House Light Bulbs

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Originally Posted by Vern

That research is mostly directed at headlights.
As for the newly built rental house, they either chose the wrong colour temp (kelvin) or weren't told they had a choice from the builder or electrician.
They will most likely be 6000k, change them to 3000k.

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That research was mostly (initially) around Street lighting, and its impact on people and animals vision, behaviour and circadian rhythms.

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Originally Posted by Tombie

That research was mostly (initially) around Street lighting, and its impact on people and animals vision, behaviour and circadian rhythms.

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Yeah not aware of that research (or any research really[emoji4]). But I have noticed they have gone back to using high pressure sodium a lot more nowadays.

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Originally Posted by 1950landy

AMy beet is when we bought the lights 8 years ago we were told we had to use low energy lights now 8 years on we are being told we have to use LED's

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I believe it's the sale of halogens that is now ending - much like that of the old standard incandescent bulb.

Australia set to be first to axe halogen | Lux Magazine | Luxreview.com | Australia / NZ | Home page

CFLs are being banned in the EU, too.

Did you know that halogen bulbs will be banned in the EU in Sept 2018?

Halogen and CFLs to be banned in Europe | Lux Magazine | Luxreview.com | Australia / NZ | Home page

Out in the plant, we replaced all our mercury vapour high bay lights with LEDs.
Not even a year later, the LEDs are failing. Due to heat. The thing is, they don't exceed the manufacturers rated high temperature.
The manufacturer is working on a solution. It must be costing them a motsza.

If they throw their hands up, I guess we may have to go back to the mercury vapour units.

Hmm, that's interesting. I was talking to the blokes at KLR Auto and they replaced their high bays with LEDs, too.

Power consumption is greatly reduced but if they fail, the cost benefit of LEDs may be greatly reduced.

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Originally Posted by Vern

That research is mostly directed at headlights.
As for the newly built rental house, they either chose the wrong colour temp (kelvin) or weren't told they had a choice from the builder or electrician.
They will most likely be 6000k, change them to 3000k.

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Yes, change down to anything under 4000K for living or 'human' areas. Laundry & Powder rooms deserve 'daylight'.[biggrin]
That research is also about interior lighting. Both LED and flouro's (depending on price) lack the red spectrum-end, and humans respond negatively to such light.

Actually, it's a whole subject/thread in itself, but suffice to say that mixing any incandescent in with CFL / flouros / LEDS is a cheap but worthwhile fix.
A 'Warm White' LED torch gives a better light especially outdoors/bush even if the lumen rating is lower. But they're $$$ in comparison.

I have a 25W decorative (terribly in-efficient!) filament bulb in my desk-lamp, and it spills onto the computer screen.
Eyes feel less stressed...

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Originally Posted by superquag

Yes, change down to anything under 4000K for living or 'human' areas. Laundry & Powder rooms deserve 'daylight'.[biggrin]
That research is also about interior lighting. Both LED and flouro's (depending on price) lack the red spectrum-end, and humans respond negatively to such light.

Actually, it's a whole subject/thread in itself, but suffice to say that mixing any incandescent in with CFL / flouros / LEDS is a cheap but worthwhile fix.
A 'Warm White' LED torch gives a better light especially outdoors/bush even if the lumen rating is lower. But they're $$$ in comparison.

I have a 25W decorative (terribly in-efficient!) filament bulb in my desk-lamp, and it spills onto the computer screen.
Eyes feel less stressed...

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Speaking of computers Win 10 has a night light setting in display settings that turns the screen a redder hue after a set time.

Regards,
Tote

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Originally Posted by Mick_Marsh

Out in the plant, we replaced all our mercury vapour high bay lights with LEDs.
Not even a year later, the LEDs are failing. Due to heat. The thing is, they don't exceed the manufacturers rated high temperature.
The manufacturer is working on a solution. It must be costing them a motsza.

If they throw their hands up, I guess we may have to go back to the mercury vapour units.

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And a real PITA to change as they often need a scissor lift to get to them.[bigsad]

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Originally Posted by scarry

And a real PITA to change as they often need a scissor lift to get to them.[bigsad]

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In this case, too high for a scissor lift and access is a problem. A scaffold is constructed during a shut.