Wow. Looks like it's the size of a fluorescent fixture for a 2X4 grid ceiling lol. Imagine being in a building that wal lit with all LPS or HPS? Very hard to see lol.
It is to replace a 400w HPS it is for out side at my dads building this LPS will be put close to the LED but not too close after all the building is way bigger than a Stop & Shop . The LPS will have a timer and be on 4 hours every night. I am in a room lit with LPS right now.
90W LPS gets 13500 lumens and 400W HPS gets 50000 lumens, over 3 times more lumens than 90W LPS. 90W LPS is about equal to 150W HPS which gets 16000 lumens. This is raw lumens too so the 150W HPS should appear even brighter than the 90W LPS.
But now the 400w hps was taken down and now we have a 10,000lm LED. 400w will get you 50,000lm the first 6 months but 1/2 way of its life it gets 70lm per watt. Sorry but with NG running the light on the pole it was very dim / no way it was 50,000lm it is most likely 28,000lm because HPS dims fast so 400 x 70. LPS is 200 x 90 so we are close. HPS is total crap
HPS lamp do not dim out that much. In fact they barely loose any lumens at all over their rated life. Only MV and probe start MH noticably dim out. The flood light could be dim because of a bad capacitor or a lamp with a bad seal, breaking the vacuum and not letting the lamp warm up all the way. A HPS lamp that works properly will be nearly just as bright after thousands of hours as it was when new.
HPS is not crap. It's easier to see under than LPS and much cheaper to use because the fixtures and lamps are far cheaper. The money you save on the electric bill is canceled out by the high cost of the fixtures and lamps. LPS lamps don't last as long (18000 hours vs 24000 hours) and they have limited applications (they must be run horizontally or you'll destroy the lamp except for 18-55W lamps).
HPS isn't the best lamp source but it's certainly not crap. It provides lots of light for a low fixture and lamp cost and low energy cost. The quality of the light isn't great but it's surely better quality than LPS. CMH is better than both HPS and LPS. The raw lumens are less but because the CRI is so high, they appear just as bright if not brighter than LPS or HPS because the human eye can use all the light. because the human eye is more sensitive to light at the green-blue end of the spectrum, light at the red end of the spectrum is less useful to the human eye.
You see the HPS lights close to me????? They are so dim I will take a photo soon of them. Low energy cost?? NG was charging my dad over $ 700 for a dim HPS and LPS is good for owls and all other things like space. We can agree to disagree it is fine, I just think the US is very bad for using HPS. LPS is better for space the sky stays dark and we can all agree LED is very bad. I am all about the environment and I just want what is best and we can't put us first. I agree with the "shrink the population" party I think the population needs to go down 50% by 2064. I just want people to under stand we can't go down this path for ever. I just want people to save energy and I can look my kids in the eye and say I tried to save energy. I also support the the sport light tax. I want an 100% tax on all new fixtures that are not LPS put the money in a fund to help LPS-E.
the lamps might have leaked. Report them in to NGrid and see if they're brighter after they're fixed. Blackstone Valley Utility installed lots of 250W HPS floods so they could be 250W. NECo installed more 400W floods. Yeah LPS is better for sea turtle nesting areas. They don't have mercury either which is another plus. I don't think the color of the light has an effect on the earth. with LPS and HPS the sky glows an icky orange color. At least with MH and other white lights the sky glows a more natural purple.
But yeah I'll agree to disagree. I like all light sources and dont want to see any go away though it's too late for MV and incandecent.
Yes I have the lamp but I need to get more, Thanks for asking. I hate HPS and I don't like how the US uses it. LPS is one big step to saving energy. I will remove all my HPS fixtures and I am mad I ever used it.
You are right HPS has a crap color.
I can only have LPS at my dads home because of the owls and the wet lands The MH Wide-lites can stay because they are for emergency only.
Mike You should be happy all I like now is LPS because what do you think will happen with some of the old fixtures I hate?
Are you getting rid of all your non-LPS stuff? The old fixtures like the L-250s, the old GE M-250R, and the Line Material light with the 3Ms you should keep and maybe convert to LPS?
I am converting the L-250s to 35w LPS-E one will be 18w Line Material will be LPS. OVX will be MV. The intersection has changed big time I will take photos of the new one. The old GE will stay 400w MV Wide Lite will stay 1000w MH, So you have type of street light, Can I give you the 100w HPS? It is the on on the tree.
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HPS is not crap. It's easier to see under than LPS and much cheaper to use because the fixtures and lamps are far cheaper. The money you save on the electric bill is canceled out by the high cost of the fixtures and lamps. LPS lamps don't last as long (18000 hours vs 24000 hours) and they have limited applications (they must be run horizontally or you'll destroy the lamp except for 18-55W lamps).
HPS isn't the best lamp source but it's certainly not crap. It provides lots of light for a low fixture and lamp cost and low energy cost. The quality of the light isn't great but it's surely better quality than LPS. CMH is better than both HPS and LPS. The raw lumens are less but because the CRI is so high, they appear just as bright if not brighter than LPS or HPS because the human eye can use all the light. because the human eye is more sensitive to light at the green-blue end of the spectrum, light at the red end of the spectrum is less useful to the human eye.
But yeah I'll agree to disagree. I like all light sources and dont want to see any go away though it's too late for MV and incandecent.
You are right HPS has a crap color.
I can only have LPS at my dads home because of the owls and the wet lands The MH Wide-lites can stay because they are for emergency only.
Mike You should be happy all I like now is LPS because what do you think will happen with some of the old fixtures I hate?