Discuss Main bonding questions in the UK Electrical Forum area at ElectriciansForums.net
The earthed metal would surely be bonded if extraneous, no?Probably a basic question
In an installation with pipework or cable ladder that's not extraneous as such but is connected to earthed metal
What's the logic for not main bonding it as the metalwork can surely introduce a potential in a fault situation?
It's either extraneous or it isn't.Probably a basic question
In an installation with pipework or cable ladder that's not extraneous as such but is connected to earthed metal
What's the logic for not main bonding it as the metalwork can surely introduce a potential in a fault situation?
By earthed metal, I assume you mean metal that is connected to the MET?Probably a basic question
In an installation with pipework or cable ladder that's not extraneous as such but is connected to earthed metal
What's the logic for not main bonding it as the metalwork can surely introduce a potential in a fault situation?
By earthed metal, I assume you mean metal that is connected to the MET?
For example: plastic incoming supply pipework, metal pipework to boiler, boiler connected to MET via CPC.
The metal pipework is not an extraneous part, so not introducing an extraneous potential. It is however connected to the MET via the boiler and CPC. All that bonding would do is connect it to the MET again, achieving the same thing
If metalwork is directly connected to earthed metal, what would be the point?Probably a basic question
In an installation with pipework or cable ladder that's not extraneous as such but is connected to earthed metal
What's the logic for not main bonding it as the metalwork can surely introduce a potential in a fault situation?
I'll say the same as I did in #3If metalwork is directly connected to earthed metal, what would be the point?
Am I missing something, here?
I believe so. Here's how I see it:Will it achieve the same result in the event of a fault?
The CPC connected to boiler or a main vond connected to the metalwork that's not extraneous
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