SWA Cable Conductor Colours and Identifying them Using the On Site Guide Appendix K BS7671 Part 1
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- čas přidán 23. 05. 2020
- In this lesson we look at the conductor colours of steel wire armour cable (SWA cable) and link it to appendix K of the On-Site Guide (BS 7671). We see the change in conductor colours form pre 2004 and post 2004 in the UK.
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Great lesson , going above and beyond as usual Gaz thank you 👍
I remember going through this, it seems so simple now, but at the time it was tough! Good job all!
Really enjoying these videos Gaz, keep them coming. 👍
Keep this lockdown going.
Love these videos..
🌟🌟🌟🌟🌟
Thanks for the support l. Part 2 next Sunday 👍
Great Video . Thanks for the great info
👍🏻
thank you
Where does it state that the grey on a single phase circuit swa needs to be the neutral ?? Also i can't remember being aloud to swig a beer in class , is this a new thing?
Its to avoid confusion between the two different colour codes.
"Black is no longer neutral and must be earth", this is the reason why grey should be neutral.
Edit: This is especially evident in installations that have two different versions of BS7671. Where old colours and new colours are present.
You should do this if you have a single-phase circuit fed with a 3 core armoured with Brown, Black, Grey cores.
Brown - Line
Black - Earth
Grey - Neutral
@@TheTomBombGaming where does it say this in the osg or regs book?
@@TheTomBombGaming my understanding has always been that you can use either black or grey as long as you sleeve it with blue.
I don't think it is in the regs. It was an ECA/NICEIC thing from years ago 'De-neutralising black'
“De-Neutralising“ Black
Under the new identification colours for fixed
wiring introduced by Amendment 2 to BS 7671,
black is now used to identify a phase conductor,
not a neutral conductor, in new installation work.
In all single-phase applications, it would be
preferably to use cables marked for such use,
which is with brown (L), blue (N) and green-and-yellow (E) cores.
However, where three-core
cables marked in the new three-phase colours are
used for single-phase applications, appropriate
overmarking at terminations must be used and it
is proposed that, as a convention, the black core
is used for the protective conductor, the brown for
the phase conductor and the grey for the neutral.
This convention is intended to break the
association between black and neutral. It would
mean that the black core would normally be
overmarked green-and-yell or E and the grey core
overmarked blue or N. The brown core would not
require additional marking.
Source: ECA Circular 86/2004
That where it comes from its not a regs or osg specific thing
@@154electrician Yeah as long as they are sleeved or reidentified it should be fine. ECA/NICEIC say otherwise just to avoid confusion on older installations.
Can we get in on these, pretty pretty please 😜 seeing these is making me WANT to get back to college and carry on my 2365 L2 😂
Dex Whitmore we mostly drink and take the mickey out of each other 🤣🙄
GSH Electrical well if you're getting the rounds in, even more incentive to get involved 😂
When we changed to harmonised colour that caused a world of confusion at the time very dangerous..
the answer would be a compression gland ?
Now we are out of Europe we can go back to red yellow blue!
😁👍
r u in trafford college
Ghost_shadow hi I worked out of Tresham College in Northamptonshire for 19 years 🦾