label

[Spark123]

In that case U could be expected to be greater than 230v

Yeah, but not Uo (TN system) so reading between the lines although the label is not required as a Uo of 230v has not been exceeded, there are certain circumstances where it is best practice to go over and above the regs and fit the labels.

 

[GaryMo]

This 'Best Practice Guide' has a lot to answer for.
Wonder if it'll go to print before the 17th On-Site Guide?

In any case I was just correcting a post claiming that 400v stickers were needed and the installer was responsible for such.

 

[Spark123]

Oddly enough, the On Site Guide (p37) says something different to BS7671 on this just to confuse matters.

 

[bigalert]

So just to clear it up. Although it is a good idea to use common sense and install the warning sticker so that anyone working on the circuit/fixture is made instantly aware and therfore making the installation safer , we won't do it unless someone tells us to explicitly in writing and we have a specific reg in front of us. Thats sad

I'll stick with common sense.

 

[GaryMo]

So it does

Isn't it good having continuity? Still, it's just a 'guide' but even so it should follow BS7671 accurately.

 

[333rocky333]

Do you work on many installations where Uo exceeds 230v?
I haven't yet.

Mostly shops and commercial although the supply is 4oov most of the work is single phase and as said hardly any of the boards are labeled 400v

 

[GaryMo]

So just to clear it up. Although it is a good idea to use common sense and install the warning sticker so that anyone working on the circuit/fixture is made instantly aware and therfore making the installation safer , we won't do it unless someone tells us to explicitly in writing and we have a specific reg in front of us. Thats sad

I'll stick with common sense.

LOL

I was only pointing it out for those who can't be bothered to check!

 

[GaryMo]

Do you work on many installations where Uo exceeds 230v?
I haven't yet.

Mostly shops and commercial although the supply is 4oov most of the work is single phase and as said hardly any of the boards are labeled 400v

You do know Uo is nominal phase voltage to earth don't you? Not phase to phase.

 

[333rocky333]

Though 2 sockets close by to each other off different phases doesn't strike me as being the best of design.

A " Warning 4oov between " label is made for this purpose "

 

[GaryMo]

Though 2 sockets close by to each other off different phases doesn't strike me as being the best of design.

A " Warning 4oov between " label is made for this purpose "

But not required as per BS7671.

 

[333rocky333]

You do know Uo is nominal phase voltage to earth don't you? Not phase to phase.

Oh dear
just fell in
WE do all that still with the 400v because IT was in the 15th regs.
It is as you say changed to Uo in the 16th
Old habits
I will now be slaughtered

 

[Spark123]

Nah, just tell them what it says in the on site guide

 

[GaryMo]

Not at all m8.
Blame it on the Stella, that's my excuse and I'm sticking to it!

 

[GaryMo]

Nah, just tell them what it says in the on site guide

Oi

 

[333rocky333]

Nah, just tell them what it says in the on site guide

Your right
So where would you find a Uo of over 230 volt then