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20 years!
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Here is one of those 20 year maintence free Leoteks near my house. This fixture lasted just over 2 years. I have seen a few of them also half lit leaving me to believe that the one of the drivers failed. I'll report it monday and see if it gets replaced.
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I've noticed NGrid is taking forever to fix lights I report here too and typically just fix them without sending me an email notification. I've also noticed that they've been sticking Lexalite/AEL 115 refractors in just about every light they fix even if the existing lens is fine. I'm seeing a lot more Lexalite/AEL refractors in M-250R2s now. They don't look bad, but they look odd. A few years ago they were using all Formed Plastics lenses, which look good in any GE fixture and look OK in 113s and older mercs. then they were just using random lenses, probably from removed lights. I saw Cooper OVZ plastic lenses, 113 lenses, M-250R2 lenses (both squared plastic and glass) and others. Now they use Lexalite/AEL refractors for all small lights, even 250W!
I noticed some of the new Coopers that NGrid has been installing don't have the new glass lens, they have the older style. Makes me wonder if Cooper is using both, like how GE flip-flopped between the shallow and deep glasses for their M-250 fixtures from the 60s through the early 90s before they introduced a new glass lens as the sole glass refractor for the M-250R2 and M-250A2.
Here, NGrid made a public statement saying they don't plan to offer anything besides HPS in the near future but they said that they encourage municipalities to purchase the lights currently owned and maintained by NGrid and then install their own LEDs in place of the existing leased lights. Basically they're trying to dump the cost of LEDs on the municipalites. Works for me because I don't want to say goodbye to cobraheads. RIDOT has started using LEDs (or at least testing them) so I guess they're not going to continue using HPS. Not a huge loss since they use FCO cobraheads anyway but I'd still rather see FCO cobraheads over those waffle irons lol.