I know the Cooper/McGraw Edison UTR Traditionaire, GE TC-100, and American Electric 247 were commonly installed as MV or HPS fixtures for a long time (with common wattages being 175W MV, 100W HPS, or 150W HPS, or 50-70W HPS/100W MV in some regions that use a lower wattage, especially in residential subdivisions, etc. AEL and GE offered them with horizontal lamps, and GE had a vertical mount. They also made them in MH, though they’re relatively rare compared to the HPS or MV versions in most cases. In mh area, they seem common in condo complexes as 100 or 150 watt HPS.

I know they launched more post tops later, like the Cooper Lexington or the GE Salem. The Lexington became a quite common fixture as well, most commonly HPS or MV, but sometimes MH. The Salem was common in certain places.

Eventually, FCO post tops became a thing, most often LED, but they also made them in HPS and I think MH too. What do you think of those post tops? Do you prefer the FCO ones or the standard ones?

Just like with cobra heads, the coach style lanterns seem uncommon in metal halide compared to HPS or MV. MH was relatively common for acorn fixtures, though. I’ve likely seen MH acorns with the acrylic or polycarbonate globe even more than the HPS ones. I’ve seen more of the Holophane Granvilles in HPS but I’ve seen some in MH too.

American Electric 247’s made before 2008 I believe all used the arched tops. Those made 2008 or later didn’t seem to have the arched top. Some 247’s seem to have NEMA tags but some do not. In my area, it seems that they’re using FCO Cooper LED post tops to replace failed HPS ones in condo complexes. A few are not FCO, but most are

It seems that Cooper Traditionaire HID post tops often have refractors as panels. AEL and GE ones didn’t have that. All the LED versions of the coach style post tops seem to have the LEDs mounted in the roof of the fixture, even the Cooper ones, kind of like the idea of the horizontal mount TC-100 or AEL 247. Some variants of the Lexington also apparently used the horizontal bulb mount. I believe the newer GE TC-100’s had a slightly different hat design than the older ones did and the NEMA tags all were different. Somewhere in the 2000s, AEL made a copy of the UTR Traditionaire I believe.

The atomic style fixtures also became common (AEL Comtempo, GE PM series, GE P17M, Westinghouse Pinto, etc), also were quite common, also frequently running HPS and MV lamps.

Acorns are common as HPS, MH, and LED. Mercury vapor acorns seem very rare but apparently Charleston, SC used some acorns with blue NEMA tags (VERY unusual to find a NEMA tag on an acorn to begin with, but that means they were MV which makes it even more unusual), but acorns in Charleston seemed to have them. What is your favorite design of post tops? Of course we also have other designs, such as the RSL-350 (usually HPS if used on a city-owned street, but Cracker Barrel uses MH versions) and/or the New Haven and whatever that GE model was (GE made one that was similar to the Cooper). I’ve seen more incandescent acorns and globe fixtures than mercury acorns and globe fixtures. I’ve never been to Charleston, that is only based on images I’ve seen on Google Streetview,

McGraw Lawn-Glo fixtures I’ve seen many times (or fixtures that appear to be them) on people’s front yards with standard light sockets (ones with HID lamps seem very rare), as I’ve only seen them in standard incandescent, but I know they made them in 100W MV and 50-150W HPS and I think those came with mogul base sockets va the medium base on the incandescent fixture.

When Fred Meyer started building larger "open ceiling" stores, they used metal halide high bays with coated lamps.  They seem to prefer warmer color temperature lighting, around 3000-3500K.  When the large store was built here in 1991, it was lit with probe start high bays with coated BT lamps.  During the 2001 remodel, they swapped to pulse start with coated ED lamps.  The second smaller store across town was built in 2005 with the same pulse start lights that were used at the other store after the remodel.

In 2008 they started replacing the metal halide lights at both stores with 6-lamp T8 fluorescent high bays.  At some point between 2015-2020, they were converted to LED.  I'm not as certain when that happened because that conversion wasn't as obvious since they just used InstantFit tubes.

I’m assuming those were lamps with 3000K phosphor. They didn’t make probe start MH lamps with true warm white halide salts. They only did that for PSMH lamps, but they did make lamps with 3000K phosphor. That’s probably what they used.

