Advice on regulation 521.5.1

[netblindpaul]

The second line states that the conductor referred to in the first line (l&n&cpc) must only be collectively surrounded by ferromagnetic material as they enter the enclosure, this translated in to English means they must pass through the same hole in a steel enclosure.
View attachment 29569

Correct.

 

[netblindpaul]

That is only the first of three paragraphs which make up that regulation, you can't just use one third of the regulation on its own and ignore the other two thirds

Correct, but the 3rd paragraph states REQUIRED.
When is it REQUIRED.

 

[spadge47]

I cant see how to collectively take main tails and earth all in one though, because the main bonding (water/gas) must have to go through the same holes as the tails

 

[netblindpaul]

The regulation says protective conductor, not circuit protective conductor

We are discussing circuit protective conductors.
This is where this started, and it has not changed, as I have said from the start, where it is REQUIRED.
Now you are trying to change the topic to something else to try to make it look like you were right when you were wrong.

Look the devil is in the detail, the word is REQUIRED, it it's not REQUIRED, then it has to be collectively surrounded by ferrous material.
IF it is required, then it is almost definitely not a cpc, thus not part of the original discussion, end of.

 

[netblindpaul]

I cant see how to collectively take main tails and earth all in one though, because the main bonding (water/gas) must have to go through the same holes as the tails

No because they are not part of the supply circuit supplying the power to the board.
They are BONDING conductors not cpc's.

 

[spadge47]

So are the wylex tail glands with the 2 holes only not be used then?

 

[davesparks]

We are discussing circuit protective conductors.
This is where this started, and it has not changed, as I have said from the start, where it is REQUIRED.
Now you are trying to change the topic to something else to try to make it look like you were right when you were wrong.

Look the devil is in the detail, the word is REQUIRED, it it's not REQUIRED, then it has to be collectively surrounded by ferrous material.
IF it is required, then it is almost definitely not a cpc, thus not part of the original discussion, end of.

The discussion started with an earthing conductor, which is a protective conductor which performs the functions of both cpc and main bond. I was wrong about the question, now despite your unhelpful attitude I have learned that I was wrong and think I can see why the regulation is the way it is.

 

[spadge47]

 

[Leesparkykent]

So are the wylex tail glands with the 2 holes only not be used then?

Use these Wiska TKE/B40 2X25mm+1x16mm Nickel Plated Brass Tail Kit - Edwardes

 

[netblindpaul]

Read and understand the relevant reg.
IF the 3 conductors are part of the same circuit then they must be collectively surrounded by ferrous material, unless they come under the deviation in the 3rd paragraph.
Someone has posted a pic of the book earlier, look at it, read it and understand it, then all will become clear.

 

[davesparks]

Use these Wiska TKE/B40 2X25mm+1x16mm Nickel Plated Brass Tail Kit - Edwardes

Or a regular open grommet or a bush and locknut as electricians have been doing for countless years

 

[netblindpaul]

The discussion started with an earthing conductor, which is a protective conductor which performs the functions of both cpc and main bond. I was wrong about the question, now despite your unhelpful attitude I have learned that I was wrong and think I can see why the regulation is the way it is.

Where did that come from?
Now you have me confused!

 

[spadge47]

Wylex EIU Gland Kit, Moulded For Metal Units, Fitted With RCD Isolators - John Cribb & Sons Ltd, UK Electrical Distributors, Dorset, Hampshire, Wiltshire, Somerset & the Isle of Wight.

 

[Leesparkykent]

Or a regular open grommet or a bush and locknut as electricians have been doing for countless years

Could do put personally I would use the wiska gland in domestic.

 

[andyb]

We are discussing circuit protective conductors.
This is where this started, and it has not changed, as I have said from the start, where it is REQUIRED.

No Paul, this is your post No 24

They don't allow it to enter through a different point, never have.

You slipped the 'required' red herring in later, I assume when you actually read 521.5.1

Why do you keep repeating the word 'required' it's irrelevant. You either can or you can't bring the protective conductor through a separate opening.