430 posts tagged with electricity.
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Is my new (aftermarket) power adapter safe for my laptop?

Can I damage my laptop by using a power adapter that has a slightly higher wattage than the original adapter? The original adapter was 65W, and the aftermarket one is 70W. The voltage is switchable. My original adapter had a voltage of 18.5V, this one says that if I need 18.5V, I should choose 18V. Any chance of damaging the computer by using this one? [more inside]
posted by leticia on Nov 13, 2008 - 8 answers

When exactly did the city of New Orleans lose power during Hurricane Katrina?

I'm trying to find out the date and time that the city of New Orleans lost power during Hurricane Katrina. A customer service representative at Entergy told me that it was staggered throughout the morning of August 29th, the day the storm hit Louisiana, but I would really love more specific information. After searching news archives and situation reports, all I've found so far is that the Superdome lost power at 5am that same morning. Where can I find the time and date?
posted by easy_being_green on Nov 7, 2008 - 2 answers

Charge me up, just don't charge me a lot

Does anyone have any recommendations on the best power companies to use in Houston, TX? [more inside]
posted by arcticseal on Nov 6, 2008 - 3 answers

Puddle-Related Power Failure?

What happened to my car? What did I do when I drove through that puddle? [1999 Ford Taurus] [more inside]
posted by rossination on Nov 5, 2008 - 8 answers

Ask not for whom the motor turns. It turns for thee!

How do you control the speed of a 3-phase AC induction motor? [more inside]
posted by spacewrench on Oct 9, 2008 - 2 answers

Sun as electrical plasma

Having watched Thunderbolts of the Gods, and found it quite eye-opening, I'm wondering if there are compelling reasons to accept or not to accept the possibility that the Sun is made of electrical plasma, rather than being a nuclear furnace.
posted by Tarn on Oct 2, 2008 - 11 answers

How much electricity is my AC unit using when it's on "fan"?

Does my window air conditioner use just as much electricity on the "fan" setting as it does on the "cool" setting? [more inside]
posted by amro on Sep 28, 2008 - 7 answers

How to prevent plastic roll static shocks?

How can I ground a large roll of plastic wrap to prevent static electric shocks when unrolling it? [more inside]
posted by attercoppe on Sep 25, 2008 - 7 answers

What can cause a house's lights to flash?

What can cause a house's lights to dim and flash? [more inside]
posted by Nelson on Sep 8, 2008 - 7 answers

Does carbon trading make a difference?

Why should energy supply companies bother making people houses greener when they are essentially reducing demand for their good? (quite a UK based question) [more inside]
posted by henry.oswald on Sep 8, 2008 - 11 answers

What does it take to convert a house from natural gas to electricity?

What does it take to convert a house from natural gas to electricity for the stove, dryer, hot water tank, etc.? [more inside]
posted by AllieTessKipp on Sep 5, 2008 - 18 answers

How can I reduce my electric bill?

First time living alone, and just got my first electric bill... what's using so much power? How much power does my computer really use? [more inside]
posted by Kosh on Sep 4, 2008 - 35 answers

Why does my Mac power adapter spark?

When I plug my MacBook Pro Power Adapter into most/all outlets, I see a blue spark as the prongs enter the outlet. Is this normal? [more inside]
posted by plasticbugs on Aug 17, 2008 - 10 answers

Need some help with electrical sums

Need some help working out electrical sums. [more inside]
posted by deeper red on Aug 15, 2008 - 12 answers

Why is my cooktop shocking me?

My cooktop is shocking me. What's wrong? [more inside]
posted by condour75 on Aug 6, 2008 - 4 answers

How do national grid forecast demand acturately

How do national grid forecast demand acturately? [more inside]
posted by henry.oswald on Jul 31, 2008 - 7 answers

Garage circuit breaker problems.

Garage circuit breaker keeps tripping... [more inside]
posted by starman on Jul 14, 2008 - 11 answers

Compact Florescent Lifespan

My family's been wanting to upgrade to compact florescent for years, but we've always found they burn out quickly thanks to our flaky power surges. Would dimmable bulbs be helpful, or is there some sort of inexpensive power conditioning that can be added to light sockets? [more inside]
posted by mccarty.tim on Jul 10, 2008 - 9 answers

This shouldn't be happening.

Help me diagnose repeated failure of my lighting dimmers. [more inside]
posted by jon1270 on Jun 26, 2008 - 20 answers

Drill It Into My Head

Help me understand electricity and physics and how they apply to motors. I have my head around electricity basics and electromagnetism, but I have a few unanswered questions about the more subtle aspects. [more inside]
posted by kaizen on Jun 22, 2008 - 11 answers

Help me not die in an electrical fire.

What is wrong with my electricity? Lights started to flicker, circuit breaker didn't trip, circuit started to buzz, now afraid the house is going to burn down. [more inside]
posted by quin on Jun 19, 2008 - 16 answers

Help me not blow up my gear

I need to work out which of my DC adapters powers my devices - I don't want to damage anything. [more inside]
posted by chairish on Jun 14, 2008 - 13 answers

Why doesn't wattage equal amperage times voltage?

Another air conditioning question for the summer! 4.8 A *110V=515W? [more inside]
posted by phoenixy on Jun 10, 2008 - 12 answers

Watts a volt, anyway?