A standard coated lamp is 3700-4000K (depending on the color temperature of the arc tube, as clear MH lamps can vary between 3900 and 4200K depending on the lamp)

I remember the stark contrast between the Fred Meyer store and the PASE store that opened a year later, which used clear MH lamps with a relatively high color temp.

Good possibility lol, I don't know if this was made as a transitional fixture for certain though. Could also be a custom made fixture for this interchange that I found these in.

Interesting! I wonder if they were made during the short transition period when GE discontinued the HM-1000 and released the X209. This likely would've been around '73 or '74.

The Japanese have nailed it here, with lamp and driver, (like a lamp and ballast)  they're street lighting could go back to proper old school methods 👍, it's just a shame the west will carry on with integrated flat lanterns that have to be changed completely! 😖

Menards, Best Buy, and Lowe’s also all used coated lamps for interior store lighting if they used MH. Best Buy and Lowe’s eventually went fluorescent and then LED. Some Dick’s Sporting Goods locations also used coated MH bulbs (though some used clear). Toys R Us when it was open seemed to often use clear metal halide. Some locations had fluorescent.

When Fred Meyer started building larger "open ceiling" stores, they used metal halide high bays with coated lamps.  They seem to prefer warmer color temperature lighting, around 3000-3500K.  When the large store was built here in 1991, it was lit with probe start high bays with coated BT lamps.  During the 2001 remodel, they swapped to pulse start with coated ED lamps.  The second smaller store across town was built in 2005 with the same pulse start lights that were used at the other store after the remodel.

In 2008 they started replacing the metal halide lights at both stores with 6-lamp T8 fluorescent high bays.  At some point between 2015-2020, they were converted to LED.  I'm not as certain when that happened because that conversion wasn't as obvious since they just used InstantFit tubes.

A lot of the low bays had them too. Not just high bays. Even the closed bottom ones frequently had coated bulbs (I’ve seen several closed bottom low bays with coated lamps based on the pattern on the refractor). Clear and coated lamps do not produce the same refractive patterns.

A lot of recessed cans also had coated lamps, and they’re also quite common in those recessed troffer fixtures and in canopy lights. I’ve occasionally seen them in shoeboxes, post tops, wall packs, or flood lights, though not as common. Coated metal halide is still way more common than coated HPS. Coated HPS bulbs were quite common in residential wall packs though, but that’s because that’s what they came with not because of user choice. Usually, once the lamp failed, the business (or consumer), would just put a clear one in. I’ve been to parking lots before that had all coated metal halide bulbs in the flood lights and shoeboxes.

It seems quite common for people to mistake coated metal halide for mercury vapor, which is why some people may think they’re rare. It’s quite easy to distinguish them especially when new. Coated metal halide lamps when new do not have as much pink in the spectrum as coated mercury vapor bulbs (coated MV lamps have a slight pink or purple hue to them that coated MH lamps don’t usually have when new). The CRI is also different (70 for coated MH vs 50 for coated MV).

Coated metal halide lamps were very common in gymnasiums, stores, warehouses, and in pretty much every place where MH is used indoors. Coated MH is much more common indoors than coated mercury vapor is. Coated MH lamps are easier on the eyes and are less glary which is why they were used so much in certain applications.

Indoor MV fixtures were widely converted to metal halide if installed. Indoor MV lighting was probably the first lighting to be converted to MH, and conversions often started in the 1970s or 1980s

I am not saying this is the case for anyone here but brains can convince themselves of very crazy nonsensical things. Having special interests is definitely a sign, and I'd venture to say that many people here have a special interest (lighting that is). Of course all the social stuff as well but not everyone here has those.

So yeah I do agree that probably 50% or more here are neurodivergent (a wild guess), but maybe many people think they are neurotypical despite signs pointing otherwise. I've certainly convinced myself of much more significant things with overwhelming opposing evidence. I would argue that whether or not you are under the technical category of neurodivergence is decreasingly important after you leave school, especially if it is support level 1. I also hear it's harder to diagnose in adults though I don't know if that's true or not.

I have not had a similar experience as I was diagnosed before I can even remember, so the question in my mind was never there. I think the diagnosis benefitted me, though opinions seem to vary as to whether a diagnosis is actually helpful or not.