5 core flex to combi

[Toneyz]

@anthonybragg if they want a bond at the gas meter then they better put one there themselves
Its up to us to follow BS7671 and it says within 600mm of entering the building and before any Tees or branches. Obviously this isn’t viable all of the time and common sense should prevail but I certainly won’t be changing the way I bond Gas pipes until BS7671 changes

So why the disagree? The bonding was after the isolation valve where it entered the flat in this case and when I showed him our regs book he didn't take it any further, just pointing out that their regs just stated within 600 of the meter.

 

[MFS Electrical]

So why the disagree? The bonding was after the isolation valve where it entered the flat in this case and when I showed him our regs book he didn't take it any further, just pointing out that their regs just stated within 600 of the meter.

Because it isn’t their responsibility it’s ours we design the installation or install to a designers spec and follow our regs even if the gas pipe ran outside for 10 metres before entering the building as long as there weren’t any tees or branches we would bond within 600mm of it entering the building.

 

[Octopus]

Because it isn’t their responsibility it’s ours we design the installation or install to a designers spec and follow our regs even if the gas pipe ran outside for 10 metres before entering the building as long as there weren’t any tees or branches we would bond within 600mm of it entering the building.

Where practical

 

[davesparks]

It is in their Gas safe regs I had to go through this with a plumber regarding bonding in a 2nd floor flat he showed me his gas regs book

Whatever book he showed you it was not the gas regulations. The gas regulations state no more than that if bonding is not present an electrician should be consulted.
See the gas safety in use regulations which, since it is law, is freely available at legislation.gov.uk

 

[Toneyz]

To be clear I am not disputing what our regs are and agree with the above I was making the point that I was in a similar situation with a plumber regarding what our regs said and it was acceptable to bond the gas where it entered the flat when I showed him a copy of the page he shut up. He had a publication that was produced by Gas safe with just the one line regarding the 600mm from the meter his regs was not fully in line with ours.

 

[bigspark17]

What exacly did he show you? If it was a guidance book then it is not regs, yes they have boxes to tick to day its present but the responsibility of the bond is the electricians alone

 

[telectrix]

the whole point of bonding is to reduce the potential of electric shocks to persons. it is not to prevent a gas explosion or a flood, so tell the wet-pants to stick his head down the toilet where he'll be more at home with what he's competent with.

 

[Deleted account]

Clarification

It's been a couple of years since I started the gas course and I didn't finish it as I left the company I was working for, but....

The below is quoted from the Viper book page L26 (k17&k18)

The electrical bonding clamp should be attached not more than 600mm away from meter( internal meters). For meters located in outside meter boxes the bonding should be inside the building as near as practical to the point of entry of the installation pipe.

 

[Toneyz]

They may well have revised the book since. The book he showed me had Gas Safe Regulations on it. I was there as he was not going to sign off the gas cert as the bonding was not within 600mm of the meter on the ground floor it was as entry to the flat had to get my regs book out and convince him which took some doing. As for the disagrees I can only comment on what he showed me regarding his regs.

 

[Deleted account]

There are two compliant books acceptable to use in gas. One is the the viper book that I used, The other is the corgi one I think. It was a yellow book last time I saw one.
The viper book is better because it's in a binder that you can change pages when the relevant regs change, saving a fortune over time.

 

[Toneyz]

The viper book is better because it's in a binder that you can change pages when the relevant regs change, saving a fortune over time.

IET/BS take note.

 

[solarsavings]

he was not going to sign off the gas cert
had to get my regs book out and convince him which took some doing.

The gas certificate is a record of what was found on a given day. He should have made a note of the lack of bonding, stuck a sticker near the meter stating

Most types of electrical installations are fitted with main equipotential bonding which is connected to the installations earth terminal. blah blah blah
I am required by the gas (installation and use) regulations, to inform you that any necessary equipotential bonding work should be carried out by a competent person. Blah blah blah

issue the cert and do one.

 

[Dave OCD]

I think I've seen the requirement for a seperate flex for the 'volt free' switching pair in Ariston M.I.s , it's to avoid any induced voltage issues I think.

 

[Baddegg]

I’m doing 2/3 Worcester’s a week at the moment and none of the current models need a volt free roomstat, they are all 240V for standard controls.

I wonder if the water clown is getting this confused with using the Ls terminal to supply external controls.

Water clown ha ha ha ha

 

[AJshep]

I met a plumber the other day who insisted that the boiler supply should be via a plug now.
He said he had been told when updating his gas safe, he said the lecturer mentioned it because some "compentent people" cant wire boilers correctly and if its on a plug the the electrically untrained plumbers can pyhsically unplug it and achieve complete isolation when working on it.

 

[davesparks]

I met a plumber the other day who insisted that the boiler supply should be via a plug now.

Earlier this year I put a boiler on a plug and had the plumber phone me a few weeks later because someone else had seen it and told the customer it was illegal to put it on a plug and it must be via an sfcu.

 

[markythesparky]

Need to wire a supply to combi with LNE connections, and 2 volt free cores for room stat.
I don't really see why I can't use 5 core flex for this, as all cores insulated to 500v, but plumber insisting they need to be in separate flexes...any thoughts?

Cheers

Rollocks!

As you said, he’s a Plumber, not an electrician.

 

[GeorgeCooke]

Some manufacturers instructions......can’t remember off the top of my head though, state a separate cable should be used for the volt 3 connections.

Manufacturers instructions are guidance only and don't have to be followed, especially when they are wrong.

 

[Leesparkykent]

Manufacturers instructions are guidance only and don't have to be followed, especially when they are wrong.

Cool

 

[Bellendian]

Turns out the whole thing was bollo!
He was reading stat manual stating capable of volt free, but missed the bit about 230v being fine, so wired using ls and lr as usual and all is well!
Still love the term 'water clown' though!