Sockets on different phases

[Mark6098]

2 sockets on dado trunking within half a metre of each other, would you agree on warning notices for potential 400v?

 

[spark 68]

The regs used to require sockets on different phases in the same room (not domestic) to have more than 2m between them. Equiment on different phases within reach of each other had to be labled but this was removed I think in the 17th.

As of 17th AMD1

 

[Zebra Stripe]

What happened to us all ?? growing up? really??? did we all just forget what was important to us?? or am I drunk?

 

[Marvo]

I think you need to log off, go grab some of your old vinyls, give them a spin and crack open another beer

 

[Zebra Stripe]

Oh dear I could take that the wrong way......Hey I can almost do two things at once, Im still listening to good morning Britian (and doing that well) and typing at the same time (although badly).....try aztec camera good morning britian live slow version on you tube...wonderfull lyrics

 

[Engineer54]

I'd say that any chance the phases could ever come together to present a 400v hazard would involve grievous misuse of the installation and you can never prevent this type of event. I wouldn't label the sockets, but hey, I'm not in the UK so I don't know if your regs require it in black and white.

For some reason or another the UK has grown a sort of love affair with labels on electrical installations. To the point of virtually covering the whole CU with the bloody things.

BTW agree with you, never seen the need to plonk warning notices on socket outlets spread over 3 phases. Always did use the old red, yellow, blue phase colours for easy identification though, now just an appropriate bit of heat shrink coloured tube.

 

[i=p/u]

If you can't work it out you deserve a shook for playing with.....

 

[Hawkmoon]

Thanks for your reply, yes I think your right, the only issue I see is the average joe blogs seeing 400v next to a socket and worrying about using it.

I would not use it for this reason.

A 400V warning with arrows pointing to sockets will mislead your average user into thinking they are 400V sockets!)

 

[GMES]

The only reason in my mind to use them is, if you have got sockets fed from more than one circuit in the same trunking, then there is always the chance that someone can isolate the 1st circuit and then presume that the rest are also dead and go and attempt to work on the energised circuit. I know you should test 1st but it could happen, maybe late on a Friday afternoon rushing to get home and complacency creeps in next thing you know flash bang wallop.

 

[ian.settle1]

As already said the requirement for labelling that there was 400v between 2 sockets that could be touched at the same time was removed fom the regs in the 17th edition

 

[Darkwood]

Reg 514.10.1 17th edition Red Book!

As others have said this regulation required a warning notice between sockets within reach if they were across different phases giving a nominal voltage of 400v between.

This was amended in the Green Book and without checking i believe it was the term nominal voltage was addressed as it also meant between conductors and as far as i recall they changed the wording to mean 400v ph - earth.

The problem was with the Bgb is that this change wasn't really wasn't made clear enough and myself included kept to fitting the labels past the amendment until i was corrected on this very site... so even i learn things on here

 

[Badged01]

... so even i learn things on here

Thats a good sign! As soon as anyone believes they know everything then one almighty f*ck up is awaiting around the corner ....

 

[GMES]

Reg 514.10.1 17th edition Red Book!

As others have said this regulation required a warning notice between sockets within reach if they were across different phases giving a nominal voltage of 400v between.

This was amended in the Green Book and without checking i believe it was the term nominal voltage was addressed as it also meant between conductors and as far as i recall they changed the wording to mean 400v ph - earth.

The problem was with the Bgb is that this change wasn't really wasn't made clear enough and myself included kept to fitting the labels past the amendment until i was corrected on this very site... so even i learn things on here

Don't ya just love modesty :jester:

 

[plugsandsparks]

So basically this reg has changed VERY recently. OK. Fortunately last time I used my labels was before the change and I have about 5 left. OOO what to do.... With the comments on here sounds like a few sparkies have never used them even when it was in the regs. Funny how something which was considered a no no suddenly changes to "what the hell are we doing, whats the point." Funny old game :blush2:

 

[Hawkmoon]

So basically this reg has changed VERY recently. OK. Fortunately last time I used my labels was before the change and I have about 5 left. OOO what to do.... With the comments on here sounds like a few sparkies have never used them even when it was in the regs. Funny how something which was considered a no no suddenly changes to "what the hell are we doing, whats the point." Funny old game :blush2:

I think, with most, it may be that they have never needed to consider it as they have not installed/come across this issue.

You talk as if it's a common occurrence.

 

[GMES]

As Hawkmoon says it shouldn't really happen imo it's bad design and bad practice .