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Dave the spark
Did an EICR in a domestic property, earthing arrangement was a TN-S with a Ze of 0.51 ohms.
There are 2 ring final circuits protected by 32amp 60898 type B mcbs. Both circuits have additional protection from a 30mA RCD.
My Zs readings for the circuits are 1.63 ohms and 1.89 ohms.
My question is, with the additional protection of the RCD would it be acceptable to leave it as is and make a note of the situation? Or can I contact the DNO to ask them to improve the external earth? Other than that I'm not really sure what I can do.
Looking for some advice, rather than snide remarks.
Thanks.
There are 2 ring final circuits protected by 32amp 60898 type B mcbs. Both circuits have additional protection from a 30mA RCD.
My Zs readings for the circuits are 1.63 ohms and 1.89 ohms.
My question is, with the additional protection of the RCD would it be acceptable to leave it as is and make a note of the situation? Or can I contact the DNO to ask them to improve the external earth? Other than that I'm not really sure what I can do.
Looking for some advice, rather than snide remarks.
Thanks.