Bonding of Water pipes (plastic incomes)

[moose]

Wow!

Bonding was an art form in the day. Curly swirls of pure waste of time.

I myself was apart of it, but I also knew then some things made no sense as you do today. We where the same as you are today.

To say No bonding is necessary is quite silly.

The big issue is what happens when your RCD fails or your RCBO no longer works. What is the next function to help?

I myself always get the basic bonds done and make sure the plumber on site gets me a 6inch Copper in the point of entry. Or whatever they are prepared to function for there pipe size wise.

If unlucky to not speak then you cant bond. Make a note.

Good luck.

 

[DefyG]

a 6inch Copper in the point of entry

But if either side is >22kohms what is the point? Another curly swirl of time and material wasted! RCD failure wont make any difference.

 

[moose]

No curly anymore. makes no sense. What if its not 22. when fail occurs. things change over time. thats what its all about the unexpected occurrence..

 

[DPG]

Wow!

Bonding was an art form in the day. Curly swirls of pure waste of time.

I myself was apart of it, but I also knew then some things made no sense as you do today. We where the same as you are today.

To say No bonding is necessary is quite silly.

The big issue is what happens when your RCD fails or your RCBO no longer works. What is the next function to help?

I myself always get the basic bonds done and make sure the plumber on site gets me a 6inch Copper in the point of entry. Or whatever they are prepared to function for there pipe size wise.

If unlucky to not speak then you cant bond. Make a note.

Good luck.

Don't see the point of adding the 6" piece of copper to a plastic water incomer.

 

[Lucien Nunes]

perhaps it is to guard against Electromagnetic Effects?

It's to increase the chance of actually making contact through the power-coat. Personally I would like to see separate terminals drilled and tapped into the mounting flanges, or at the very least the coating removed and A2 star washers under the lugs, plus a strap to a bared section near the centre of the rail, coated in graphited grease to prevent corrosion.

 

[moose]

I'm seeing a problem with electrician's here.

Why do we need a bond to any item. Lets get rid of all CPC its not needed for anything some nations don't use CPC. so why use it. RCD don't use CPC its a voltage difference.

Do we use it for testing only. Its a copper bit of cable to mean anything.

There is the 19th edition soon it maybe a cost saver.

 

[loz2754]

Moose I'm not sure whether you're trying to wind us up here or not!
A circuit protective conductor is not a bonding conductor and serves a different purpose.
So even if the bonding to water and gas is not needed in a certain situation, the CPCs would still be absolutely an essential part of every circuit.

 

[moose]

Why? RCD do not use cpc

 

[loz2754]

The CPC is there to ensure ADS works in the event of an earth fault.

 

[moose]

I am joking but my question is why

 

[moose]

sertain situation

 

[loz2754]

Because we in the UK work to BS7671 wiring regulations. BS7671 explains what, why and how in parts 4 and 5.

 

[moose]

ADS is Bonding of what exactly water / Gas / Boiler/ etc
so why miss them out because you didn't ask a plumber ?

 

[loz2754]

Actually ADS was formerly know as EEBADS. Earthed equipotential bonding, automatic disconnection of supply. 2 different but related systems.
The bonding is to ensure that all exposed and extraneous conductive parts will rise to the same voltage potential for the duration of an earth fault. ADS ensures that the fault will be disconnected automatically within a specified time.
I'm sure you know all this. Just not sure why you are questioning the way we do things.
Anyway, time for some beauty sleep methinks...

 

[DPG]

ADS is Bonding of what exactly water / Gas / Boiler/ etc
so why miss them out because you didn't ask a plumber ?

I don't think you fully understand the difference between earthing and bonding.