Lighting Transformer - requires earthing?

[simon kennedy]

Hi E.F.
I am replacing 3 lighting transformers in my kitchen.
The existing ones plug into 3 x main sockets which are on the AC mains circuit via a light switch and are earthed.
The replacement transformers have no earth connection - do I need to earth the new transformers? If so, how?
It's a DIY project, any pointers appreciated.
Thanks,
Simon
Manchester

 

[Pete999]

Does the new transformer have a logo, a square within a square? if yes then it's double insulated and doesn't require a cpc.

 

[Spoon]

 

[MDJ]

Hi E.F.
I am replacing 3 lighting transformers in my kitchen.
The existing ones plug into 3 x main sockets which are on the AC mains circuit via a light switch and are earthed.
The replacement transformers have no earth connection - do I need to earth the new transformers? If so, how?
It's a DIY project, any pointers appreciated.
Thanks,
Simon
Manchester

God help us all

 

[telectrix]

God help us all

where's the "Gasp"? youse slipping mate,

 

[Spoon]

God help us all

I just did, in post #3

 

[Pete999]

I just did, in post #3

Yes but I did it before you in post2

 

[telectrix]

plenty electricians in manc area could wire this up properly 4u. lights fed from 3 13A plugs via light switches is so Romanian.

 

[Octopus]

Hum ..... lighting transformers in 13A sockets ..... op could you post a picky of the new transformer ?

And why not a like for like replacement?

 

[simon kennedy]

Hi Murdoch,
The previous transformers were Ikea mains plug transformers, all goosed.
I've attached a grab of the transformer I've bought.
Thanks,
Simon

 

[Octopus]

That's a class 2 transformer so doesn't need an earth .....

 

[simon kennedy]

I've attached a crude drawing too:

 

[simon kennedy]

That's a class 2 transformer so doesn't need an earth .....

Thanks Murdoch - I've wired the new transformer up and it works. What do I do with the earth cable that was wired into the mains socket?
Cheers, Simon

 

[simon kennedy]

Here's the proposed new set up:

 

[Octopus]

Here's the proposed new set up:

View attachment 44706

Bad idea ........ put a plug on the new transformer and plug it into the existing socket ...............

 

[Deleted member 26818]

Thanks Murdoch - I've wired the new transformer up and it works. What do I do with the earth cable that was wired into the mains socket?
Cheers, Simon

You have to terminate it somewhere.
Deja vu anyone?

 

[simon kennedy]

Will do.
Many thanks Murdoch,
Simon

 

[GeorgeCooke]

Are these 13a sockets wired on to the lighting circuit via a light switch? If so that is bad practice. 13a sockets should not be on the lighting circuit. Think what would happen if someone plugged the kettle into one of them.

Also note what you have are not transformers (whatever the suppliers say) they are electronic switch mode supplies.

 

[simon kennedy]

Hi George,
The sockets are hid on the top of a cupboard and are dedicated to the transformers, nothing else.
Would using an earthed transformer be a better alternative?
Thanks,
Simon

 

[telectrix]

as the sockets are out of the way and not likely to be used for anything else, go with murdoch's advice. fit plugs to the input side of the PSUs. just won't have an earth connection in the plugs. job done.