Quote:
Originally Posted by getdul981
The type of bulb you use should have no bearing on the photocell. All the photocell does is close the circuit when the light gets low enough. We have CFLs in our yard light and the outdoor lights at the garage and front door. They have all been in use for almost 2 years.
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Not exactly true. Some photocells actually start to slowly increase the voltage to the lamp and not just suddenly snap on. You can see examples of this ramping up in the way Mercury Vapor type bulbs in street light flicker before they come on. CFL's do not react well to a ramping up of voltage.
Intermatic Dusk-To-Dawn Photocell Light Sensors - Twist Lock and Surface Mount Photocell Sensors and Mounting Sockets at Green Electrical Supply