Published: 22 May 2014
Category: Q&A
Miltos asks this question, which concerns the possible earthing arrangement for a recessed downlight with GU10 230V LED lamp. It has been answered by Philips (Theme – Lighting):
This Q & A is one of thousands posted in our Technical Expertise area, and answered on a daily basis by our Voltimum Experts.
Question: Please clarify whether the metal rim of a recessed downlight for a GU10 230V LED lamp has to be separately earthed – is this so?
The product is supplied with a GU10 lampholder plus a connector in a small box that has the double insulated label. The small plastic box is connected to an L-shaped metal base that is then pushed / fixed into a slit on the metal ring. This is the same ring and connector plus socket GU10 arrangement that is widely used with halogen lamps.
Answer: A class II or double insulated luminaire will have no provision or requirement for protective earthing since they are designed and constructed so that the exposed metal parts CANNOT become live.
So, if this is a Class II luminaire, you do not need to earth the metal frame.
However, I urge you to check with your supplier that this is indeed a Class II luminaire, should you have any doubts.
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