Ra For earth rod

[Barker]

Hello, can any oy you Brighter Sparks tell me how to get the Ra measurement for an earth rod using a Meggar 1552.

Cheers Alex

 

[mechelec]

Switch off all supplies via main switch at DB, remove main earth (to rod) at DB and do a loop test between the live supply side of the db and main earth (to rod) this will give you a Ra value for the rod.
I hope this makes sense