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Anyone have any experience with this?
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Posted by: Vic---------------------
http://www.power-save.com/
Sounds good, in theory.
Does it work as advertised?
Posted by: junkjeeps---------------------
I sent the link to a friend who is an electrician and am going to show it to an electrical engineer I work with tomorrow. I'll let you know what they say about it.
Posted by: sparkysakitas---------------------
i am an electrican and looking through the page it doesnt tell what the unit does 
from the looks of it all it is basiclly is a capictor similar to the ones the car stereo guys use for there amps. so it may have minimul effect ,others might see better results if they do alot of laundry run a/c alot or have home workshop with some heavy duty tools
(this is just my opinion from looking at there brochure)
me myself I wouldnt buy one easier ways to save on electric bill
Posted by: motometal---------------------
I'm not an electrician, but I took a look at it. It appears to be simple power factor correction, which could actually work as they say and is not junk science. This normally takes inductors and/or capacitors depending on what lead/lag you have, plus the circuitry to control it. I'm a bit surprised that this would fit in such a small box.
The short version of the explanation would be that the more appliances with motors you have on your line, the more benefit you could get from this box.
Regarding the special light bulbs they sell, I'm all for conserving resources but realistically looking at the average home, most of the power is consumed by major appliances, things with motors or resistive heating elements, not by lights. For example a dehumidifier in your basement can use $20-$30/month by itself. Most folks could get as much good out of just remembering to turn the lights off when not using, than to spend $$$ on fancy light bulbs.
Posted by: Jaybird---------------------
Surely this device only works when an inductive motor first asks for power.
The amp draw at start-up is quite a bit larger than what the motor actually needs to continue running.
I am but a hack, but perhaps this incresed ask for energy surge is what is being "scavenged", rather than wasted, resulting in a bit of energy use savings?
Posted by: junkjeeps---------------------
Alright, the guy I spoke to says this. Residential power is not penalized for reactive power, only commercial/industrial users. That box is a big capacitor that smoothes out power delivery and corrects reactive power. Your amperage may decrease while your voltage slightly increases when it is used, but your meter will still spin the same. Savings, if any, will be minimal. If the power company ever starts penalizing residential users, then everyone will have one. I guess he knows what he's talking about.
Posted by: Vic---------------------
Thanks for the info.
Posted by: motometal---------------------
i'm only a hack as well Jay.
while capacitors could be used to correct power factor (only one direction I think), it wouldn't be practical to use them to store AC, you would have to have a rectifier to go to DC, then back to AC with an inverter, which wouldn't be practical.
Posted by: sparkysakitas---------------------
the best uses for capacitors i can think of is in mercury vapor ,metal halide, and high pressure sodium lighting fixtures
( parking lot lights warehouse lights etc)
where you need a higher voltage to ignite the gas in the bulbs and in industrial motor applications etc
other than that i dont see them very much
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