Major works notification

[Chector]

just to add....If its solid green it needs replacing though.

Green and yellow. I'm going back to replace them.

 

[123]

just to add....If its solid green it needs replacing though.

Why does it?

 

[uksparks]

Correct me if I'm wrong but I was under the impression that if it was solid green you have to replace it as its not even a current colour let alone size.

 

[Chector]

Thank you all for your replies. They are all very helpful. I want to do a professional job and feel I have cocked up here. The responses kind of confirm that. Lesson learnt. Thanks for the advice.

In my defence I ran out of time to deal with this problem and took the decision to leave it as it was already in place for sometime. Instead I dealt with the un-fused spur to the garage supplying sockets and lights alternately. The lighting circuit used a 3 terminal junction box when a four terminal was required. The obvious solution was not to buy the right junction box, but to cut the earth out. So two fused spurs later and new wire laid and the garage was safe. I'll have to go back and sort out the bonding conductors.

 

[Dave OCD]

Good point, that's a bit like saying all red and black conductors must be replaced.:smile5:

 

[uksparks]

Why does it?

Regulation 514.4.5 in the BYB. Look it up.

514.4.5: The single colour green shall not be used.

 

[Dave OCD]

But isn't that talking about NEW works ?

 

[uksparks]

How i read it is that I am updating the consumer unit and ensuring the earthing is up to standard.

I dont know about you but I know what the NICEIC bloke would say if I showed him a job where I had left the green bonding in place on a CU change.

 

[uksparks]

Good point, that's a bit like saying all red and black conductors must be replaced.:smile5:

It doesn't say in the BYB that it should not be used, what it says is you need to identify the conductors, but the earthing and bonding, it specifically states green shall not be used.

 

[uksparks]

Personally I wouldn't leave a solid green conductor in place on the bonding, ok I know it may be in the back boxes etc on the CPC and the like. I don't know, but I wouldn't be too happy leaving it.

 

[Chector]

With reference to a post you made just 5 days ago, I can only assume this is the same property:

"I would value peoples opinions the earthing arrangement I cam across yesterday. Water and Gas main protective bonding conductors were not installed at the consumer unit, but were coned to the main earthing terminal. The MET was connected to the distributors earth and one conductor ran from the MET to the consumer unit. The resistance from the consumer unit to the gas and water were fine at 0.01 Ohms. But shouldn't the conductors be wired into the consumer unit? They all need changing anyway as they were all 6mm."

http://www.electriciansforums.co.uk...trical-forum/102345-earthing-arrangement.html

So based on this, you knew they were on the small side before you started the work, so why have you carried on and not updated them?

That's not quite the case. I discovered the problem as I was replacing the consumer unit. I think I should have checked for this problem at the time of quoting and included it in the quote. However the situation in the garage was far more dangerous, so I spent my time on that. I'll go back and sort the bonding asap. Thanks for your help

 

[123]

Correct me if I'm wrong but I was under the impression that if it was solid green you have to replace it as its not even a current colour let alone size.

So you rewire the red and black also? :|

 

[SteveH40]

Would be great to live in a perfect world and look what happened in the 16th edition regs , surprised we didn't end up bonding bloody door handle and hinges! 18th edition will probably say earthing is a myth, go back to 2 core twisted cables and use the pendant as a socket for your iron lol

 

[Dave OCD]

I agree it would be good practice to replace it - most definitely the main earthing conductor, but long runs that test out fine and would cost a lot in time and money to replace- maybe just mark with green/yellow where accessible and visible, after all what else could a green single core be ?

 

[uksparks]

I don't know about you but it doesn't sound right sleaving solid green with green and yellow, that's like over sleaving black and red...

 

[Dave OCD]

Well what do you do with a three core and CPC then to identify switched lives or even neutrals properly ?:smile5:

 

[uksparks]

We are not talking about that, we are talking about over sleaving a conductor that's against regulation.

 

[Dave OCD]

I give up.

 

[uksparks]

But isn't that talking about NEW works ?

BS7671 is to be used for ALL works new or old.

Petsonally id say that if you are changing the CU and testing and reconnecting and energising circuits, you are knowingly reconnecting and using a green conductor. I know ither parts of the installation may have green, but you are not physically touching any of that, that's all hidden.

i may be totally wrong but I won't reconnect a solid green conductor.

 

[GB.Kayak]

We are not talking about that, we are talking about over sleaving a conductor that's against regulation.

... against regulation due the colour of its insulation ... BS 7671 is not retrospective so unless the conductor is not up to the job in terms of its function then it's replacement is not an issue of necessity!