Andy Champ wrote:
Trevor Smith wrote:
Thankyou for the replies, I didn't think the dichrioc reflector had
much to do with it as both lamps have them but when you look at the
capsual the 12v one is a lot brighter. I just done a bit of quick
maths and the 12v 50w lamp draws 4.16 amps and the 240v 50w lamp draws
0.208 amps so I gather more amps = more light.


I don't know the correct answer, but that definitely isn't it. (I'd
_guess_ the 12v is running at a higher temperature, which gives better
efficiency but shorter life)

Andy
half right. More efficiency, but longer life. I suppose the element,
being thicker, abardes away more slowly.

But its a fact. 12v lamps outlast 240v ones by about 10:1