Half of my house has lost power. The breakers are fine. You're not my electrician - I just want to understand what the problem is or might be. [more inside]
posted by amy lecteur
on Apr 4, 2014 -
For the third time in a row in the past few months, the power supply on my Xbox 360 has gone to the solid red light. This one was a brand new one, new in the box; the previous two were pre-owned ones from Gamestop. Of course, in each case, it happens right out of warranty, and they are not cheap ... [more inside]
posted by jbickers
on Mar 10, 2014 -
It's generally advised to leave as much behind as possible when moving abroad, but my wife's employer is paying to have a decent amount of our household stuff transported from the US to the UK. And why would we want to waste money buying duplicate items if it isn't necessary and we probably won't be staying more than a couple years? So I'm trying to figure out which of our electronics and appliances might be made to work overseas.
I am aware of the voltage difference and the line/mains frequency difference between the US and the UK and I'm considering buying one or two good-quality step-down voltage converters for things that aren't universal voltage compatible. But I have some questions that my Google research has not cleared up. [more inside]
posted by theory
on Feb 18, 2014 -
I want to hang a fluorescent strip light above my workbench. How can I do this? [more inside]
posted by Caskeum
on Feb 15, 2014 -
Or what do I have to look for on a portable generator to recharge my camera and tablet. [more inside]
posted by Fermin
on Feb 11, 2014 -
Last night, at an otherwise excellent show, my electric bass amp died. Power was on, amp was off, and would not turn on any longer. In the middle of a song. This would be fine, but: this is my third amp that's died in three years. What's up? [more inside]
posted by tmcw
on Feb 6, 2014 -
I need some help figuring out the wiring in my switched ceiling junction box in order to connect a basic light fixture. In the box I have three pairs of black/white wires and one yellow wire. My fixture has one pair of black and white wires. [more inside]
posted by stopgap
on Jan 31, 2014 -
Please help me figure out how to heat my drafty San Francisco 1-bedroom apartment without breaking the bank. Details inside! [more inside]
posted by Amplify
on Jan 10, 2014 -
This is just a thought experiment at this point, and probably will remain so. In the back of my mind I have the idea that when my old SUV finally gives up the ghost I might rip out the internal combustion drivetrain and convert it to an electric vehicle, possibly with a removable range-extender generator. Setting practicality aside for the moment, can you help me envision what this would involve? [more inside]
posted by Scientist
on Jan 2, 2014 -
Help me understand why the energy company seems to (somewhat randomly) choose to estimate my energy usage rather than billing me for actual usage. [more inside]
posted by raspberrE
on Dec 28, 2013 -
is this ConEd solutions
on the level, as providing more eco-friendly electricity than my regular Con Edison provider? What are the pros and cons? The agent who is trying to sell me this says my bill will go up a little. This is for residential usage in New York City.
Any experience or information on this is much appreciated.
posted by DMelanogaster
on Dec 21, 2013 -
I just moved into a new room in a shared house, only to quickly realize none of the outlets in my room (except for one) is 3-Pronged. Until an electrician comes in to update it, how can I hook up my computer equipment safely? [more inside]
posted by hellojed
on Dec 8, 2013 -
What are some books (or other resources) that would help me understand electricity and hobbyist electronics without a hydraulic metaphor? [more inside]
posted by ddbeck
on Oct 9, 2013 -
What is "electric potential"? I've dug through the internet, gone to tutoring, asked my teacher, and nothing has helped. [more inside]
posted by runcibleshaw
on Oct 3, 2013 -
I'm interested in purchasing electricity that comes 100 percent from renewables. I need to understand the costs, but I'm confused. Help me understand the cost of purchasing electricity from renewable sources. [more inside]
posted by Tehhund
on Sep 24, 2013 -
I bought a light fixture yesterday at Ikea and I was all like YEAH THIS IS GOING TO BE SO EASY. Ha. Can you help me not die? [more inside]
posted by kbanas
on Sep 15, 2013 -
My mom uses AEP electric and her bill is pretty outrageous, but she doesn't want to cut down on her usage. I think I have seen advertisements before, for some no name company that will provide the same electricity for 10% to 30% cheaper. Who was it and is it legit? What are my other options for switching electric companies/lowering my electric bill. I already had her sign up for low income assistance
posted by crawltopslow
on Aug 23, 2013 -
I'm in over my head on a DIY project involving electrical terms I don't understand. I want to use a solar panel to power both a water pump and a computer fan, and need to know if this is possible with the components I have, and if possible how can I splice/connect these non-matching wires? [more inside]
posted by croutonsupafreak
on Aug 19, 2013 -
I am traveling to Chennai, India this October. I will be bringing my Mac Book Pro and assorted accoutrements (iPad, iPhone, etc.) with me. Does the Apple World Travel Adapter kit
provide connectivity to Indian electrical power outlets? If not, what does?
posted by dfriedman
on Aug 9, 2013 -
There was a huge lightning storm this morning, in the middle of it my power went out.
