Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Immersion resistance query

  • 11-04-2017 2:06pm
    #1
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭


    Hi folks, just looking for confirmation that even though the 2 elements on the immersion are showing the correct resistance (approx 16 & 24ohms respectively) that this does not mean the element is necessarily good ? ELCB tripping; stat good.


Comments

  • #2
    Pete67
    Registered Users, Registered Users 2 Posts: 1,257 ✭✭✭Pete67


    It's not necessarily good because the element resistance is in the right ball park. The usual failure mode is leakage to earth which will not necessarily effect the resistance of the elements. It will show up as a earth fault though if you were to disconnect the L and N cables from the immersion terminals and measure the resistance from one terminal to earth using a Megger or insulation tester.


  • #3
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭dodzy


    Pete67 wrote: »
    It's not necessarily good because the element resistance is in the right ball park. The usual failure mode is leakage to earth which will not necessarily effect the resistance of the elements. It will show up as a earth fault though if you were to disconnect the L and N cables from the immersion terminals and measure the resistance from one terminal to earth using a Megger or insulation tester.

    Thanks for confirming my suspicions Pete :)


Advertisement