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 8 replies
  • Subscribers 37 subscribers
  • Views 1504 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

Very low Ra reading disappears when connected back up.

aligarjon

Hi Guys

I had some very strange readings today when doing an EICR.   Property is a semi detached cottage in a very rural location. Over head supply. 

The first thing i noticed when i arrived was a piece of angle iron driven into the ground outside the front door with a corroded 10mm earth cable bolted to it exposed for all to see.

The consumer unit is located just inside the front door in a cupboard and i can see the earth cable going out through the door frame.  I disconnected it at the CU and got an Ra reading of just over 2 ohms so i am obviously amazed. I reconnect it to the CU to get a PFC reading etc and the Zdb is nearly 300ohms with the original earth reconnected. I disconnected it again and got just over 2 ohms again. Reconnected it and got around 300ohms.  

This is a new one on me, does anyone know what could be going on ?

Cheers  Gary

Parents
  • 0

    Thank you for the replies.  I didn't think to do a 2 wire test, I have a newish tester to me (KT66DL) which does have that function.   I have coded it as a C2 for now ( absence of a reliable and effective means of earthing)  along with a few others so no doubt will have to go back there at some point.

    Gary

  • 0 in reply to aligarjon

    An all singing all dancing tester.

    KT66DL Product Introduction - Kewtech (kewtechcorp.com)

    Z.

Reply Children
No Data

Community Rules & Guidelines