I have a 100 watt mercury ballast, CWA type with a capacitor rated 10 MFD, 280 VAC. If I use a smaller size capacitor, 7 MFD, could I use this ballast to...
... Nobody's answered this yet? While I can't tell you with certainty what will happen, I do encourage you to try it and see. The lamp current you're looking...
... rated 10 ... use ... encourage ... lower so ... a ... smaller ... with ... I have some 50w and 75w mercury lamps. The T-8 ballast with the matching...
I can't see any reason why not. They get 700 watts from a 1000 merc ballast by merely using 7 Uf less of capacitor. You could try a 5, then a 7. I'm assuming...
New group for streetlight photos: http://groups.yahoo.com/group/vintage_streetlighting/ There should be almost 30megs of photo space there. Thanks, Marvin ... ...
As of today, my streetlight collection is complete (for now?) I've always loved streetlights, but I never thought that I would ever have ANY of my own. As it...
... <snip> Great collection, Alain! ...and good display, too...it reminds me again how good the few lights I've got would look if I pulled my finger out and...
I recently purchased a friends ham radio estate & made an interesting find. It's a PEMCO 468(?) suspension luminaire. Nameplate on it reads: TUNGSTEN ARC LAMP ...
Update on those Chinese mercury lamps with similar colour to /W mercury: I visited their plant last week and the phosphor being used is indeed the usual...
I have a vintage glass globe on Ebay, Item number: 6169756163 and I do not have any idea how old it is. Any help would be appreciated to identify it so that I...
Is there any difference between quartz & ceramic arc tubes regarding arc tube explosion at end of lamp life? Would the ceramic arc tube rupture with more or...
... Not significantly, both can rupture violently if run well past their rated hours. It's best to simply replace the lamps when they've depreciated past their...
Ceramic arc tubes are much less likely to fail in such a violent manner. The primary failure mechanism is that the metal halide salts will corrode their way...
Hallo - I have to admit that I've joined this group mainly to do some brain-picking. Please help - I need some expert knowledge! I've posted a picture in '...
... I don't remember what highway it was on but it was down south someplace between Fircrest and Tacoma. It wasn't actually fallen, but it was one of several...
... If it was on a freeway, then it may have been SR-16 (I don't think there's been any recent construction in that area along SR-167, SR- 512, or I-5 where...
... I'm sure Alain will be able to confirm the location next time he's online. The poles were laid down next to an offramp, I saw them there while we were on...
Wow cool photos Alain, thanks for sharing them! I was luck to get 2, Line Materials Sphiro Lite Jr's this week. A friend of mine got them off an old building...
Hi Andy, I've added photos of the Spherolite Jr's to the album call "Sphirolite Jr". Thanks for your interest. As you can see, one of them was missing the...
I think they were on I-5 - possibly at the S 56th or S 72nd St interchanges/exits...I am not certain, as I didn't track the location (I wrote down locations of...
... I looked at the WSDOT page to see if there was any construction in that area recently. Only thing I found was widening for HOV lanes (which involves...
... Was it the one on Pearl (Westgate area) or on Bridgeport (University Place)? If it was either of those, then it was probably on SR-16 where those lights...
Yes I believe you are correct, this was at Pearl. It definitely was along Hwy 16 - we were on our way to visit Fircrest and the 175w GE power pack lights,...
... Underneath the deck of the Murray Morgan (11'st St) bridge, there's some wire-hung lamps sans globes. I'm not sure what model they are. There's also...
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