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I have a WS467 driving a CFL, which of course does not work. I used a socket/outlet adaptor to parallel a 7W night light across the CFL and the combined resistance of the 7 W night light and the CFL provided enough power to the WS467 that it worked reliably. Cold resistance of night light is probably around 2K.
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FWIW:
I just measured the cold resistance of a few small incandescent lamps with a multimeter:
120 Volt, 4 Watt night light - 335 Ohms.
130 Volt, 5 Watt night light - 354 Ohms.
120 Volt, 7.5 Watt small 1" diameter bulb - 159 Ohms.
130 Volt, 25 Watt "torpedo" shape - 54 Ohms.
130 Volt, 60 Watt "torpedo" shape - 20 Ohms.
I tried hooking the 130V, 25W lamp to a WS467 dimmer switch (2007 "Soft Start" redesign). It seemed to work fine under X10 PLC control, at least in this room temperature environment.
I then tried the 120V, 7.5W on the same WS467. It could also be controlled by X10 PLC, but continued to glow a dull orange when nominally turned Off with either X10 PLC or push button.
Just for the heck of it I tried the 130V, 5W on the same WS467. This lamp couldn't be controlled by either X10 PLC or by push button, but maintained the same dull orange glow.