earthing light fittings

[twitchy]

Hi guys, I've seen advice on the earthing of fittings which has left me wondering. If they are marked as double insulated, is it a good or bad thing to add an earth.

I have two light fittings which are double square marked, but are just a plastic pendant fitting. Thing is they go into a metal fixture to hang the light off and it has no earthing tag apparent. Can I just wire live and nuetral? At moment, I have done just that on a bit of terminal block which I've wrapped in insulating tape and popped into the ceiling. Is this ok or should I pull the floor boards up to add a rose or something. just want to make sure it is safe.

Cheers

 

[Spark123]

If it is a double insulated fitting then it should not be earthed. I don't like the idea of wrapping chock block in insulation tape though, they should be done in a proper enclosure, taking into account any joints need to be accessable for inspection.

 

[RF Lighting]

Normally if you have a double insulated fitting you would take an earth wire to the fitting, but NOT connect it to the fitting.

The earth is provided so that if the fitting were to be replaced with a class 1 fitting in future the earth is already there.

Is your light a standard flex drop like this:

With a metal lamp shade?

 

[twitchy]

The bulb holder is basically standard as per the pic, but there is no top part. It is a glass fly catcher type fitting hanging off chains attached to a flat metal fitting that the wire is threaded through. I have earth to the fitting ands have connected to the block, but it doesn't go to the fitting.

Spark 123, by proper enclosure do you mean floor up and add a box of some sort. Not happy myself with the wrapped block, but don't want to up the flooring if can avoid it.

 

[Spark123]

I'm not a fan of putting things in which can only be accessed by lifting floor boards, is it possible to use one of these: http://www.tlc-direct.co.uk/Products/MTMDLB6.html

 

[twitchy]

Thanks I'll have a look at one of those. Just thinking about how I'll fix it in. Ceiling is old lathe and plaster type, so pain to fix anything substantial into.