Very common set up around Orange County California 1980 and rural Bloomington Indiana 1983 period. Very interesting set up with mercury vapour bulb open underneath. High pressure sodium vapour lamps were starting to take over at the time cobra head design. I live in now gone SOX territory South Australia very common at the time 1950's until now all LED everywhere. Great presentation from Australia:) Ansett 727.
I have some PENMCO NEMA fixtures. Some are mercury vapor and some incandescent. Some have top mount photo controls, some do not. Good units. I have a rare long arm version of that Sylvania. It is factory HPS and I want to re-ballast to mercury. The existing original ballast is a crappy Advance. I busted the bottom cover screw off trying to take the cover off, I really have a beef with assembling anything aluminum with threads tapped into it without applying preferably silicone grease to the threads. The propensity to seize is always an issue with aluminum which is an evil metal! It is a neuro poison as well, causes Alzheimer’s. At least in a fine filings consistency That ballast may be noisy because it is loose on the mounts. Very common. The windings don’t buzz, the laminations in the iron core do. They can get loose. Cheers! 😋
Love these a lot! Definitely looking forward to tear down and restoration!
Very common set up around Orange County California 1980 and rural Bloomington Indiana 1983 period. Very interesting set up with mercury vapour bulb open underneath. High pressure sodium vapour lamps were starting to take over at the time cobra head design.
I live in now gone SOX territory South Australia very common at the time 1950's until now all LED everywhere.
Great presentation from Australia:)
Ansett 727.
I have some PENMCO NEMA fixtures. Some are mercury vapor and some incandescent. Some have top mount photo controls, some do not. Good units. I have a rare long arm version of that Sylvania. It is factory HPS and I want to re-ballast to mercury. The existing original ballast is a crappy Advance. I busted the bottom cover screw off trying to take the cover off, I really have a beef with assembling anything aluminum with threads tapped into it without applying preferably silicone grease to the threads. The propensity to seize is always an issue with aluminum which is an evil metal! It is a neuro poison as well, causes Alzheimer’s. At least in a fine filings consistency That ballast may be noisy because it is loose on the mounts. Very common. The windings don’t buzz, the laminations in the iron core do. They can get loose. Cheers! 😋
Hey Tyler have you ever heard of a company called Sylvania ? There obsolete now but they made a par 38 mercury lamp a bit back 100 watts ?
I think these mercury vapor bulbs use a quartz envelope