I have an exterior light fixture, possibly low pressure sodium
standard screw base 30w bulb, someone put in 100w standard incandesant
bulbs years ago and it works fine. I wondered what would happen if I
put in a cfl, would I blow the cfl circuitry.
Not aware there is a standard base low-pressure Na -- there are some
hi-pressure I believe.
If an incandescent bulb fits the socket, there's no electrical problem
other than whether the cfl is outdoor rated -- think there's a
temperature issue w/ most (if not all, still -- I've not paid much
attention to them so far so what they've done on that score I'm not sure
The voltage across the CFL's base, after voltage drop of the ballast,
may cause the pulse starter for a usual HPS fixture to actuate. The
pulses are something like 3-3.5 possibly 4 kilovolts.
Although the CFL's impedance will probably be enough to load those
pulses down to pretty much nothing, I would not count on it. I would not
want to explain this to my homeowner insurance company if a fire resulted.
- Don Klipstein ( firstname.lastname@example.org)
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