I got this information from a DOE publication that
benchmarked a lot of different LED, CF and incandescent
light sources:
http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/caliper_round_5_summary_final.pdf
It does not seem to mention anything about ballasts,
though.
I suspect that a cheapo HD fluorescent fixture will be
quite a bit less efficient than a high-quality,
high-efficiency model.
Doug
> --- On Mon, 2/23/09, Randall <tr3driver@ca.rr.com>
> wrote:
>
> > From: Randall <tr3driver@ca.rr.com>
> > Subject: Re: [Shop-talk] Dimmable CFLs at Home Depot
> > To: "'shop-talk List'"
> <shop-talk@autox.team.net>
> > Date: Monday, February 23, 2009, 9:40 PM
> > > One other point: The classic non-compact
> fluorescent
> > fixture with
> > > tube bulbs has immediate full brightness AND
> higher
> > efficiency than CFs.
> >
> > Are you sure about that? Those old magnetic ballasts
> > weren't very good and
> > there are still a lot of them around. Their power
> > consumption doesn't
> > usually get included in the fixture rating; while the
> CFL
> > does.
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