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Author Topic: Upside down light switches?  (Read 6709 times)

Daniel Levi

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Re: Upside down light switches?
« Reply #40 on: May 04, 2017, 06:53:59 am »

The only problem is that some cheap LED's have horrendous power factor and that whilst it makes no difference to household bills (other than the price per kWh going up due to larger trasformers and cables required) it can make quite a difference to business electricity which is charged on actual power.
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Jean-Pierre Coetzee

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Re: Upside down light switches?
« Reply #41 on: May 04, 2017, 10:48:55 am »

I tend to only buy Phillips for exactly that reason.

Had our backup generator blow up because of triplen harmonics so even a well trained electrician doesn't always understand what is going on regarding power factor.

He learnt quickly after that.
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Daniel Levi

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Re: Upside down light switches?
« Reply #42 on: May 04, 2017, 12:52:36 pm »

I tend to only buy Phillips for exactly that reason.

Had our backup generator blow up because of triplen harmonics so even a well trained electrician doesn't always understand what is going on regarding power factor.

He learnt quickly after that.

There is a video from bigclive on youtube about power factor nd generators after a carnival group wanted to switch to LED and he goes through the problems of using LED's with bad power factor and the generator load problems they create. https://www.youtube.com/watch?v=FtqPRnVP1bw
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Jean-Pierre Coetzee

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Re: Upside down light switches?
« Reply #43 on: May 04, 2017, 01:13:01 pm »

I'm pretty sure that the main incoming neutral(we get separate L1L2L3N) burning up causing us to switch to generator should have alerted him to the potential problem.

Regardless they just upgraded the wiring on the incomer and upgraded the generator and business as usual.
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Word & Life Church

"If you want "loud", then run a piece of sheet metal through a table saw------

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Scott Helmke

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Re: Upside down light switches?
« Reply #44 on: May 04, 2017, 06:24:17 pm »

There is a video from bigclive on youtube about power factor nd generators after a carnival group wanted to switch to LED and he goes through the problems of using LED's with bad power factor and the generator load problems they create. https://www.youtube.com/watch?v=FtqPRnVP1bw

All the carnivals that come through my locale have gone all LED, aside from some legacy fluorescent tubes here and there. I figure they saw the math pretty well, less than half the power consumption and drastically reduced replacement needs.  When you bring your own generators you're going to notice power savings.
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Re: Upside down light switches?
« Reply #44 on: May 04, 2017, 06:24:17 pm »


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