The abbreviations are CFL - Compact Fluorescent Lamp, MHL - Metal Halide Lamp, HPMV - High Pressure Mercury Vapor, and one more is HPS - High Pressure Sodium lamp
Standard rule, top to the fixture same height as top to the door.
It will draw 150 watts. The capacitor is there only to increase the voltage enough to "excite" the free electrons in the gas to ignite.
Similiar to a flourescent light. The ignitor provides a high voltage potential to excite the sodium gas within the bulb.
277v light fixtures are more efficient to operate and less expensive to install than a 110v fixture of identical wattage. 277v light fixtures are typically installed when 480V 3 Phase primary electric service supplies a commercial or industrial facility. 277v lighting circuits are single phase circuits using one of the 480v primary phases (A,B & C) to Neutral. The higher voltage allows more fixtures per circuit using smaller conductors and longer runs typically required in warehouse lighting applications. ( Amps = Watts/Volts: 400W/277V Fixture = 1.4 Amps, 400W/110V fixture = 3.6 Amps) With 480V 3 Phase primary service, 110V Single Phase power is created using a Step-down transformer. The voltage transformation process consumes power (kWh) and the 277V fixture will consume less kWh than a 110V fixture if identical wattage, especially in fixtures with ballasts such as fluorescent or High Intensity Discharge (HID), like Sodium, Metal Halide or Mercury Vapor.
A 400 watt Mercury vapor light bulb produces roughly 23,000 lumens. In comparison to a 400 watt metal haloid and or high-pressure sodium, not as good. Metal haliod and high-pressure sodium produces 30,000 lumens.
A 250 watt high pressure sodium bulb typically has a lumen output of around 28,000 to 30,000 lumens.
A 250-watt HPS (High Pressure Sodium) bulb typically produces around 28,000 lumens at the initial phase of operation. However, this can decrease over time as the bulb ages.
Compact fluorescent bulbs are widely used because they use one fifth of the electric power to provide the same amount of light as an incandescent bulb. Incandescent: 12 lumens per watt Halogen: 15 lumens per watt CFL: 50-60 lumens per watt LED: 100 lumens per watt High-pressure sodium: 200 lumens per watt
Signs that a high-pressure sodium bulb may be going bad include a decrease in light output, flickering or inconsistent illumination, or a change in color temperature (turning more pink or purple). If the bulb fails to turn on or requires frequent replacement, it may be time for a new one.
220 lumens is equal to a tungsten incandescent light bulb of 15 watts. Halogen lamp 20 watts. Fluorescent lamp 60 watts. LED lamp 60 watts. high pressure sodium vapour lamp 117 watts. Mercury vapour lamp 50 watts or 17.32 candle power
High pressure sodium lamps produce a brighter, more efficient light compared to low pressure sodium lamps. High pressure sodium lamps also have a longer lifespan and better color rendering properties. However, low pressure sodium lamps are more energy efficient and have a monochromatic yellow-orange light output.
It makes your Blood Pressure high by the sodium in it, which is he salt and carbs.
Diets high in sodium may reduce the risk of high blood pressure. Diets low in potassium and high in sodium may reduce the risk of high blood pressure and stroke.
From Wikipedia, high pressure sodium lamps use xenon, whilst low pressure ones use neon with a small amount of argon. See entry for 'sodium vapor lamps'
High pressure sodium light bulbs can be purchased at many retail locations. Some of these include Canadian Tire, Lowe's, Home Depot, and Rona. Acklands Grainger carries industrial high pressure sodium light bulbs as well.
No, you can not use a 150 watt high pressure sodium bulb with a 70 watt ballast.