Discuss Maximum Disconnection Times in the UK Electrical Forum area at ElectriciansForums.net
Is a low earth impedance necessary on TN-C-S and TN-S?
What exactly did you mean when you asked if it's necessary to test the earth rods on TN systems?
I assumed you meant the earth electrodes at the transformer for the N-E link at source and/or the other TNCS electrodes used along the distributing mains.
Do you have earth rods at the service on a TN-C-S or TN-S system?
No, the regulations dont require this.
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