On Fri, 29 Oct 2010 13:03:02 -0400, wrote:

On Fri, 29 Oct 2010 12:47:53 -0400, wrote:

On Fri, 29 Oct 2010 08:12:31 -0400, wrote:

I also question your "100w" bulb theory. A regular old F40 4'
fluorescent tube uses 40 watts, not counting the ballast. Even the
newest F032T8 electronic ballast system still consumes 130w or so for
four 8' tubes.

The question is not how much power it consumes. The question is how
much of that power gets exhaled as heat, rather than as light.

Once again, it DOESN'T MATTER if it's light or heat. Except what leaks out
the windows, is turned to useful heat *very* quickly.

The amount of light from 4 - 8' tubes compared to a single 100 watt
incandescent? Surely you can see what is wrong with that picture!

It doesn't matter! Watts is watts.