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Sylvania 175 watt metal halide

Sylvania 175 watt metal halide

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this is a sylvania 175 watt mh with a shielded arc tube, I have 2 of these

image~5.jpg image~4.jpg image~3.jpg image~2.jpg

Light Information

Light Information

Manufacturer:sylvania
Lamp
Lamp Type:metal halide
Base:mogul
Fixture
Ballast Type:m57
Electrical
Wattage:175

File information

File information

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Filename:image~3.jpg
Album name:evanchapmanlightman / my lighting
Keywords:Lamps
File Size:495 KB
Date added:Dec 31, 2014
Dimensions:2050 x 2050 pixels
Displayed:82 times
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rjluna2
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Robert


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Jan 01, 2015 at 10:09 AM Author: rjluna2
This one is rated for open fixture.

Pretty, please no more Chinese failure.

evanchapmanlightman
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Jan 01, 2015 at 11:22 AM Author: evanchapmanlightman
Yup, I believe it is commercial grade
streetlight98
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Mike McCann


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Jan 01, 2015 at 12:08 PM Author: streetlight98
Woah! Never seen an open rated lamp witha spiraled wire around the quartz shroud...

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

evanchapmanlightman
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Jan 01, 2015 at 12:16 PM Author: evanchapmanlightman
It helps strengthen the shield even more
streetlight98
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Mike McCann


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Jan 01, 2015 at 04:06 PM Author: streetlight98
That's good. I've seen the shround itself actually explode when the lamp explodes but rarely does the outer envelope shatter when that happens. I'd imagine with the metal spiral, light output is slightly reduced from light loss since light can't pass through the metal. Maybe it's just reflectd off the meal and comes out the other side... I like ceramic arc tube MH lamps best since the color is incredible and explosions are far less likely if they occur at all (usually the arc tube just leaks, which is totally harmless as long as the outer glass doesn't get broken after the lamp is removed). Too bad that CMH lamps are so expensive though.

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

evanchapmanlightman
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Jan 01, 2015 at 04:08 PM Author: evanchapmanlightman
I've always liked the older lamps for some reason
streetlight98
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Mike McCann


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Jan 01, 2015 at 04:19 PM Author: streetlight98
Me too. Older lamps are generally made better. Older lamps tend to have cooler etches too. The 1970s and 80s Westinghouse "CERAMALUX" etches on their HPS lamps is really cool and the etch on the 70s through 90s Sylvania mercs is cool too. The wattage is centered on the knob of the BT lamp in big font. The Sylvania etches from that era wipe off easily though so gotta be careful. Westinghouse and Philips etches tend to disappear after a little while too. GE's seem to hold up with my experience but they would probably wear off after a while too. With a clear lamp you can usually tell the wattage of a HPS or MV lamp by the size of the arc tube but with MHs the arc tubes are similar is size to each other so it's a little tougher.

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

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