No worries!

Canberra is its own council entirely (ACT Government), and Transport Canberra and City Serices (TCCS) owns the streetlights but hires a contractor to maintain the streetlights, the current contract is held by Omexom. I've previously reached out to TCCS about acquiring used streetlights, but unfortunately am not able to get them. I am somewhat in contact with someone from Omexom, but probably wouldn't be able to get one through him.

Try messaging Troy's Street Light Colection on Facebook ( https://www.facebook.com/auststreetlights/ ), he's usually quite generous with his lights and may have one spare.

Other than them, there's no other way to acquire one that I can think of, being a lantern from the 60s and 70s.

I've got metal hat off the top of one, and most of the diffuser, but it's smashed up pretty bad and is held together with tape.

FYI I've got an HW 877 (rebranded as Philips, but has the British Eleco part numbers) in my collection that you can view here. https://www.lighting-gallery.net/gallery/displayimage.php?album=7956&pos=35&pid=256961

Hit me up anytime for any other streetlight identification!

Hope this helps.

The afterglow is not about the lamp itself, but about the various yellow/green/orange stripes and markings in areas like emergency corridors or so (the markings on various obstacles, edges of stairway steps, various safety stickers,...).
The point is, the emergency fixture should not illuminate only in visible, but also in some UVA, so that the safety markings would work as designed when illuminated only by those emergency lights.

@RRK
But shouldn't that only apply to instant-start ballasts? A partially inserted tube on an energized TS/RS ballast shouldn't be able to strike and kill you like it would on a IS ballast because both cathodes aren't warm. Unless maybe the OCV is high enough to strike on only one heated cathode, but that sounds unlikely.

The "not striking" is just not reliable enough to base a human safety on it. It normally does not strike, but some mains spike or disruption (e.g. someone switches some load ON or OFF,...), or even static electrical field outside of the lamp and it strikes with cold cathodes anyway.
For lamp life it is enough such cold starts won't happen too frequently. And that is the criteria how the systems specifications are designed. Not that it should NEVER cold start.
So if you need to ensure people won't get zapped via the discharge in the lamp, the system needs to have some interlock mechanism in it, ensuring the voltage is applied only after the lamp is fully inserted.
For instance the sockets commonly used in Europe for bipin fluorescents allow the lamp to be inserted only when the slit is vertical, but then the contacts to the lamp are not connected. You need to twist the lamp in them to connect the power, but then there are no exposed prongs anymore.
Or electronic ballasts need to sense the presence of at least the cold side filament before they start.
And generally the short pins makes the risk of touching them when manipulating the lamp in live fixture somewhat lower.

With the long pins the risk of someone touching them when manipulating the lamp is way too high, plus the required starting voltage way too high to be really dangerous, the sockets require explicite cutout contacts/switches in the sockets...

Hi, I am looking for a Raymond Industries Wyt-Ray post tops or even just the diffuser. Picture provided to clarify what I am looking for.

Oh that makes so much sense because yes we are in Australia. We are in Victoria. Do you have any ideas where we might be able to find these to purchase? What LGA they are in maybe and I will reach out to that council?
Thanks, this is thr best information we have recieved to date.

This is good to know. Another thing I've wondered... is it possible to run those kind of Metal Halide lamps on ballasts that use mains electricity?
It seems as if those kind of Metal Halide lamps are made specifically for vehicle use only, but I know I could be wrong about that.

They did not promise a halophosphate, but i am not aware of pure bi/triphosphor mixtures that dip below a CRI of 80.
The spectrum also 100% looks like conventional halophosphate - with the exception of that green hump. Halophosphates indeed don't react to UVA at all.

With regards to afterglow - i will verify that tonight. Would be an interesting 'last ditch' effort to allow someone to orient themselves in a fully dark room. If that's the case, it warrants a trip back to Aurora-Kontakt to see if their other modern production "emergency lighting" lamps also have that same effect.

Strontium aluminate - that one seems to have a medium-narrow curve, just dumping this link here to try and download it tonight after work: https://doi.org/10.1007/s10854-022-08902-6

The UVA radiation of emergency tubes is intentional, as many emergency signage paints use "brighteners", compounds that when excited by the UVA radiate in visible and so make them to stand out better. And the UVA emission is intended to excite these pigments.
Plus many signage uses "glow in the dark" pigments, which also get very effectively excited by that UVA.

The main difference towards normal general lighting MH's is the requirement of instant sufficient light output. And that mandates the use of Xenon - a buffer gas that is able to emit significant light output before the halides evaporate. Even when that means the power to a 35W rated lamp has to be boosted to 70..90W for the first minute or so, because the Xenon discharge is way less efficient.

Are you going to bet with your life if tube fill will really strike or not?