On 13/03/2013 02:28, Arfa Daily wrote:
snipThey then went on to
make some further claims about how much more money they were going to
save as a result of fitting these new LED based lights. Both myself, and
my neighbour, who is an industrial electrician of many years experience,
think that the claims being made are fairly outrageous, and that the
numbers, as presented, don't stack up.
/snip

snip to fill in the pools of gloom left by setting fewer
of them further apart./snip

It'll be the lower number of lights and the night-time dimming that save
money, not the efficiency.

Andy