Earthing metal light fittings

[thedon99]

I'm struggling with some of the advice I'm finding on the net. Hopefully someone in the DIYnot community can set me straight!

I've got new metal light fittings (flourescant ceiling batten mounted) in my garage and in the fitting they have an earth in the connecting block, which is also connected by a tongue of metal from the chassis of the light.

I've seen mostly advice saying the fitting should be earthed, but some contradictory advice saying metal light fittings shouldn't be earthed.

As the fitting has the earth connection I'm tempted to connect it - Can anyone tell me if this is right or wrong thing to do?

 

[EFLImpudence]

Yes it must be connected.

Some metal fittings are double insulated and do not require it and must not be earthed.

 

[viewer]

It should be connected. May be a good idea to check that the garage itself and other metal fittings are earthed.

 

[thedon99]

Yep, I've done a Zs test (0.48) which I think gives me a good earth reading.

Thanks guys.

 

[ban-all-sheds]

I've seen ... some ... advice saying metal light fittings shouldn't be earthed.

Really?

Where?

Sure you haven't misread something saying that not all metal light fittings necessarily need an earth?