Earthing Appliances

[timegoesby]

Do all metal cased appliances need to have the earth connection on the terminal strip earthed to the metal casing?

thnx

[John Rumm]

They need to be earthed - not sure which "terminal strip" you are refering to though.

[Andrew Gabriel]

A metal cased appliance can still be double insulated. However, in that case I wouldn't expect provision for an earth terminal. So if it has an earth terminal, I think I would expect it to be connected to a metal case.

[Andy Wade]

Some items of Class 2 fixed equipment do have an isolated parking terminal for the CPC of the supplying circuit though.

If it's Class 2 the double-square symbol will be present somewhere to indicate that the case should not be earthed.

[timegoesby]

I am fixing a small wall fixed metal cabinet with some relays and a timer inside. There will be a permanent live inside. Do I have to earth the metal cabinet to the earth terminal on the terminal strip?

[Dave Plowman (News)]

The chances of this being double insulated are near zero, so yes. However, this sounds a rather technical exercise for such a basic question?

[Andrew Gabriel]

Yes, unless it is double insulated.

[timegoesby]

Thanks

[timegoesby]

One point. I noticed that appliances that have plugs are CE rated, yet I don't seem to see that on appliances that are to be fixed and have a fused spur. Did I see it wrong or is that the case? CE for portable appliances for the general public to use, and it need not be CE if fixed with a fuse spur?

[Matt]

Dave, can't you recognise its Dribble who's posting?

[Dave Plowman (News)]

Dribble wouldn't know what a relay was?

[timegoesby]

Something tells me you and Dave Plowman are one and the same.

[Matt]

Only Dribble could come out with something ridiculous like that.

Wrong end of the country anyway Dribble, last time I was south of Watford Gap was over 6 months ago. Where I am is high enough above sea level and far enough away so its totally safe from your plumbing antics both water and gas.

So stop trying to be Poirot and get back to that counter Drivel, I need you to sell some more copper tanks to make me even richer.

[Andy Luckman (AJL Electronics)]

Re-*plonk* DIMM