5 core flex to combi

[Bellendian]

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

 

[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!

 

[Taylortwocities]

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

George/Winston1 !

I have found you out....it IS you from the other forum.

 

[DPG]

I think he's got about three standard phrases that he uses.

 

[johnduffell]

This seems to have digressed onto bonding, but regarding the original question about band i and ii conductors in the same cable this tells you all you need to know
The installation of Band I and Band II circuits - https://www.voltimum.co.uk/articles/installation-band-i-and-band-ii-circuits