Two varieties of such lamps exist.
Low pressure sodium lamp fixture.
The lamps are also physically large about 4 feet long for the 180 watt size so light distribution from fixtures is less controllable.
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Lithonia lighting ofl 70s 120 lp bz m4 70 watt high pressure sodium flood light medium base lamp black bronze 4 5 out of 5 stars 16 69 66 69.
Sodium bulbs can last up to 20 000 hours.
Low pressure sodium lamps operate much like fluorescent lamps and require ballast.
Woods l1730 cci modern high pressure sodium security farm light powder coated housing 1 ed17 lamp 120 v 75 w 70 watt 3 4 out of 5 stars 13 71 79 71.
High pressure sodium lights are used for illuminating large outdoor areas.
The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out.
Typically these lights are used on sides of industrial buildings and in some street lamps.
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Existing fluorescent fixture ballast type can be determined by looking at the ballast.
There is a brief warm up period for the lamp to reach full brightness.
Alternatively a cell phone.
Lamptech museum of electric lamp technology sox low pressure sodium.
Bullough lighting design and application september 2004.
Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used.
35 watt high pressure sodium 46 50 watt high pressure sodium 66 70 watt high pressure sodium 95.
A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.
Low pressure sodium fixture top selected products and reviews leviton 8806 bayonet base one piece keyless hid glazed porcelain lampholder white by leviton only 6 left in stock order soon.
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Low pressure sodium lighting is a monochromatic source and is often rejected for its deficiency in supporting color.
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Philips 327817 35 watt t15 sox35 low pressure sodium hid light bulb.
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