testing a light fitting

[Andy™]

Can still have a place to terminate the earth even if not strictly required?

nat said there was an earth lead - if it was just a terminal, then possibly a parking place, but there would also be a class II logo

 

[green-hornet]

Can still have a place to terminate the earth even if not strictly required?

Yes it is possible, however the earth would never be allowed to come into contact with any part of the fitting, other than an insulated enclosure.

Normal good practice is to sleeve and terminate the earth so as not to come into contact with the fitted devise, but to allow for earthing should the fitting be changed at a later date.

Normal bad practice is to cut the cpc at the sheath and sod any requirement for earth at a later date.

 

[Robin Spark]

Hi Natasha,

was just wondering if that small earthing cable on the bracket was supposed to be attached to the main body of the light fitting along with the cpc?

Doesnt really seem a good idea that you could remove fitting from bracket with L&N connected but no cpc!

 

[avinalarf]

[quote name='Andy

 

[AAAMUSEMENTS]

Hi AndyOk. Have read late night threads with interest. I double checked the fitting and it has the square within a square symbol which is double insulated isn't it???

As mentioned before, the ceiling bracket has an earth cable fitted to it (this is how it came). Within the ceiling rose is the large transformer which has L&N cables coming from it. There is nowhere within the fitting itself for a cpc to be connected, which is why I connected it to the supply earth.

Is what I did incorrect then?

Nope, you definitely did right. I fitted something similar to this at my Sister's house last year, they are definitely Class 2 double insulated, and the earth tag is as someone suggested earlier just somewhere to park the unused cpc for future use.

 

[Andy™]

but why would you have a flylead? surely there would be either a terminal, or nothing.

Nat - whats the boy of the light made from? if its metallic, is there anything non-metallic between terminations and metallic part?

see strange it would have a DI symbol, and an earth lead!

 

[avinalarf]

[quote name='Andy

 

[Andy™]

if there is any way the live conductor can touch a metallic part (like if it was to fall out of terminal and hit side), then the light cannot be class II, since that metallic part will need earthed

 

[green-hornet]

Hold on!

Is this light halogen? the small I cant remember the name of the lamp thingy ones?

The lights are run off 12v, and not 240volt.

 

[avinalarf]

GH - yes they are 12v halogen - lamps are of the G4 type.

 

[batty]

Sounds to me like its a fitting made in china and probably does not comply with our standards as others have said it should either be class 1 or class 2 it can't be both.

Batty

 

[green-hornet]

Its definately a class 2.

The earth link may be a standard fiting placed on multiple units that are interchangeble, or there to provide a connection to the loop earth.

 

[avinalarf]

oh gawd! The fitting was bought in John Lewis and does have the CE mark on it!

Bo**ocks! Should I attempt to fit it again?

What extra tests should I do, if any?

Should I connect the earth fly lead from the bracket to the circuit cpc?

HELLLLLLLLLLLLLLP!

 

[batty]

oh gawd! The fitting was bought in John Lewis and does have the CE mark on it!Bo**ocks! Should I attempt to fit it again?

What extra tests should I do, if any?

Should I connect the earth fly lead from the bracket to the circuit cpc?

HELLLLLLLLLLLLLLP!

What do the instructions say Norah?

 

[Apache]

oh gawd! The fitting was bought in John Lewis and does have the CE mark on it!Bo**ocks! Should I attempt to fit it again?

What extra tests should I do, if any?

Should I connect the earth fly lead from the bracket to the circuit cpc?

HELLLLLLLLLLLLLLP!

Natasha ( :x ),

1. did it come with instructions?!

2. can you find it here?

 

[avinalarf]

What do the instructions say Norah?

NORAH??? I think I'd change my name by deed pole if my mum had christened me that!

Thanks for the link Patch. It's a few years old now and I had fitted it with no problems in my previous home. Nowhere for it in my new house, so mum said she'd have it.

I'll look for instructions when I return home.

 

[Andy™]

any chance of a pic of connections?

 

[Megaohm7]

Ha Ha !! I'm not the only one then ? ROTFWL

 

[Apache]

[quote name='Andy

 

[kme]

Nat:

Don`t panic. The debate r.e class1 / 2 is besides the point, as far as you are concerned.

I`ve put a few of these up; and the fact that the tx is encapsulated, with 12v coming off, means the metal body isn`t an issue. Yes, the tag on the bracket effectively earths the body of the fitting, but so what!

Hope I`m not telling you what you already know, but you mentioned not all of the lights worked at first. How did you actually fit the lamps. although they are 12V G4 lamps, they`re still halogen, and the same rules apply. No touching lamps with bare skin when fitting them........you`ll shorten the life of the lamp dramatically.

You have done the job right, by the posts I`ve just read, and the readings you had are spot on - of course there`s 240 to the casing - from live! If you need to check again; check casing to Neutral - you shouldn`t have any voltage present. You read 245V, because the body of the fitting is 245V AWAY from LIVE potential - got it? That is exactly where it should be.

n.b. If you`d had about 125V, that would be the body of the fitting NOT connected to earth, and "floating" halfway between the potential of the supply - make sense?

KME