installing new emg. lights in a hospitil. was built 1999-2003 all circuits are wired as per phase colour (red yellow blue black) now we are connecting on to local circuits using new colours (brown gray black blue ) so when it comes to the blue phase and we connect in we have blue feed and blue neutral now which one do you id to conform with 17th edition?
phase id
- Thread starter milo
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how about
L1
L2
L3
N
no worries,
---------- Post Auto-Merged at 17:22 ---------- Previous post was made at 17:21 ----------
but if you do want to colour code then it should be to the 17th edition,
ie Br Blk Gry Blu as that is the current standard colours.
L1
L2
L3
N
no worries,
---------- Post Auto-Merged at 17:22 ---------- Previous post was made at 17:21 ----------
but if you do want to colour code then it should be to the 17th edition,
ie Br Blk Gry Blu as that is the current standard colours.
Ohh!
Good one!
Me I would use numbers & letters probably fitting N's to the neutrals & L3 to the lives.
I may also be tempted to put a small dual colours sticker inside the fitting/jb etc & on the outside a warning of some sort if possible.
Wrong perhaps I know but I would be tempted to wrap the L3 blue with red tape or fit red sleeving, or possibly even brown or grey maybe the best!
Probably should be new phase colours.
I recently fitted a large 3ph db to a premises wired in old colours the incomer was ryb, all the outgoers were br, bl, gr, look it even takes more to type!
I marked the incomer with the new phase colours as well as stickering up in & out.
Good one!
Me I would use numbers & letters probably fitting N's to the neutrals & L3 to the lives.
I may also be tempted to put a small dual colours sticker inside the fitting/jb etc & on the outside a warning of some sort if possible.
Wrong perhaps I know but I would be tempted to wrap the L3 blue with red tape or fit red sleeving, or possibly even brown or grey maybe the best!
Probably should be new phase colours.
I recently fitted a large 3ph db to a premises wired in old colours the incomer was ryb, all the outgoers were br, bl, gr, look it even takes more to type!
I marked the incomer with the new phase colours as well as stickering up in & out.
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its
Brown
Black
Grey
in that order,
great change of colours, isnt it. make a live colour a neutral, and a neutral a live.
Is'nt the whole thing so bloody ridiculas ??? The most stupid thing ever to be foisted upon us . Still be causing confusion in 100 yrs . Bloody stupid bunch of desk flying , paper shuffling, collar and tie wearing, wazocks !!!
I though that at the joint where you change colours that you had to mark up the old colours IAW the new colours and also put a mixed colours sticker on the enclosure
you can do whatever the customer wants,
just get them to sign the design part and note the deviation from the current regs in the box.!
a N conductor coloured black is NOT to current regs so unless you make it a deviation then its not allowed,
and it could be seen as NOT leaving the installation safe as anyone following you would rightly expect wiring done in 2011 to be to current standards and colourings.
only an opinion mind. :|
Doc Hudson
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This exact question is covered by Table 7A as Sparkytim has already pointed out.
Doc H.
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So if you were using a 3 core SWA cable on a single phase install would you put sleaving over the grey and black for the Neutral and earth id or would you mark the conductors L1, N, E,?
Must admit I am not a big fan of the new colours.
Cheers Steve
Must admit I am not a big fan of the new colours.
Cheers Steve
mark them with coloured sleeving
Single phase can be marked L, N & E or brown,blue, green/yellow, but 3 phase should be L1, L2, L3, N & E . To mark a new neutral blue with a black marker is wrong
and remember, using new colours for single phase the black is earth and the grey is neutral.
sleeved appropriately of course
sleeved appropriately of course
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