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50W mercury vapor pendant light

50W mercury vapor pendant light

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Since fitting my Cooper Lighting bulkhead with a full-power fluorescent lamp ballast to run a 50 watt mercury vapor lamp, I took it back here with me, along with one of my Philips Lifeguard lamps, and an E27-outlet adapter, and I rigged this fixture up to it. It works really well, and puts out a perfect amount of light at 0.43A. I've made this setup semi-permanent, and I've put probably 200 hours on the lamp in this setup so far (for a total usage of probably 300-400 hours on this NOS lamp to date).

Something rather irritating happened yesterday. I came home to find the lamp screwed back into the bulkhead itself, an incandescent bulb screwed into this fixture, and the fixture plugged back straight into the wall. An electrician came by to fix a broken outlet while I was at school, and the proctor and housekeeper let him in (which they're allowed to do, regardless of my absence), and evidently it didn't please him, and he took it upon himself to revert everything to "normal". The proctor told me later that he thought something was wrong, or broken, or something. The housekeeper told me it "didn't turn on" when he flipped the switch, so he thought the bulb was burned out. That's not right because it absolutely would have turned on. Anyway, the thing that scares me most is that he probably plugged the fixture straight into the wall while my mercury vapor lamp was still in it. If he did, thank god it didn't strike. The proctor is himself a mechanical engineering graduate, and finds this setup rather cool. :P

IMG_20190113_214412999[1].jpg IMG_4605.JPG IMG_2694.JPG Mercury_vapor_table_lamp.JPG

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Album name:themaritimegirl / Experiments, Projects, & Mods
Keywords:Lanterns
File Size:249 KB
Date added:Oct 25, 2014
Dimensions:2050 x 1456 pixels
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Peach_Lover
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Oct 25, 2014 at 04:04 PM Author: Peach_Lover
Very frustrating. Glad he didn't kill your MV lamp for you, being an electrician I would assume he would know better. I guess he just figured since it's not a "normal" setup that you'd usually find in a home that it must be wrong. I actually find it ingenuous, since it requires no modifications to the fixture and can be reverted back at any time. Also this type of a fixture is called a pendant I do believe.
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Oct 25, 2014 at 04:14 PM Author: themaritimegirl
Thanks for the info. Yeah, I figure maybe he thought it was an incandescent bulb that had something seriously wrong with it, and so initially (hopefully) replaced the bulb with an incandescent first (which would have lit up normally, even when plugged into the ballast), and then saw that I had the fixture plugged into the bulkhead. He's supposed to be back to fix my outlet sometime, so I'll ask him about it, just because I'm curious of what he thought and did.

Housekeeping comes in here to clean every Monday. I originally planned to just keep this setup as-is and leave it turned on for them when I leave for school, but now I'm thinking I'll revert it to incandescent before I leave for school on that day and then change it back for the rest of the week when I return.

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sol
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Oct 25, 2014 at 05:15 PM Author: sol
Will a 50 watt MV lamp strike on direct 120 volt mains ?

This is a nice setup, something I wish worked on MH as well but I don't dare try it as low wattage would mean pulse start and all that jazz.
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Oct 25, 2014 at 05:32 PM Author: themaritimegirl
It takes multiple attempts, but I have successfully done it before.

Yeah, I've thought about MH, too, and I imagine a standard lamp cord might cause problems with the ignitor.

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Oct 25, 2014 at 05:58 PM Author: sol
You would then need to wire the ignitor in the pendant and use a pulse-rated socket.
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Oct 25, 2014 at 06:10 PM Author: themaritimegirl
It wouldn't still subject the pendant's cord to the high voltage pulses? I don't really know how ignitors work.

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Oct 25, 2014 at 06:32 PM Author: sol
I wouldn't do it either. I've thought about permanently converting a pendant to MH, but with new wiring etc. Never gotten around to it, and I now have a proper 35 watt CMH fitting although it is not in use at the moment. Some of our UK members have done a conversion with Ikea floor lamps converted to MH with an added ignitor and the existing wiring all with satisfactory results, though.
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Oct 25, 2014 at 07:20 PM Author: suzukir122
Wow... Man this is so funny, because I also recently dealt with a situation in which people walked into my apartment despite me not being there. In my scenario, however, it was the landlord. I also have lighting set up (which I'm in the process of uploading) that I'm very sure the landlord and inspector have seen, since I keep the lamps lit. I don't talk much to my landlord though, and I'm not a fan of the fact that they walked in without my knowledge.

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Oct 26, 2014 at 12:14 PM Author: BG101
This is one of the downsides of renting, no entitlement to privacy .. one of the most basic human rights IMHO. I'd attach a warning label just in case.


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Oct 27, 2014 at 06:53 PM Author: themaritimegirl
Electrician comes in tomorrow, and I will be home. This setup WILL be running, so I'll see what he thinks of it...

