[Greenbuilding] Another Lighting Retrofit

[Alan Abrams]

thanks, Paul. will be checking with our local fire marshal for comparison.

Alan Abrams

*certified professional building designer, AIBDcertified passive house
consultant, PHIUS*
*certified passive house builder, PHIUS*
cell     202-437-8583
alan at abramsdesignbuild.com
HELICON WORKS *Architecture and Education*
<http://www.heliconworks.com/index2.html>

On Tue, Apr 19, 2016 at 10:18 PM, Paul M. Eldridge <
paul.eldridge at ns.sympatico.ca> wrote:

> ‎Sorry, folks, I will try this one last time and hopefully get it right;
> appreciate everyone's patience. ‎
>
> ‎Hi Alan,
>
> Our local fire code requires a minimum of 50 lux or 5 foot candles be
> maintained in hallways at all times, so this is something you may wish to
> investigate further. And with 7 to 9-watt A19 LEDs now producing about as
> much light as a 60-watt household incandescent, there might not be a whole
> lot to be gained at the end of the day.
>
> As another point of comparison, a 2-lamp F32T8 wall cube or wrap equipped
> with two‎ 12-watt InstantFIT T-LEDs powered by a NEMA Premium 0.77 BF
> ballast draws approximately 23-watts and supplies 2900 lumens, or over125
> lumens per watt. That's about as much light as you would derive from two
> 100-watt incandescents, and the numbers continue to improve with each
> passing year, e.g., Philips has publicly announced that they expect their
> InstantFIT T-LEDs to hit the 200 lumen per watt mark in the not too distant
> future.
>
> Regards,
> Paul
>
> Sent via my BlackBerry Q10 | Ce message envoyé avec mon BlackBerry Q10
>
>
> Hi Paul (or other electrical wizards)-
>
> do you have any experience retrofitting hotel or multifamily corridor
> lighting with occupancy sensors? For example, what are the code
> limitations--minimum lighting levels when not actuated, hours of operation,
> etc...
>
> I've stayed in apartment bldgs in Europe where corridor lights were
> completely off, all the time, unless actuated. I am also aware that
> California was considering a mandate for dual level systems a few years
> ago, with limited hours of operation, but I don't know what became of it.
> IIRC, they would have required one lumen per square foot, when not
> actuated.
>
> -aa
>
> Alan Abrams
>
> *certified professional building designer, AIBDcertified passive house
> consultant, PHIUS*
> *certified passive house builder, PHIUS*
> cell 202-437-8583
> alan at abramsdesignbuild.com
> HELICON WORKS *Architecture and Education*
> <http://www.heliconworks.com/index2.html>
>
>
>
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