Re: Anyone moved to LED Lighting?

[don@xxxxxxxxxxxxxx (Don Klipstein)]

In article <hhi9g8$14k$1@xxxxxxxxxxxxxxxxxxxxxxxxxx>, The Daring Dufas wrote:
>Dave Houston wrote:
>> The Daring Dufas <the-daring-dufas@xxxxxxxxxxxxxx> wrote:
>>
>>> CFL units also
>>> use switching power supplies to operate the lamp and a wholesale change
>>> over to CFL lighting could cause problems in older buildings.
>>
>> I'm not sure how much of a problem this will be. Most commercial/industrial
>> buildings use tubular fluorescents and/or high pressure sodium lights which
>> save far more energy than CFLs so there's no incentive (nor mandate) to
>> switch to CFLs. (Changing from magnetic to electronic ballasts may be a
>> problem but I don't know how prevalent this is.)
>>
>> As lighting is only 9% of residential energy use, even changing to 100%
>> CFL/LED with SMPS may not be a major problem. Electic rates already embed
>> charges for residential power factor issues (rather than use demand
>> metering). It's likely that the utilities will merely ask for rate increases
>> to compensate for their increased costs related to harmonics.
>
>I was thinking more along the lines of older apartment buildings in
>large cities, especially very old ones. The building may have its
>own transformer in the basement and if it was never updated since
>the 1920's or 1930's, there could be some problems caused by the
>asymmetrical loads.

  CFLs are symmetric loads.

 - Don Klipstein (don@xxxxxxxxx)