Double insulated light with earth?

stevei · Post by **stevei** » Sun Feb 16, 2025 7:29 am

I've got a new light to fit and it is double insulated. It has a 4 way connector with Wago type on the input side, marked Neutral, Earth, Permanent Live and Switched Live. There is nothing connected to the earth on the light side, so why would it have the earth connector?

Someone-Else · Post by **Someone-Else** » Sun Feb 16, 2025 9:19 am

For the definitive answer, ask the manufacturer why they gave it an earth terminal, anything else is a guess.

Neelix · Post by **Neelix** » Sun Feb 16, 2025 9:54 am

Because it’s cheaper to use the connector AND it places the earth from the ceiling in a safe place would be my guess

Someone-Else · Post by **Someone-Else** » Sun Feb 16, 2025 10:29 am

Neelix wrote: ↑Sun Feb 16, 2025 9:54 amBecause it’s cheaper to use the connector AND it places the earth from the ceiling in a safe place would be my guess

No offence to Neelix, (or anyone else that replies) but that is my whole point, it is just a guess. It does not mean it is correct. If a reply said "because it is cheaper to use the same connector for all lights" would that have got a like? again it is just a guess.

Neelix · Post by **Neelix** » Sun Feb 16, 2025 1:38 pm

Someone-Else wrote: ↑Sun Feb 16, 2025 10:29 am
Neelix wrote: ↑Sun Feb 16, 2025 9:54 amBecause it’s cheaper to use the connector AND it places the earth from the ceiling in a safe place would be my guess
No offence to Neelix, (or anyone else that replies) but that is my whole point, it is just a guess. It does not mean it is correct. If a reply said "because it is cheaper to use the same connector for all lights" would that have got a like? again it is just a guess.

Yes a guess a photo of the new light and the instructions might clear this up

wine~o · Post by **wine~o** » Sun Feb 16, 2025 3:04 pm

stevei, Frankly I'm suprised that no-one has given you the correct answer which is, in two words earth continuity.

Although the light fitting itself requires no earth, the integrity of the earthing MUST be retained.

So although that fitting may not require earthing the next light fitting along the circuit or the switch associated with that fitting may/probably will.

I'm suprised that neither Neelix nor S-E picked up on that.

ericmark · Post by **ericmark** » Sun Feb 16, 2025 5:05 pm

The regulations state "A circuit protective conductor shall be run to and terminated at each point in wiring and at each accessory except a lampholder having no exposed-conductive-parts and suspended from such a point." so to comply with regulations there has to be a terminal for the earth.

stevei · Post by **stevei** » Sun Feb 16, 2025 8:26 pm

I have fitted the light and I did connect the earth wire on the feed side. I understand the need for continuity of the earth on all circuits. I would normally make the earth safe within the fitting if no connection point was available. Thank you again to all for the answers.