On 24/10/2017 11:11, Dave Plowman (News) wrote:
In article ,
Johnny B Good wrote:
I tried a 30W CFL in our hall pendant fitting a couple or three years
ago. It was claimed to be equivalent to a 130W incandescent lamp AFAICR
but my impression was that it seemed no brighter than a 100W incandescent
lamp which makes me suspect that the wattage equivilency for CFLs is
still based on the UK and European 240 and 220 volt 1000 hour lamps
rather than the much brighter American 120v 750 hour lamps which is the
benchmark for LED lamps.

Never really understood why makers need to lie about light output. Does it
sell more to the gullible? It certainly annoys those who expect such
claims to be true.

If they claimed the light output was say equivalent to the 60w (or
whatever) GLS most would know, and it turned out to be better, who would
complain?


Save that there are adults today who have never used ordinary, domestic
incandescent lamp and wouldn't find that a useful benchmark.

--
Robin
reply-to address is (intended to be) valid