I have seen this and I dont agree with testing socket to exposed metal as a socket is earthed not bonded....
However I say this but I am undecided on what to really think, spoke to one guy when doing the unit standards and he says its wrong too.
But what does everyone else think ?
I will try read it better later this weekend and see if I agree with it or not
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Doesn't this introduce a risk that we may fail to detect that accessible conductive parts may not be connected to the earth terminal?
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That test is confirmed with the Resistance of earth continuity conductor.
But that test is technically the conductor but we often test the metal class 1 stuff with it too. And the reading as to be of table 8.1.
So earthed is items that carry electricity.
Bonding is items that don't carry electricity.
Fine line stuff this but the article makes sense to have it all at same potential and to verify that.
I like the test but perhaps a voltage check and not 0.2ohm bonding check as voltage proves bonded per say and same potential.
What you all think ?
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Does a geyser have an earthing terminal or is it a bonding terminal ?
Geyser is earthing terminal but we bond the hot and cold pipes.
So generally people bring 2.5mm earth cable to earth the geyser but then they take a lead off to hot and cold taps to bond so not to run extra bonding only cable.
That is how I see it and the train of thought.
In the UK they run separate bodming cables and say one is water, other is gas etc...
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The bonding conductor needs to be minimum 2,5mm, however the earth continuity conductor need not be.Originally Posted by Dylboy
The size of the earth continuity conductor will depend on the cable used to supply the appliance.
So if a geyser is wired with 1,5mm FTE then the ECC will be less than 1,5mm sq.
Now you bond the hot & cold pipes with 2,5mm and bond to the earthing terminal on geyser with 2,5mm.
The ECC is also connected to same earthing terminal on the geyser.
The bonding conductor is now 2,5mm and the ECC is less than 1,5mm.
Acceptable ?
I'm reading 6.13.2.2 and the above situation ticks the boxes.
I suppose one would first have to define "earth continuity conductor system"
What sayeth the other toppies ?
Last edited by Derlyn; 15-Apr-22 at 02:13 PM.
ECC or Earth Continuity Conductor is the part of the earthing or grounding system which joins or bonds together all the metallic parts of an installation network: Conduit, ducts, boxes, metal casing of switches, switch-fuses, distribution boards, regulating and controlling apparatus, exposed metal work of machines and any metal framework on which electrical apparatus are mounted.
I am aware of the difference between an earth continuity conductor and a bonding conductor.
The regulations state that the bonding conductor must be connected to the earth continuity conductor SYSTEM.
I am, however, not 100% sure of where, physically, this connection should be done.
Can it be made to any earth continuity conductor or must it be made directly to the consumer's earthing terminal. Hence my question regarding the definition of the earth continuity conductor SYSTEM.
Ahhh I see what you are saying ! Intresting observation.
I think somewhere it states about earth terminal connections... Will try look later
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