Under cabinet lighting earth query

[psafloyd]

I want to replace my old fluorescent tube T4s kitchen under cabinet lamps. However, I have bought T5s instead.

I am confident about chaning the starting lead which starts at a fused isolation/light switch. I can then daisy chain with connector flex.

However, the second lead is a spur for the other two lights on the other side of the kitchen and being T4 has no earth.

My question is, do these T5s require an earth, or can I reuse the existing cable and connect another T5 terminal to the T4 cable?

If it was easy to change the cable, I would just do that, but it runs behind some cupboards and tiling, too, from what I can make out.

The switch is on the light circuit for the downstairs at the fuse box.

 

[ericmark]

Except for a pendant, fixed installation require an earth taking to each appliance even if the appliance is class II. As to if that is always followed is another question.

 

[psafloyd]

OK, thanks. So I either need to source T4 Lead replacements and send these back, or get that two core cable replaced with one with three?

 

[Adam_151]

Can we have pics of exactly what you have got and what you are trying to do, as its a little unclear.

 

[RandomGrinch]

Except for a pendant, fixed installation require an earth taking to each appliance even if the appliance is class II. As to if that is always followed is another question.

So I can't connect a class II appliance, say a heater, or a TV, mounted to the wall, to an FCU with it's own cable?
My understanding was there was to be an earth connection to each "outlet", not each "appliance".

 

[RandomGrinch]

I want to replace my old fluorescent tube T4s kitchen under cabinet lamps. However, I have bought T5s instead.

The difference between a T4 tube and a T5 Tube is only its length.
Fittings for both these tube types may, or may not require an earth (although dedicated under cabinet lights tend to be Class 2) - Do your new fittings have an earth connection?
What model are they?

However, given the effort you are going to with the wiring, I really wouldn't be bothering with tubes at all.
There are plenty of LED under cabinet lights available, that are also Class 2.

 

[psafloyd]

Yes, it was T5 replacement LED units I purchased and it has a three core wire instead of the two core the T4s use.

 

[Murdochcat]

Except for a pendant, fixed installation require an earth taking to each appliance even if the appliance is class II. As to if that is always followed is another question.

Not sure I agree with this.

A class 2 appliance or fitting, supplied with a 2 core cable, can be connected to the fixed wiring via a fused unit or switch or junction box.

Best examples that spring to mind are cooker hood’s and LED lights