CFL vs Incandescent fixture rating

Modern spiral CFLs draw less current than equivalent-light-output incandescents do, despite these CFLs having low power factor.
One more thing - the usual spiral CFLs are not inductive. Their low power factor is almost entirely from harmonic content in the current waveform, not much from lead or lag. However, the non-dimmable ones are largely incompatible with most electronic switching devices not rated for fluorescents or motors.
For those who are concerned anyway - dimmable versions have high power factor and have recently started to become almost reasonably available, though they are more expensive than non-dimmable ones. I have seen dimmable CFLs at Target for most of this year already.
- Don Klipstein (
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