to john swift For This Useful Post:

« Previous Thread | Next Thread »

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Need help with % probe
    By Sp00kie13 in forum General Discussion
    Replies: 3
    Last Post: 11-10-2018, 03:45 PM
  2. Edge Probe + tool length probe on same input
    By Noplace in forum General Electronics
    Replies: 1
    Last Post: 18-06-2016, 11:12 AM
  3. Spindle grounding
    By eurikain in forum General Electronics
    Replies: 13
    Last Post: 30-01-2016, 11:36 AM
  4. Grounding help, UCCNC, UC300 and connection loss
    By gabi68 in forum CNCdrive (UC100, UC300ETH)
    Replies: 6
    Last Post: 14-10-2015, 07:42 PM
  5. Laser Machine Grounding/Earthing
    By Want2build1 in forum Laser Machines & Building
    Replies: 31
    Last Post: 09-02-2015, 10:18 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules