On 12/12/2013 10:05 PM, Joe wrote:
In article ,
"Phil Allison" wrote:

"Shaun"
"amdx"

Just remeber, as I understand it, most CFL's are not made to be run
upside down.

BULL****! Most light bulbs are installed upside down, maybe you need a
good whack upside the head!!


** Some CFLs are alleged to have a shorter life if run bulb upwards.

So bulb down is the norm.



.... Phil

I thought it was just the opposite -

That's what I thought also.

and I surmised that the reason was
that the bulb was the heat source, and putting it ABOVE the base allowed
most of that heat to dissipate via convection.

The CFL's are supposed to be long life, but those I use in my ceiling
fixtures with the base up, in a glass globe open on the down end seem
to fail sooner than expected. I think the heat collects in the globes
shortening the life.
Mikek

Mikek