Pendant light question

[sawdust1]

Hi all. The other half has taken a fancy to a pendant light , which on the spec say's 25W max.
Can we use a 60W LED bulb in this fitting ?
Thanks for any replies.

 

[porker]

I doubt the LED bulb is 60W. Are you sure that the 60W refers to equivalent output? Most LED bulbs for indoor use are less than 10W. If so it will be OK.

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[porker]

Also if the output is supposed to be 60W do you want a lamp that bright? (I tend to find they are a bit optimistic about how much light these LED bulb give out though)

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[LancsRick]

60w led will be blinding, I expect that is the equivalent rating. You want to find the true rating of the led bulb, which must be below 25w in your case. Unless this is the lamp to end all lamps it should be.

 

[skipdiver]

I bought a 40w equivalent LED yesterday and glad i didn't go for the 60w. It's very bright compared to the old low energy spiral type.

 

[Phil Pascoe]

Be careful also of the K number - the colour temperature - the higher being bluer. it depends what you want it for, bluer generally thought better for reading.

 

[sawdust1]

Sorry chaps i got a bit muddled with my question.
If the pendant is rated at 25W max could we use a 60W standard bulb, what would happen if we did ?
If not then we will have to use a 10W LED which is 60W equivalent in a standard bulb.
Thanks for the replies.

 

[nev]

...
If the pendant is rated at 25W max could we use a 60W standard bulb, what would happen if we did ?
...

It would probably overheat and melt.

25w seems awfully small for a pendant lamp though.

 

[Steve Maskery]

In ye olden days of incandescent bulbs, wattage was a convenient way of describing how bright a bulb was, because more watts equated to more light.

But it really isn't how much power it consumes that we are interested in it's how much light is produced. Light output is measured in Lumens, but we, the public, are not used to using those numbers. We have a good idea what a 60W bulb will look like, but who knows what 800 Lumens looks like?

So manufacturers continue to label their LED bulbs as 60W Equivalent, even though it only uses11W of energy.

So your fitting is designed to cope with 25W max of energy. If you use a 25W traditional bulb, it will be very dim, but if you were able to buy a 25W LED bulb, it would be blinding.

You need a bulb that consumes less than 25W, no matter what its Lumens output is.

 

[Dinky78]

why do these new fangled led bulbs break down so much .. something wrong surely?

 

[Harbo]

I've recently replaced 40W incandescent bulbs with their equivalent 6W LEDs but they are a lot brighter. So "equivalence" is not that accurate.

But the light fitment was running at 5 x 40 = 200W now 5x6 =30W

Rod

 

[Phil Pascoe]

why do these new fangled led bulbs break down so much .. something wrong surely?

I've had all sorts from good to very cheap over the last four years and have yet to have one break down.

 

[Psw1811]

Leds produce no heat so should be no problem

 

[Steve Maskery]

Yes they jolly well do!
The LED itself may not, but in an LED bulb there is a transformer to convert 240V to whatever V is is that LEDs use. The neck of the bulb gets very hot indeed. DAMHIKI!

 

[Racers]

Leds produce no heat so should be no problem

It's not possible for something with a voltage across it and current flowing through it not to produce heat unless it's 100% efficient which is impossible of course.

Pete

 

[PrestonShed]

i bought a 12w LED bulb and that was equivalent to an old style 100w incandescent bulb

 

[sometimewoodworker]

Leds produce no heat so should be no problem

Humm.
Yes they do, the brighter the LED's the greater the heat. They do however waste less of the power in heat compared to other systems

Here is one I'm fitting

You can be sure that the Chinese do not fit redundant parts.
The heat sink gets quite warm after a while.

 

[Bm101]

On the heat issue, in our old flat (a big house conversion with high ceilings) we wanted to reduce the height of the hallway. Where it had been narrowed in the original conversion the height was overwhelming compared to the width and made it feel oddly cramped. Fair play to the Mrs, she suggested lowering the height. Not only did we get a load of new storage space above via a hatch but the new lower ceiling balanced out the space so weirdly it felt bigger or at least more balanced. The sparks was concerned about the lack of void space in the new 'ceiling' so fitted low voltage leds to counter any heat build up.They were very small rather than standard downlight type but a line of them was enough to light the hallway nicely.
Cheers
Chris

 

[Jonzjob]

The wattage if an incandescing bulb is also the heat it will chuck out and the restriction on a wattage is purely for that. I have turned 4 angle poise typy lamps, all with G10 fittings, mains voltage bulbs. In fact I'm using one now as I tyrpe this and they don't get hot even after hours switched on. Warm yes, but definately not hot. That is the reason I was able to turn the close fitting 'shadees'. This is one of them. The shade is only just over 2 1/4" diameter.





I have wanted to do this for years but couldn't because of the heat produced by other bulbs.