>rise buildings, sports arenas, etc. Most extremely large facilities have a
>277 volt bus that powers the entire facilities lighting. The 277 volt
>scheme presents a tremendous cost savings as individual lamp ballasts are
>not required. Other benefits include centralized power factor control and

        Fluorescent lamps? No ballasts? Could you give more info? ;o)


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Alexandre Souza
taito@terra.com.br
http://planeta.terra.com.br/lazer/pinball/

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