Max rating using low energy bulbs

[marev]

I have a couple of table lamps that have a max rating of 60w (standard bulb). If i replace the standard bulbs with low energy ones can i only go up to an 11w (equivalent to 60w) or can i also use a 20w (equivalent to 100w).

Are light fittings rated on the max direct wattage power used or the amount of light heat they emit?

 

[BS3036]

Are light fittings rated on the max direct wattage power used or the amount of light heat they emit?

On the max direct wattage power used (in your terms). So you could put a bigger one in.

 

[333rocky333]

For a GLS lamp type, table lamp, the wattage is usually limited by the type of shade used, in regards to the heat and depending whether the lamp is upwards or downwards,the cable.

The only other reason for limiting the lamp wattage would be where the maximum wattage is limited by the max rating of a transformer, dimmer,switch or similar.

There used to be T1 and T2 lampholders, one of which was lower temperature rating, but now AFAIK all basic ones are now all one rating, the higher one.

EDIT
some switched lampholders are still T1 rated at 60 watts

I would say as long as the heat output of your 20 watt low energy lamp, is lower than a 60watt normal lamp ( most likely ) and not via a dimmer it would be ok.

 

[kai]

An energy saver lamp rated at 20 watts is fine and safe for a 60watt max lamp,
...however if it is to look nice, check it fits inside the shade, and does not poke out of the top of it etc.

 

[marev]

Thanks guys