300w Halogen LED Equivalent

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networkn

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#307000 11-Sep-2023 20:17

Hi.

We have 2 x 300w ceiling-mounted oyster-style lights in our lounge/living area. I want to move them to LED equivalents.

We don't want less light once we change over.

It seems like 300w is ~6000 lumens and it seems that oyster LED's with 6000 Lumens isn't really a thing. It seems rare to see them above 3500.

I assume there must be more than one way they measure this. How do I find an equivalent lighting solution in LED?

TIA

timmmay

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#3126199 11-Sep-2023 20:19

Maybe you need to scale out rather than scale up.

networkn

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#3126200 11-Sep-2023 20:20

timmmay:

Maybe you need to scale out rather than scale up.

I do not understand your meaning.

timmmay

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#3126203 11-Sep-2023 20:26

More lights rather than brighter lights.

networkn

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#3126204 11-Sep-2023 20:30

timmmay:

More lights rather than brighter lights.

Oh, yeah, I mean, we could, but I'd really rather not.

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#3126210 11-Sep-2023 20:38

There are some 4000+ lumen oyster fittings, but past that you've conventionally been going into physically larger, longer office-style fittings or high-bays. That's a lot of light for a residential space.

Actual delivered light output depends on optics, reflectors, and other factors. The existing fittings might not be delivering 100% of light to the actual work surfaces below - 50-70% might be typical, with the remainder lost as heat where it fails to reflect or to pass through lenses. LED fittings are typically quite a bit better, and often are rated by output light, not bulb light.

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#3126369 12-Sep-2023 08:18

Man, those 300W Halogens must be pumping some serious heat out. They'd be super bright?

Sorry, haven't got an answer around 6000lm LEDs, other than it'd be a serious amount of light. 100W incandescent is about 1200-1300 Lumens, so your 300W Halogen @6000lm is 5 x 100W Incandescent. To get 6000lm in LEDs, you're looking at about a 60W LED. I've never seen a consumer LED that big. If your Halogen isn't 6000lm (I've seen some online that are only around 3500 Lumens) you may find an LED replacement like the following:

Aliexpress say they have 30W R7S bulbs (which is what I assume your Oyster light takes?)

R7S LED Dimmable COB Lamp Bulb 118mm 78mm Glass Tube 40W 30W 15W Replace Halogen Lamp Light AC 220V 230V 240V R7S Spotlight - AliExpress

Take their power claims with a grain of salt, but for ~$10 what's to lose?

networkn

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#3126391 12-Sep-2023 09:00

I want to actually replace the entire fitting as the current ones collect bugs.

I am wondering if they aren't actually 6000 Lumens, a fair number of sites cite more like 3000-3500. I might try my luck with something along that line and see how I go.

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#3126415 12-Sep-2023 09:57

100W incandescent bulbs' lumen output can be confusing on the internet.

In high-voltage countries, it's 1200 - in low-voltage areas, it's 1600.

When I came to NZ 40+ years ago (from Canada) - I thought my eyes had 'gone funny'.
All domestic lighting seemed very dim.

Seems that a bulb's light output is a function of filament surface area.
If you double the lamp's voltage, you must reduce the filament wire size (to increase it's electrical resistance).
Reducing the wire size reduces the wire's surface area.
So high-voltage filaments have smaller emitting areas - and thus produce less light.
They're also a bit more fragile.

So, looking at lumen equivalencies for LED, Halogen and incandescent bulbs - you need to keep the author's country in mind when you read the numbers.

richms

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#3126485 12-Sep-2023 13:15

I did not find any linear halogen replacement LEDs that did not totally suck for ripple. Also none could compete with a 100w for brightness. I imagine it's worse with the longer 300/500mm ones.

Richard rich.ms