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Oct 27, 2014 at 07:31 PM Author: TheUniversalDave1
Make sure the electrician knows exactly what is going on! Be sure to tell us the outcome.

"If people only knew how much I secretly hated them, they'd love me for holding it in." -Matt Groening

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Oct 27, 2014 at 07:38 PM Author: suzukir122
Yeah I'm interested to know what happens as well!

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Oct 28, 2014 at 09:25 AM Author: themaritimegirl
It's all good. They were just so confused when they first saw it. You can listen to our exchange here:

https://www.youtube.com/watch?v=LnruZD_zFPc

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Oct 28, 2014 at 10:12 AM Author: suzukir122
Haha Sounds like it went smoothly. The electrician sounds like a cool guy as well lol... I'm interested in mercury vapor lamps as well, so I'm likely gonna get a self ballast mv lamp at some point in time inside a table lamp. I'm also making plans on getting an HID flashlight, and HID headlamps for my future motorcycle. Not much relation there, but close enough. 😎

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2. Weighting/staying extremely athletic
3. Severe Thunderstorms of all kinds
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Oct 30, 2014 at 04:18 AM Author: eclipsislamps
I wish my mother was that understanding with my jobs

Keeping electrodes hot and gases ionzied.

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Oct 30, 2014 at 05:08 AM Author: FrontSideBus
The only problem I've had with converting domestic fitting to HID, was when I did a 500w halogen floor standing uplighter to 70w halide. The capacitance in the cable was absorbing the ignition pulses and I could not get reliable ignition until I replced the twin-core cable with singles. Didn't have any problems with the other floor lamps so it's down to the fitting.

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Nov 02, 2014 at 08:31 PM Author: ace100w120v
That's really hilarious overall! Not sure what I would do if I walked into a college apartment and saw that...I'd probably leave a note saying how cool I thought it was! (and my LG handle).
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Nov 02, 2014 at 08:58 PM Author: themaritimegirl

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Nov 02, 2014 at 09:19 PM Author: streetlight98
Nice! Way cooler than your average chandelier fixture.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

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Nov 02, 2014 at 09:40 PM Author: funkybulb
Lol very funny and good work here

No LED gadgets, spins too slowly.  Gotta  love preheat and MV. let the lights keep my meter spinning.

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Aug 03, 2015 at 07:57 PM Author: Alights
Awesome setup! Similar to what I have over my desk at home,but with 50W MH ballast and 75W /DX MV lamp. I like the mini highbay look of these fixtures
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Aug 03, 2015 at 08:09 PM Author: themaritimegirl
Thanks! I wish I could have kept this setup, but after the whole thing with the electricians I wasn't really comfortable with leaving it alone anymore. Unfortunately with this place you never know when someone is going to enter your room while you're gone for whatever reason. I think now I would find it a bit too bright, anyway.

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Aug 03, 2015 at 08:12 PM Author: FGS
Twist-lock plugs and receptacle on the cords between the fixture and ballast solves that. Keep them from trying to plug the fixture into the wall.

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Sep 04, 2015 at 07:49 PM Author: Lumex120
Nice. I wonder how this would look with a clear lamp? Also, I have that same printer...

Any machine is a smoke machine if you operate it wrong enough.

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Sep 05, 2015 at 11:32 AM Author: rjluna2
That is a cheap HP DeskJet printer, Zarlog

Pretty, please no more Chinese failure.

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Sep 05, 2015 at 11:41 AM Author: themaritimegirl
Cheap!? That printer is from 2000 and cost $250 when it was new. It's a tank compared to the flimsy crap on the market now.

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Sep 05, 2015 at 12:05 PM Author: Lumex120
I know. I have printed over 200+ black and white pages and am still on one cartridge. The color cartridges don't last long at all, but black? vary long lifespan. Also, I got it at Goodwill for $10.

Any machine is a smoke machine if you operate it wrong enough.

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Sep 05, 2015 at 03:28 PM Author: themaritimegirl
Indeed. And cartridges are cheap when you get NOS ones on eBay. My high school math teacher gave me mine, a few years ago now.

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Sep 06, 2015 at 02:54 PM Author: rjluna2
You know when these printer are cheap to buy, but boy, these ink cartridges are expensive

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Sep 06, 2015 at 02:58 PM Author: Solanaceae
While we're on the topic of printers, I got an hp office jet pro 8610 yesterday. It is a great unit, and we bought a 100 page ink plan, which notifies hp if we run low on ink, and they send it to the doorstep. It'll save us half on ink. Pretty nifty, eh?

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Dec 01, 2017 at 07:50 PM Author: sol
Welcome back !
Have you found a new place to hang this pendant, and is it still MV ?
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Dec 01, 2017 at 08:54 PM Author: themaritimegirl
Thanks! I not really "back" per se, as I haven't played with lighting stuff in a long time; I just wanted to share the neat germicidal lamp I got ahold of.

I don't live here anymore, so the pendant is not a thing anymore, but my 50W MV fixture itself is still intact and functional.

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