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Light bulb safety

Lisa Miles
Hi all


Asking for a friend who needs to change a light bulb in their new home.


The current light bulb in the ceiling pendant is a 40w (28w halogen) bulb but they find it too dim.

Can they safely swap that out for a 60w (42w halogen)?


There's no rating stickers or information of any on the light fitting itself so they don't want to put in a higher rated bulb if it may overheat and cause a fire.


  • 0
    Lisa Lisa Lisa, we put bulbs in gardens and we put lamps in lampholders. Go to the naughty corner. LED lamp is the way to go by the way (in a lampholder)
  • 0
    Lisa, do not go on the naughty step just yet as you are amongst the probably 99.99999999% of the population who believe the bulb to be the correct term for an electric light bulb. All the english dictionaries I have read (Chambers, OED. etc) describe a lamp as the unit providing illumination as in gas lamp, electric lamp and a bulb as the source of illumination in a lamp, as well as the horticultural definition. It is only amongst electricians that the bulb becomes the lamp and a lamp a lamp holder. ? 

  • 0
    I use CFLs on the stairwell.  I don't really care about the light quality, and they were being given away a while back, so I have loads of them.  I find 11W perfectly adequate, but I don't really need a brightly lit stairwell.
  • 0

    Simon Barker:

    but I don't really need a brightly lit stairwell. 



    I would want to see what I'm falling on, ?. A stairwell in particular is the place for adequate lumens.


    Jaymack
  • 0

    kfh:

    It is only amongst electricians that the bulb becomes the lamp and a lamp a lamp holder. ? 




    There were lamps before leccy, and they might have been placed in a lamp holder. What they certainly didn't have was a bulb or if you want to be old-fashioned, a globe.


    Don't worry about the naught step, Lisa. I will join you there and we can be naughty together. ?

  • 0
    Presumably that sounded alright in your head Chris!

  • 0
    Electric lamps or light bulbs, we know what we mean....Incandescence Lamps......

    https://en.wikipedia.org/wiki/Edison_and_Swan_Electric_Light_Company



    Watts in a name anyway?             

    https://en.wikipedia.org/wiki/Edison_light_bulb                                                                                                                                                   Z.
  • 0
    Very punie ?
  • 0

    Lisa Miles:

    ..


    There's no rating stickers or information of any on the light fitting itself


    ..



     might be a sticker visible inside when the lamp is taken out.

     
    How many engineers does it take to change a light bulb? :)

  • 0
    As I remember lighting circuits were designed to take  a maximum of 10 times 100W lamps @240V, fuse rating at 5A.

    Using 6A MCBs @230V nominal Voltage you could increase the number of lamps on the circuit to 12.

    100W tungsten filament lamps = 15-20W LED in light output. You will probably only need 11W LED to provide suitable illumination for a stairwell.These figures are only approximate as the watt rating of LEDs varies somewatt ......

    Legh


    Just to add we still use B22 bayonet cap fittings

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