Loop in Ceiling Rose

[meltedhouse]

Connected 2 browns together and to nothing, 2 blacks to N and 2 Greys to L. Nothing

Connected 2 browns together and to nothing, 2 blacks to L and 2 Greys to N. Nothing

New pics added to album of transformer. I did notice that there is a clear fuse thingy in the transformer where the blue/black goes into.

 

[Spark123]

You will need a multimeter to identify what each wire is doing. I suspect the correct configuration will be the 2 greys to L, 2 blacks to N and the two browns together and to nothing else. You haven't had mains connected to the secondary have you? (Don't try this!!)

 

[meltedhouse]

You haven't had mains connected to the secondary have you? (Don't try this!!)

You could be talking swahili with that one mate, dont have a clue what you are on about.. I'm off to B & Q...back in a mo.

 

[Spark123]

The secondary of the transformer is connected to the the brown and blue wires which connect to the lamps (extra low voltage.)

 

[meltedhouse]

The secondary of the transformer is connected to the the brown and blue wires which connect to the lamps (extra low voltage.)

No, these have a molded brown plug on the end which connects to the light tray. I have a multimeter now and dont know what to do with it!!

 

[Spark123]

OK, set it to ohms range and (with the electric off), disconnect the supply wires and can you measure the resistance between the L and N on the fitting?

 

[meltedhouse]

OK, set it to ohms range and (with the electric off), disconnect the supply wires and can you measure the resistance between the L and N on the fitting?

Please excuse my ignorance - the light fitting?

 

[Spark123]

The thing you have just put up - can you measure the resistance between L&N of the transformer with the supply wires disconnected?

 

[meltedhouse]

The thing you have just put up - can you measure the resistance between L&N of the transformer with the supply wires disconnected?

I am obviously not doing something right. I am putting the red and black probes onto the L&N wires of the Transformer and getting readings of -115, -135.

 

[Spark123]

You're right, you shouldn't be getting a -ve figure. When you touch the probes together you should get 0 ohms, when take them apart the figure should rise to infinity. When you measure the resistance of the transformer primary L - N (with the supply wires disconnected) you will hopefully see a resistance.

 

[meltedhouse]

You're right, you shouldn't be getting a -ve figure. When you touch the probes together you should get 0 ohms, when take them apart the figure should rise to infinity. When you measure the resistance of the transformer primary L - N (with the supply wires disconnected) you will hopefully see a resistance.

Sorry spark123, I have been away for a couple of days working. I have done what you said and am getting a resistance of 002. This is at the 200 ohms setting on the multimeter.

 

[Spark123]

Can you do the same for the secondary side of the transformer? Brown - Blue wire with the lamps unplugged?
Is 200 ohms the lowest setting?

 

[meltedhouse]

Secondary side 00.2. 200ohms is the lowest setting on the multimeter.

 

[Spark123]

Are you confident at using the multimeter to measure voltage AC?
Can you post a photo of the multimeter?

 

[333rocky333]

Just for testing
I wonder if you might be better buying a cheap pendant from b and q remove the rose from it, leave your light up and connect the flex into the brown and black ,connecters you have, fit a lamp and see if that works.
Then retry with grey and black to test the switch
It may be possible your fitting is at fault.