Discuss Is there any point testing earth loop impedance in the Australia area at ElectriciansForums.net
incorrect an MCB is an overload device and will operate
In a tt system? The earth spike is Reading greater than 50 ohms so clearly the mcbs won't make their rated disconnection times. Waste of time?
Not really, as you will still be showing that you've got an earth all through the circuit...
not very familiar with tt systems but obviously the loop-impedance is way too high for any automatic disconnection of earth faults by mcbs
so rcds will be required
how do we measure the earth rod and which method?
When using the spike method on an existing installation, how are you meant to know how long the rod is without pulling it out of the ground and probably ruining what could have been a good reading?
Now how did I know you'd be all over this thread like a rash Eng
50M rod's gonna take some banging in Daz
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