how to change a light bulb

[studentspark]

Downlighter lamps.

IS it always best to use Aluminium lamps for open and closed fittings.



What kind of fittings should use Dichroic Lamps

 

[JohnD]

Do your own homework.

You should have stayed awke during the lecture, and read the handout or textbook.

 

[studentspark]

Its not a college question. This is a real life question

I have looked around on this and read the ESC leaflet and various web pages etc

I know it sound a bit basic, but it is something that concerns me.

I am not a fan of downlighters. I see loads installed incorrectly, such as next to a joist or cut into a joist. Not fire rated.
I've seen lots of examples of burnt cable, and heat damage to surrounding areas.
When we put them in we put them in right. We even go to the trouble of spraying area around light with fire retardant spray.

Its when you go and see someone elses work.

I would just like clarification on what lamps to put in. These things get sooo hot it just seems weird to me that we can put them in dry dusty places.

If very close to wood I will refuse to put lamps in or suggest LED.
People often think you are being difficult though.


So its best practice advice I am after.

The fire rated lamps I put aluminium reflector lamps in.

The 'open' type I put aluminium in.
Normally max 35 watt as rating sticker is often not there.

With shower lights with the protective glass is it best practice to use the reflector lamps - heat forward.

I understand the use of cool beal lamps so display items do not get hot.

I have never seen a fitting that requires a dichroic lamp. Thought the literature often does not tell you
But yet these are the only type you can often get.

Both lamp types get incredibly hot though, so in an open fitting with clear air around does it make a difference.

what if on lath and plaster
Plaster board
MDF

Also

The fittings often have no markings so you don't know if they are F rated or not.

F rating confuses me. you could have two pretty much identical fittings

not F marked, well f crosses out so not suitable for normally flammable surfaces

http://www.aurora.eu.com/ProductPages/LampProductDetails.aspx?g=2988&c=81&b=71&oc=81

Does not tell you , helpful!

http://www.aurora.eu.com/ProductPages/LampProductDetails.aspx?g=2994&c=81&b=71&oc=81

F marked
http://www.aurora.eu.com/ProductPages/LampProductDetails.aspx?g=3007&c=81&b=71&oc=81

These fittings often look the same feel the same and made from the same metal it seems


Thanks

 

[riveralt]

Downlighter lamps.

IS it always best to use Aluminium lamps for open and closed fittings.

What kind of fittings should use Dichroic Lamps

You follow 134.1.1

But you know this already
Furthermore, you say that 'we' are fitting them - then surely you should be asking the person who is fitting them with you these questions rather than a DIY forum.

 

[studentspark]

Manufactures instructions are all well and good if new fitting with instructions.

what about a old fitting no instructions no makers name, nothing.

As for why ask on here.

I like to get a few views on the matter, sometimes its hard to get an answer to a simple question

 

[studentspark]

 

[333rocky333]

I brought an aurora fire rated one last week , when i unpacked it in the instructions it mentioned "use 35w aluminium reflecter lamps on combustible surfaces," about five seperate times, however the thing is supplied with a 50 watt in the box, so ended up im stuck in the middle of nowhere without a lamp.
Now got to go all the way back with one