mdcastle
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| I'm replacing a post light that has clear glass and 3 X 40 watt candelabra incandescent bulbs with one that has honey glass and a single E26 socket. Unfortunately the honey glass soaks up 3/4 of the light. It seems the only way to create the same amount of light with more energy efficiency is one of those high powered corn-cob LEDs you see on eBay. Anyone actually try one of them?
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wattMaster
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| It seems like they are hit and miss, some are actually good, and others are shockingly bad.
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Lumex120
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/X rated
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It seems like they are hit and miss, some are actually good, and others are shockingly bad.
Literally, shockingly bad. If I were you I would get the enclosed time. Do they run dusk to dawn? |
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Ash
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| As Zarlog mentioned, some of them also have live exposed connections on the outside. But lets say that is not as big problem when the lamp is not accessible. The other problem is that basically all electronics sold on Ebay are fireworks
Now really, outdoor post with E26 socket and wanted bright light ? Thats for HID
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mdcastle
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| I thought about seeing if there was another 70 watt ceramic metal halide track light at Ax-Man I could gut, but that's really more watts than I want, the lamps are expensive, and I worry about an exploding lamp damaging the glass of the fixture. It's thin decorative glass.
Also the socket is not pulse rated so I'd have to change out the socket.
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Lumex120
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/X rated
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I thought about seeing if there was another 70 watt ceramic metal halide track light at Ax-Man I could gut, but that's really more watts than I want, the lamps are expensive, and I worry about an exploding lamp damaging the glass of the fixture. It's thin decorative glass.
Also the socket is not pulse rated so I'd have to change out the socket.
They rearranged the store and they no longer have the track lights.  Maybe you could convert it to 50w MH and use a coated quartz lamp? the color is the same as incandescent. |
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Ash
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| I was thinking more like 100W Mercury lamp. But MH and HPS are good choices too
If the socket is Ceramic and have all the needed clearance/creepage distances where needed (between terminals, between terminals and Earthed mounting screws/bracket, and so on) then it would be fine for Pulse start even if not specifically Pulse rated. Its the wiring i'd be more worried about. Place the ignitor or all the gear in the luminaire, so that only the short wire to the socket gets the pulse
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AngryHorse
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Rich, Coaster junkie!
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| Also some people don`t realize that corn cob lamps have to be run in `open` fittings so as not to overheat them!
With 3 x 40watt candle GLS, you have a max lumen output of about 1170 lumens, a single higher powered CFL would suit better, say 35watt?
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« Last Edit: August 20, 2016, 11:45:56 AM by AngryHorse »
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Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED (gen 1)
Longest serving LED in service at home, (hour count): Energetic mini clear globe: 54,050 hrs @ 10/2/24
Welcome to OBLIVION
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wattMaster
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AngryHorse
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Rich, Coaster junkie!
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| But it will be mounted cap down in the light in question, keeping the heat away from the gear housing?
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Current: UK 230V, 50Hz
Power provider: e.on energy
Street lighting in our town: Philips UniStreet LED (gen 1)
Longest serving LED in service at home, (hour count): Energetic mini clear globe: 54,050 hrs @ 10/2/24
Welcome to OBLIVION
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wattMaster
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But it will be mounted cap down in the light in question, keeping the heat away from the gear housing?
If it's totally enclosed, don't mess around with self ballasted CFL. |
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Ash
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| The lantern have some thermal "transport capacity" (whether by thermal conductivity, or convection) from inside to out, whether it is enclosed or not, its just the quantity that varies. If it is sufficient to take out the power dissipated by the lamp while keeping the temperature inside (Ta for the lamp) low enough, then it is ok..
By eye i'd say this is ok for about 18W..20W CFL max, if never left dayburning. But i'd too prefer something more thermally robust inside
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wattMaster
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| Maybe add a couple of heatsink fins to the fixture?
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Ash
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| I dont think it'd have big effect in this lantern
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hannahs lights
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Corn cob lights are best avoided our local bus garage had them installed last year and within 8 months about a third of them were partially out they run from 7 am thru till around 11pm the fluorescents in the same garage are still bright and looking good http:// |
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