Supplementary bonding

[David Prosser]

What's on the metal plinth, is it a PC pump ?

 

[M-Ty]

I wasn't taught about 'path of least resistance', I was taught the science of electricity, ohms law etc.
Electricity does not 'take the path of least resistance' it splits between all available paths and the current in each path is proportional to the resistance.

It is actually directly proportional to the admittance. Or inversely proportional to the resistance if the reactance is negligible.

 

[Jako13!]

Can you do an Earth loop test to the metal work to help determine?

 

[Mark Wright]

@OP Chris Kitcher has some good stuff on determining if a metallic part is extraneous.

I wasn't taught about 'path of least resistance', I was taught the science of electricity, ohms law etc.
Electricity does not 'take the path of least resistance' it splits between all available paths and the current in each path is proportional to the resistance.

Yes unfortunately touch voltage isn't really taught try reading some electrical engineering books I can provide some links if you want.
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and this is wrong if you were wet standing bare foot on the ground in direct contact with mass of earth you would be getting a nasty/fatal shock you would be the path of least resistance to earth.

 

[davesparks]

@OP Chris Kitcher has some good stuff on determining if a metallic part is extraneous.


Yes unfortunately touch voltage isn't really taught try reading some electrical engineering books I can provide some links if you want.
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and this is wrong if you were wet standing bare foot on the ground in direct contact with mass of earth you would be getting a nasty/fatal shock you would be the path of least resistance to earth.

You are missing my point entirely.

My point is that "electricity follows the path of least resistance" is a nonsense, electricity follows all available paths. The division of current between available paths is defined by specific laws of science.

Yes, we can all come up with abstract scenarios where a fatal shock is guarateed regardless of protective measures put in place.

Yes of course If you stand naked in the rain on ground with a bonded metal pipe buried 25mm below the surface of the conductive clay you are standing on whilst poking a wire coat hanger into the L1 socket of a 125A TPN socket you will probably die.

 

[ipf]

My point is that "electricity follows the path of least resistance" is a nonsense, electricity follows all available paths.
Yes of course If you stand naked in the rain on ground with a bonded metal pipe buried 25mm below the surface of the conductive clay you are standing on whilst poking a wire coat hanger into the L1 socket of a 125A TPN socket you will probably die.

....... whilst peeing in a puddle?

 

[Mark Wright]

After Dave's post you know he's quite a argumentative chap I did a little googling and it seems saying current takes the path of least resistance does get some peoples backs up and it's perhaps better to say More current will flow in the path of least resistance or even better more current will flow in the path of least impedance, I think it's a bit picky because I don't think anyone is assuming all current will flow down one path but the majority.
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however saying Current takes the path of least resistance when talking about earthing something metal might seem like saying all the current will take that path, I concede to that.

 

[Mike Johnson]

I have Aspergers too, but try to keep it in check.