Spotlight Bar - LED Light Bulbs ( 2nd )

3 Nov 2006
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United Kingdom
The thread Spotlight Bar - LED Light Bulbs has been taken over by comments about whinny

There are instances where a lamp holder rated at 40 Watts incandescent overheats when a much lower wattage LED lamp is used in the holder.

This may be because :-

In an incandescent lamp the majority of the heat produced in the filament is radiated into free space from the glass / quartz envelope and does not significantly heat the lamp holder

In an LED the lamp's integral driver module is in the cavity of the screw or bayonet cap of the lamp. The lamp holder is heated by the heat passing from the cap.
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