Can anyone help me figure out what kind of power source I need for my outdoor art project? [more inside]
posted by xo on Jun 5, 2008 - 10 answers

Better pain management through electricity

Kinkyelectricsex: My partner wants to bring a TENS machine into the bedroom. How safe or dangerous are these things? [more inside]
posted by anonymous on Jun 3, 2008 - 7 answers

Testing a Hunter attic fan controller?

How do I test a Hunter attic fan controller? I want to be thorough before I climb in the attic. [more inside]
posted by notsnot on May 20, 2008 - 6 answers

Can the electricity company charge a deposit regardless of credit?

I am new to renting and I just called the power company and they said that I have to pay a deposit no mater what my credit is. Is this normal practice? [more inside]
posted by stevechemist on May 16, 2008 - 31 answers

Press Button to Cross

How does the button on the pedestrian crossing lights work? Does it actually send some sort of signal to the traffic lights, or is it just a psychological thing? It seems rather random timing-wise.
posted by divabat on May 14, 2008 - 21 answers

should we switch to a green energy provider?

Should I have our small business switch to a third party green energy provider? We had a salesman for Accent Energy come to our door and he was a bit shady so I told him that I wanted to look into this on my own time. But from what I'm reading online it could be a great way to convert to a more environmentally responsible energy solution. And its Earth Day today too. Our company wants to do what we can to be "green" and we would even pay slightly more to do so, but if a switch to a third party will cost three times as much then we just cant do it. [more inside]
posted by minicloud on Apr 22, 2008 - 2 answers

Buying an Oscilloscope

I'm an electrical engineering student/hobbyist looking to buy an oscilloscope. I'd like to spend around $200 ($300 max, probes/shipping included). What should I look for, and where? [more inside]
posted by phrontist on Apr 16, 2008 - 10 answers

Do third party hydro providers save you any money?

Has anyone tried using a third-party hydro provider? What are your experiences with it? [more inside]
posted by perpetualstroll on Apr 8, 2008 - 10 answers

Can you short a connection using a staple?

Can you short connections on a PCB using a staple? [more inside]
posted by secret.osha on Apr 6, 2008 - 6 answers

Plug safety

If a plug is not fully in its outlet, and you touch one of its prongs, will you get shocked? [more inside]
posted by cgs on Mar 31, 2008 - 32 answers

A shocking experience...

How much current flowed through me when I was shocked? [more inside]
posted by FergieBelle on Mar 14, 2008 - 19 answers

Trying not to fry them

Plug adapter for Argentina and Uruguay? [more inside]
posted by Bezuhin on Mar 4, 2008 - 7 answers

How do you -really- ground yourself?

Help me clear up my understanding of how to ground myself when working on my computer. [more inside]
posted by GleepGlop on Feb 28, 2008 - 14 answers


Working on DIY solar charger from modified garden power lamps. Of course the panels look different than the ones in the pictures! [more inside]
posted by aetg on Feb 17, 2008 - 6 answers

What should a homeowner know about electricity in the home?

What should a homeowner know about electricity in the home? [more inside]
posted by Brandon Blatcher on Feb 12, 2008 - 12 answers

Where is the switch?

Why do some electrical appliances lack an on-off switch? [more inside]
posted by Tube on Feb 8, 2008 - 23 answers

I want to turn you on!

Why won't CFLs work in my fixture? [more inside]
posted by Shebear on Feb 1, 2008 - 9 answers

Am I saving a ton of cash by using Starbucks' power?

How much money am I costing, say, Starbucks if I charge my laptop there every day? [more inside]
posted by terceiro on Jan 28, 2008 - 14 answers

My touch lamp has the same vibrating static electricity feeling that my massage clients used to have. Why?

My touch lamp has the same vibrating static electricity feeling that my massage clients used to have. Why? [more inside]
posted by kristymcj on Jan 28, 2008 - 7 answers

Why doesn't ComEd know where I live?

I need help sorting out an issue involving my electric company, my electric bill, and the other apartments in our building. [more inside]
posted by youngergirl44 on Jan 19, 2008 - 5 answers

How can I keep my track lighting from catching fire?

You are an electrician. But you are not my electrician. Question about low-voltage track lighting system inside. [more inside]
posted by ook on Jan 17, 2008 - 9 answers

Looking for a smart power strip.

Looking for a smart surge protector that shuts down peripherals when a computer is turned off or asleep. [more inside]
posted by floam on Jan 14, 2008 - 7 answers

I just want to plug things in

I have a light switch on the wall that controls both an overhead light and an outleft. I'd like it to only control the overhead light, while still sending power on to the outlet. [more inside]
posted by donnagirl on Jan 3, 2008 - 16 answers

Residential Electricity

Residential Electricity: Is it possible to measure current flow through romex in a non-invasive manner? [more inside]
posted by allelopath on Jan 2, 2008 - 16 answers

How can I use this UK appliance in the US?

British appliance, US power: can they find happiness together? [more inside]
posted by bac on Dec 9, 2007 - 15 answers

Anyone know a simple and cheap solar panel setup to run a small boombox about 9-12V DC?

Anyone know a simple and cheap solar panel setup to run a small boombox about 9-12V DC? [more inside]
posted by Bengston on Dec 4, 2007 - 3 answers

Crazy brain stuff going on.

Amateur neurologists, please read! What is going on in my head?? [more inside]
posted by missuswayne on Nov 17, 2007 - 19 answers

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