General Question

azwilson's avatar

If a lightbulb is out, but the power is still switched on, does it still use the electricity?

Asked by azwilson (35points) September 28th, 2008 from iPhone

security lights are a good example…. When the pir is triggered, does it start consuming power?

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9 Answers

Fieryspoon's avatar

When the switch is off, it’s causing the circuit to be incomplete to the associated sockets.

A light bulb works by sending an electrical current through the bulb’s filament. When the bulb burns out that’s actually the filament breaking, and so the electrical current can no longer go through it. So it’s essentially the same thing as having the switch off, albeit farther down the line.

simone54's avatar

Now. What about electrical kitchen appliances?

ckinyc's avatar

I think any appliances will draw a small amount of electricity if they have some kind of mini computer inside to track time or keep the machine in stand-by mode.

gailcalled's avatar

@^^ True. It is a good idea to unplug anything you can – toasters, small appliances, boom boxes, hair dryers, curling irons,irons, cell phone chargers, heating pads, etc. All appliances have a small draw. All sites I read agreed. Here is one sample answer

sarapnsc's avatar

Yes, absolutely….as long as your electricity is working, no matter if you switch the appliance off or the light bulb is blown, the electricity is still going.

You should turn off/unplug as many appliances and electronics as you can. For example, using the remote control to switch off appliances like your TV and video doesn’t stop them from using power if there’s a red light or timer display showing, it’s still drawing electricity. Using the remote only puts appliances in stand-by mode.

I have a wall switch on every wall in every single room in my home. For example, once I leave my kitchen, I hit the switch, it turns off every electrical plug in my kitchen, it keeps me from unplugging my appliances constantly (I do have to reset my clock on my stove & microwave, which can be a drag.) Same thing goes for my living room, tv, dvd, lamps. The only thing not on that circuit is my computer which I have a surge protector and I cut it off seperately.

So, if your electricity in your home is running, the appliance you have plugged in to your electrical outlet is still using electricity, even if it is in off mode, then it is causing you to pay more money to the electrical company.

ckinyc's avatar

for faster and easier complete switch off. Try set up home automation system such as X10. The remote usually has a All Off button.

gailcalled's avatar

I am spooked when I turn off all the lights and see the little red or green lights shining….On burglar alarm, on motion detectors (part of alarm system), on stove’s and MW digital clocks, on surge protectors, on clock-radio, on iMac in sleep mode. I have unplugged all clock radios in guest rooms but need the rest.

@Sarapnsc: Did you have an electrician install those master switches, did they come with the house, or did you do it yourself?

sarapnsc's avatar

@gailcalled, sorry, I don’t know how long ago you asked this question to me. Just now seen it. The electricians did it, when our home was being built.

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