downlighters and insulation

mrcrow · 16 Jul 2016

L1 by mrcrow_uk, on Flickr

L2 by mrcrow_uk, on Flickr

my bathroom has these downlighters (4 total) fitted, and before i moved in
i can see they have a transformer.
i want to fit the protective cover to keep the insulation off them, it wasnt re-fitted, but hesitate to cover the transformer suspecting it gets hot too...
what need i do to finish this area by fitting all the mountains of insulation lying which was moved away to do the job
thanks again
geof

Taylortwocities · 16 Jul 2016

They will get warm inside your "lid" but they will fry if you pile 200mm on top of them and the sun comes out to heat up the loft space.

17thman · 16 Jul 2016

This is the contradiction of different building regs. In your situation I would put some upturned 300mm high plant pots with holes in the bottom (now top) over the lighting appliances and transformers and then cover the area with insulation leaving the tops of the pots free. Of course, now you are possibly covering the other circuit cables to the extend that they may now not comply with current installation requirements. This is why £100.00 for an expert on site visit may save your life

Taylortwocities · 16 Jul 2016

Get real. Even under extreme circumstances, you'll be hard pressed to get the Ci large enough to affect the CCC of 1mm² cable used in that lighting circuit.

I would be concerned if it was a shower circuit, or a well-loaded ring final,but not a lighting circuit.

phatboy · 16 Jul 2016

On the rare occasions I have been involved with 12v lights like that, I have used a loft lid or similar on the fitting, and kept the transformer outside of it, sitting on top of the insulation.

ban-all-sheds · 16 Jul 2016

17thman said:
This is the contradiction of different building regs.

It only seems like that to people who are hard of understanding.

In your situation I would put some upturned 300mm high plant pots with holes in the bottom (now top) over the lighting appliances and transformers and then cover the area with insulation leaving the tops of the pots free.

I'm sure that you would.

But please don't encourage other people to also behave like f***wits.

winston1 · 17 Jul 2016

mrcrow said:
L1 by mrcrow_uk, on Flickr

L2 by mrcrow_uk, on Flickr

my bathroom has these downlighters (4 total) fitted, and before i moved in
i can see they have a transformer.
i want to fit the protective cover to keep the insulation off them, it wasnt re-fitted, but hesitate to cover the transformer suspecting it gets hot too...
what need i do to finish this area by fitting all the mountains of insulation lying which was moved away to do the job
thanks again
geof

If you look more closely you will see that they are NOT transformers, but switch mode pulse width modulated power supplies.

Taylortwocities · 17 Jul 2016

winston1 · 17 Jul 2016

Nothing pedantry. Transformers and SMPT are completely different things.

Taylortwocities · 17 Jul 2016

ban-all-sheds · 17 Jul 2016

winston1 said:
If you look more closely you will see that they are NOT transformers, but switch mode pulse width modulated power supplies.

Just FOAD, you worthless, annoying, pointless waste of every single thing you consume. Including air.

securespark · 17 Jul 2016

This is despite pictures being posted here of manufacturers labelling their own products as "transformers".

He does it deliberately to get a reaction.

Difficult as it is, we need to ignore him then he will either stop, or cease getting perverse pleasure out of doing what he does.

How many of winston's sub-2000 posts are of this type?

mrcrow · 17 Jul 2016

phatboy said:
On the rare occasions I have been involved with 12v lights like that, I have used a loft lid or similar on the fitting, and kept the transformer outside of it, sitting on top of the insulation.

thanks i felt that something along those lines needed to be done...
cheers
geof

mrcrow · 17 Jul 2016

Taylortwocities said:
They will get warm inside your "lid" but they will fry if you pile 200mm on top of them and the sun comes out to heat up the loft space.

i will take the high road...and put them outside the insulation..

mrcrow · 17 Jul 2016

17th man... This is the contradiction of different building regs. In your situation I would put some upturned 300mm high plant pots with holes in the bottom (now top) over the lighting appliances and transformers and then cover the area with insulation leaving the tops of the pots free. Of course said:
Get real. Even under extreme circumstances, you'll be hard pressed to get the Ci large enough to affect the CCC of 1mm² cable used in that lighting circuit.

I would be concerned if it was a shower circuit, or a well-loaded ring final,but not a lighting circuit.

yes i do however take the point given about covering up wiring taking high loading
most of the lighting circuits...1.5 and 1.0 are under the insulation in this 30 year old house
however the bathroom had an electric shower installed some time before i moved in and i can see the whopper cable going down to it...so i will ensure that it remains above the insulation... and the transformers as well...and where its possible will put their wiring above the insulation

many thanks

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downlighters and insulation

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