I'm picturing something you plug an appliance into, that will sense the
load. When the appliance is turned on or off, it sends a UHF-wireless
chirp to a little beeper you can take around the house.
Something that will tell me when the laundry is done :)
Background: i have a gas dryer, which only requires a normal 120V
This is how I do it. It announces over whole house audio.
More complicated than what you're asking for but
hopefully it's helpful.
If you're responsible for that article, not only are you a fucking
idiot, you're also dangerous.
NEC specifies that for a current carrying capacity of 20 amperes, at
least a #12 AWG copper conductor must be used.
Better change that article before you burn some poor fool's house
Professional Circuit Designer
If you use unit ( voltmeter ) you cann controll any device wireless a
I have added optically-isolated sensors in my Dishwasher and Dryer that
signal my home automation system when they are on. A little logic
alerts me to "Open the dishwasher to dry, please", etc.
But that may be much more than you want/need, and it reasonable only as
a part of a larger system.
I understand (Sorry can't point to one immediately) that there are
available "Plug-Thru" sensors that signal when a device is on.
You could hack an X-10 remote to turn on a circuit with a light/buzzer
etc. plugged in.
I don't know of an off-the-shelf transmitter to a 'wearable' alert
receiver... but I bet some else does...
Regards, Terry King ...On The Mediterranean in Carthage
(Back ...In The Woods In Vermont for the Summer)
A better solution would be an AC relay with a coil voltage that
matched the motor in the dryer. Marlin P Jone & Associates
www.mpja.com has one 24 to 140volts
and another for 180 to 280 volts
At $3.95US each, it's a cheap interface.
Use the output contacts to control the X10 PowerFlash or whatever.
Yeppp!!! Known as a Current Operated Switch. Neilsen-Kuljian makes a line of
switches with sensitivities from 1 amp to several hundred amps. Some have both
NO and NC switches in the same unit, with adjustable trip points for each set of
contacts. They're made for On/Off/Overload conditions on motor circuits.
Neilsen-Kuljian doesn't appear to have a web presence, but I found a vendor at
MasonDG44 at comcast dot net (Just substitute the appropriate characters in the
Some days you're the dog, some days the hydrant.
I did. Hooked a current transformer to my water heater. Beeps when
the heater turns on and again when it shuts off. Current transformer
powers the circuit - no separate supply. Also flashes an LED while
the heater is sucking power.
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