RE: GBlist: 12volt systems

["Matt Duston" <mountainsun@pcisys.net>]

>12v lighting are generally halogen incandescents. The energy consumption is
>about the same as any other incandescent.  Pretty as they may look, they
are
>not part of greenbuilding. I suspect a lot of people may hope that low
>voltage means low energy and I think there should be a big sign in the
store
>explaining the consumption of each type of light.
>Malcolm

i think the misperception about 12v systems is because they are commonly
used in PV-powered and wind-powered homes.  people think that if they are
good enough for an earthship they are good enough for me.  but of course the
real reson they are used in those situations is that they run on the 12V DC
power readily available from PV and wind systems, without the need for an
expensive inverter to make 120V power.

matt

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This greenbuilding dialogue is sponsored by CREST <www.crest.org>
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______________________________________________________________________
This greenbuilding dialogue is sponsored by CREST <www.crest.org>
BuildingGreen <www.buildinggreen.com> and Oikos <www.oikos.com>
For  instructions send  e-mail to  greenbuilding-request@crest.org.
______________________________________________________________________