Class I light fittings, no Earth, what would you do?

[spark 68]

If the fittings are ClassI they're double insulated, do they really need a cpc connection if they're not in a zone?

Hi Marvo,

Class I fittings are metallic and require an earth/CPC, class II fittings are double insulated.

 

[Marvo]

Oops, misread. I was thinking about something else. Thanks Spark

I've come across downlght fittings that were originally MR16 SELV and don't have a cpc connection point. Then they've been converted to a GU type lamp at a later time which renders them non compliant with the regs.

 

[Jimmy Boy]

Oh and the other thing that has just occurred to me, if there is no cpc at the lights it means there will be no cpc at the light switches,and if you (Paul) are going to now convert this lighting circuit to an 'Earthed' circuit you will need to provide a cpc at every light switch as the regs state this.
J

 

[oldtimer]

if you can run a seperate cpc to the light fitting then you can rewire it and also agree with above check the light switches out.

One other point I take it if you earth the class 1 fittings how does that fit with the no earth at lights sticker on the CU or in other words tell him to replace with classII or rewire because anything else looks like a bodge

 

[Silly Sausage]

I've come across downlght fittings that were originally MR16 SELV and don't have a cpc connection point. Then they've been converted to a GU type lamp at a later time which renders them non compliant with the regs.

I converted some SELV to 230V d/ls at home with a piece of 4mil from the connector block to the casing.
Whether they are compliant or otherwise, I've no idea! In my own house so who cares... :shades_smile:

 

[dim_bulb]

regarding post 18 - wont need to take an earth to the switches if they are plastic or are they metal switches?

 

[malcolmsanford]

DB no to reg 412.2.3.2 you still need to supply a cpc to each point even if they are class II fittings

 

[Tonkatoy27]

Oops, misread. I was thinking about something else. Thanks Spark

I've come across downlght fittings that were originally MR16 SELV and don't have a cpc connection point. Then they've been converted to a GU type lamp at a later time which renders them non compliant with the regs.

I've seen plenty of GU10 downlighters with terminals for cpc but no link to the metal casing. Classed as double insulated.

 

[rich.250]

Ive had a similar one, and not wanting remedial work done, I came to the outcome of class 2 fittings and a warning sticker on the db....
In the situation it was the only outcome.......

 

[Des 56]

For anyone reading this thread who hasn't seen it before, here is a useful guide from the ESC on the subject

http://www.esc.org.uk/fileadmin/user_upload/documents/industry/best_practice/BPG1v2_web.pdf

 

[dim_bulb]

Post 22 reg.412.1.3 if its not used as sole protective measure ie use of rcd would it satisfy reg 412.2.3.2?

 

[malcolmsanford]

DM I'm not sure if your telling me but asking me. Again no even with RCD protection you still can not omit a CPC at every termination or point in an installation, and reg 531.2.5 tells us this

 

[rich.250]

I see exactly your point! My problem was they wouldn't pay to do the remedials.....
Is this why the likes of the nic make the missing CPC stickers??
Otherwise I can't see the point!

 

[dim_bulb]

I was only wondering Malcolm, i certainly wasn't telling you

 

[Engineer54]

Post 22 reg.412.1.3 if its not used as sole protective measure ie use of rcd would it satisfy reg 412.2.3.2?

RCD's are still classed as additional protection in all TN installations, and should never be used as the sole means of protection or to get over, or out of an installation problem, such as no CPC in lighting circuits etc....