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And how about this, as a great description of how lighting circuits are wired, what's present at ceiling roses, clear information about how switch drop cables contain blacks/blues which are not neutrals, and the truly excellent explanation of 2- and 3-way etc switching.
http://www.simplifydiy.com/electrical/domestic-electrics/electrical-circuits#Lighting circuits
Seriously, you have to wonder what idiot decided to put all that effort into creating a site which is utterly useless.
http://www.simplifydiy.com/electrical/domestic-electrics/electrical-circuits#Lighting circuits
Seriously, you have to wonder what idiot decided to put all that effort into creating a site which is utterly useless.
I see your point BAS! Fantastic site, NOT!.
Back to the OP
The changes to the colour identification of conductors in fixed wiring were introduced, amongst other things, by Amendment No 2: 2004 to BS 7671: 2001 issued on 31 March 2004.
The new colours being the European harmonised colours. Installations commencing on site after 31 March 2006 are to comply with Section 514 and, as appropriate, cores are to identified with the harmonised colours. Installations commencing on site before 1 April 2006 may be installed in accordance with Amendment No. 2: 2004 or Amendment No 1: 2002; that is they may use the harmonized colours or the old colours but NOT both.
In essence then the installation does not comply with BS7671 (not statutory) but this does not make it unsafe.
(16th edition) reg 514-04-01 and table 51 states that neutral shall be blue and these will be black. On this basis the EIC should have the cable colours noted as a departure.
There is equivalent wording in 17th edition (514ish).
A mixed wiring colour warning notice should be posted on the CU if there are also blue/brown core colours anywhere.
Is there an EIC, what does it say?
Back to the OP
The changes to the colour identification of conductors in fixed wiring were introduced, amongst other things, by Amendment No 2: 2004 to BS 7671: 2001 issued on 31 March 2004.
The new colours being the European harmonised colours. Installations commencing on site after 31 March 2006 are to comply with Section 514 and, as appropriate, cores are to identified with the harmonised colours. Installations commencing on site before 1 April 2006 may be installed in accordance with Amendment No. 2: 2004 or Amendment No 1: 2002; that is they may use the harmonized colours or the old colours but NOT both.
In essence then the installation does not comply with BS7671 (not statutory) but this does not make it unsafe.
(16th edition) reg 514-04-01 and table 51 states that neutral shall be blue and these will be black. On this basis the EIC should have the cable colours noted as a departure.
There is equivalent wording in 17th edition (514ish).
A mixed wiring colour warning notice should be posted on the CU if there are also blue/brown core colours anywhere.
Is there an EIC, what does it say?
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