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Yard lights (High pressure sodium to LED)

fishyx 1,299 163 May 15, 2016 at 10:15 PM
Looking to change a few 150 watt HPS yard/barn lights to LED. Probably want to get whole new fixtures but would entertain LED replacement bulbs. These are both mounted on 15 ft poles at the cabin and are dusk to dawns. Any particular ones I should take a good look at???

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#2
It might be best to show links to what your looking at. I know stuff like this exist. My city is replacing street lights with LED's. You will most likely want a new fixture so it's designed to dissipate the heat. I would expect for it to be fairly expensive.
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#3
Quote from fishyx View Post :
Looking to change a few 150 watt HPS yard/barn lights to LED. Probably want to get whole new fixtures but would entertain LED replacement bulbs. These are both mounted on 15 ft poles at the cabin and are dusk to dawns. Any particular ones I should take a good look at???
If you're trying the replicate the 16000 lumens of a 150w HPS bulb it will be quite expensive. If you can do with less light it will be more affordable.

If you need a lot of light, CFL may be more viable.
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#4
Ones I've seen have their own dedicated fixtures because they throw off a lot of heat and LEDs are very temperature sensitive unlike HPS. Plenty of ~50w/80w/100w/etc options on ebay and amazon.
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Quote from brbubba View Post :
Ones I've seen have their own dedicated fixtures because they throw off a lot of heat and LEDs are very temperature sensitive unlike HPS. Plenty of ~50w/80w/100w/etc options on ebay and amazon.
You have to be a bit careful with the cheapies from ebay/amazon/ali as they often aren't UL listed. If they overheat and cause a fire, that's a place you don't want to be with your insurance company.
Something like this porducs 1/5 of the light of the 150W HPS but it might be enough: http://www.homedepot.com/p/Lithon.../205534235


There's also the whole light pollution / dark sky thing.
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Last edited by jkee May 16, 2016 at 11:57 AM
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Quote from jkee View Post :
You have to be a bit careful with the cheapies from ebay/amazon/ali as they often aren't UL listed. If they overheat and cause a fire, that's a place you don't want to be with your insurance company.
Something like this porducs 1/5 of the light of the 150W HPS but it might be enough: http://www.homedepot.com/p/Lithon.../205534235


There's also the whole light pollution / dark sky thing.
I did look at that Homedepot option and also this one:
http://www.amazon.com/Lithonia-Li...M1TF6NJV61

Anyone here try any similar models???? From what I've read, these LED fixtures can save ya anywhere between 10-15 bucks a month compared to HPS, true????
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#7
Quote from fishyx View Post :
I did look at that Homedepot option and also this one:
http://www.amazon.com/Lithonia-Li...M1TF6NJV61

Anyone here try any similar models???? From what I've read, these LED fixtures can save ya anywhere between 10-15 bucks a month compared to HPS, true????
Well you're looking at 3150 lumens vs 16000 lumens

HPS has a ballast i think. If we're generous and say it's 80% efficient that 187 watts,
Lets say the light is on 10 hours a day.
187*10 hours*30 days = 56.2 KWh / month * 2 lights = 112KWh / mo
Check your power bill... if $0.10/kwh that's $11 /mo; @ $0.20/kWh $22/mo

It's a lot less light, but 35 watt led would be:
35*10*30 = 10.5KWh / mo * 2 light = 21KWh
@ $0.10 $2.1/mo; @$0.20 $4.2/mo

So you're saving estimate is in the ball park but it's also a lot less light, but maybe still enough. Repayment period ~ 2 yrs in energy savings
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#8
Similar light output, but this one is less: http://www.homedepot.com/p/All-Pr.../205690882

If you needed to get back to 16k lumens (I doubt you do), you'd be back where you started wattage wise. There are some more commercial led fixtures that are better but very expensive. HPS is actually a lot more efficient than I realized.
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Last edited by jkee May 17, 2016 at 10:26 AM

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#9
Cooper has all types of options. These are high end lights, like what a company would put in their parking lot or a city would put on the streets. AKA not cheap but they should last for nearly ever

http://www.cooperindustries.com/c...adway.html

Looks like this is for a HPS Replacement http://www.cooperindustries.com/c...adway.html

Bad thing is you will have to contact a dealer to get pricing.
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#10
Quote from jkee View Post :
Similar light output, but this one is less: http://www.homedepot.com/p/All-Pr.../205690882

If you needed to get back to 16k lumens (I doubt you do), you'd be back where you started wattage wise. There are some more commercial led fixtures that are better but very expensive. HPS is actually a lot more efficient than I realized.
I did end up going with this All-Pro model but picked them up at Menards for around $80.00 on sale. They seem like nice durable fixtures that do a good job replacing the Mercury lights. Light output is just a little less but not very noticeable where I have them mounted. It's also nice to not hear the buzzing of a ballast all night while sitting at the campfire!!!!Smilie
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Last edited by fishyx July 10, 2016 at 06:13 PM
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#11
Quote from fishyx View Post :
I did end up going with this All-Pro model but picked them up at Menards for around $80.00 on sale. They seem like nice durable fixtures that do a good job replacing the Mercury lights. Light output is just a little less but not very noticeable where I have them mounted. It's also nice to not hear the buzzing of a ballast all night while sitting at the campfire!!!!Smilie
That's a ton less light from the LED you choose compared to a High pressure sodium ligh, over 10,000 lumens.
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