Famous High Pressure Sodium Light Fixture Ideas. Web high pressure sodium lights are used for illuminating large outdoor areas. System watts is the combined wattage of the lamp and the electricity used by the ballast.
The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out. Web high pressure sodium lights are used for illuminating large outdoor areas. Lumen output maintenance rate ≥95% after 10000 hours.
