New Member with an EICR question on max Ze reading

[Deleted member 72666]

To the op, have you quoted the dno's maximum typical value of 0.8Ω for tn-s or is that a measured value?

 

[Baker1988]

Can't you go and do a Ze your self as it might be that they just measured or wrote down incorrectly. As stated in a previous post what is wrote down for the prospective fault current?

 

[Madocks]

Welcome to the forum

 

[Madocks]

Welcome to the forum

 

[buzzlightyear]

Might start calling you Lofty.

lovely boy!

 

[johnduffell]

Strange to not comment on it, but if all circuits have rcd protection, is that reading even a problem? Although if I measured that value then I'd still get the dno out for an unreliable earth, in case it gets worse.

 

[Wilko]

Strange to not comment on it, but if all circuits have rcd protection, is that reading even a problem? Although if I measured that value then I'd still get the dno out for an unreliable earth, in case it gets worse.

Hi - the 2 Ohms may be ok if the installation is designed for that, as you would for a TT. But in summary - ask owner to call DNO and request a safety inspection (free) as they've been told by an Electrician that it may be unsafe. My concern is it may indicate a deteriorating condition and Client could end up with no earth. Apologies to all who've already said this on the thread, or if you've already established it's 0.2 Ohms . Must have coffee ...

 

[telectrix]

Hi - the 2 Ohms may be ok if the installation is designed for that, as you would for a TT. But in summary - ask owner to call DNO and request a safety inspection (free) as they've been told by an Electrician that it may be unsafe. My concern is it may indicate a deteriorating condition and Client could end up with no earth. Apologies to all who've already said this on the thread, or if you've already established it's 0.2 Ohms . Must have coffee ...

yeah, a bit early for beer. just add a splash of scotch to the coffee.