Existing Supplementary Bonding

[Midwest]

No the video is explaining how to test pipework to see if they require any supplementary bonding, there are other tests to ascertain that main bonding is up to scratch.

Pete check out one of your other favourites by John Ward.

 

[Pete999]

Hurry up, I've got to go to bed soon, and I don't want to be thinking about this all night!

No nor me, can't sleep very well as it is, That's me done said my piece I believe I am right, good night all.

 

[Strima]

That is not what bs 7671 says on the matter.
It’s the protective device for that particular location

But the test or concern is between exposed conductive parts & extraneous conductive parts in that location?

Having reread the OP I now realise the towel rail is fed from the boiler and not electric.

 

[Ian1981]

Or try reading part 5 of bs 7671 and Gn8 as it’s written in black and white how to verify that pipework has a low enough resistance to ascertain the effectiveness of the supplementary bonding

 

[buzzlightyear]

Hurry up, I've got to go to bed soon, and I don't want to be thinking about this all night!

 

[buzzlightyear]

No nor me, can't sleep very well as it is, That's me done said my piece I believe I am right, good night all.

 

[Ian1981]

reg 415.2.2

"where doubt exists regarding the effectiveness of supplementary equipotential bonding, it shall be confirmed that the resistance R between simulataneously accessible exposed-conductive-parts and extraneous-conductive-parts fufils the following condition:

R less than/equal to 50 V/Ia in a.c systems

Or in the case of an rcd
50v / I delta N

 

[Midwest]

reg 415.2.2

"where doubt exists regarding the effectiveness of supplementary equipotential bonding, it shall be confirmed that the resistance R between simulataneously accessible exposed-conductive-parts and extraneous-conductive-parts fufils the following condition:

R less than/equal to 50 V/Ia in a.c systems

Or in the case of an rcd
50v / I delta N

So towel rad pipe at 0.04ohms, doesn't require local supplementary bonding?

 

[Ian1981]

So towel rad pipe at 0.04ohms, doesn't require local supplementary bonding?

Have you taken parallel paths into account?

 

[Midwest]

That's what I look like in the morning, after ----ing & turning, thinking about electrical stuff. Gonna give it up soon, go work down the garden center, moving green stuff about, and advising Mrs Miggins on what to put in her borders