All the breakers on my boat are on, all e breakers on the power bollard are on.
The odd thing is that the bollard has power to the meters and register 5v on the ac setting of my multimeter across live and earth.
Also the RCD buttons trip out the breakers. This suggests that it has power. But nothings coming out.
Any ideas for
a) How come it has some power but no output
b) Is there anything I can do.
My electrical skills = I own a nice multimeter
My fear of zappy death = relatively high [more inside]
posted by Just this guy, y'know
on Jul 22, 2013 -
We had an electrical incident where I work a couple of nights ago, and I'm trying to wrap my brain around it. Our house engineers have maintained systems at 150 amps on legs with 200 amp fuses. The power company reported a power dip, shortly after which we blew two of the 200 amp fuses. What happened? We had a drop in available voltage, so our amperage demand shot up? [more inside]
posted by nevercalm
on Jul 17, 2013 -
We've had PG&E SmartMeters installed at our building for awhile, and our landlord is very concerned about the health risks and surveillance risks he believes they pose. He's sent us a bunch of "literature" to read and it all reads like wackadoodle conspiracy theories with no basis in science, as does everything else I've found online. As easy as it is to just roll my eyes and dismiss his concerns, I feel like I should make a good faith attempt to discover if there's really anything to be concerned about. Are there any good, reality-based reasons to be anti-SmartMeter? Any science-based studies from reliable sources on their safety? Any well-thought-out articles on the subject that don't include the phrases "molecular earthquakes" or "like hundreds of cell phones being on at the same time"? Help a skeptic out!
posted by rhiannonstone
on Jul 14, 2013 -
I just got an automatic watch and the fact that it powers itself via small movements of my wrist has me fascinated, and also puzzled that we haven't really taken more advantage of obtaining small amounts of power via changes in kinetic energy (if thats the right term?) [more inside]
posted by Admira
on Jul 10, 2013 -
I once read a great article explaining why we use polarized plugs, grounding, and GFCI outlets in household AC circuits. It was written from the perspective of an electric company whose customers keep getting electrocuted by their appliances. The company introduces the safety measures one by one and the article explains how people still get shocked. It might even have been a comment on Metafilter; I'm not sure. Where can I find it?
posted by scose
on Jul 7, 2013 -
I just plugged in my Craigslisted electric smoker for the first time and it melted my (short, heavy duty, indoor/outdoor, properly rated) extension cord. Do I buy another extension cord and try again, or is this thing a fire waiting to happen? [more inside]
posted by rossination
on Jun 29, 2013 -
I have a multimeter, and a I have a hub dynamo built into my bike wheel.
I want to attach the multimeter probes to the wires that power my front light, and see what, if any, power comes through those wires when I spin the wheel.
What do I set on the multimeter to see that happen? PS: I know nothing
posted by sandettie light vessel automatic
on Jun 20, 2013 -
An Australian start-up, wattcost.com
, is developing a "clip-on current transformer" device for analysing energy usage via domestic electricity meters. Is this real technology, or vaporware? [more inside]
posted by infinitejones
on Jun 5, 2013 -
I just bought a subwoofer from a thrift shop, but unfortunately the power adapter (13.5 AC in) is missing. My neighbourhood shops seem to be fresh out of adapters with that voltage, so I'm wondering if it would be possible/safe/advisable to use a different adapter? I have several lying around the house with output voltages ranging from 5 to 16V.
posted by The Card Cheat
on May 27, 2013 -
New York City dwellers: Do you use Green Mountain Energy for your household power? Why or why not? [more inside]
posted by greta simone
on May 21, 2013 -
I'm moving to Germany in a couple of months and have a few questions about using various 110V US-purchased appliances on the local 220V power. Specifically the 50Hz/60Hz issue - how big of a deal is it? My understanding is that anything with a motor may have a shorter lifespan and run somewhat less efficiently (and of course anything that uses AC for timing will run slow), but any other issues? [more inside]
posted by photo guy
on May 13, 2013 -
Why is my oven crackling and sparking at the on/off switch and will it start a fire in my wall? [more inside]
posted by fruitopia
on May 4, 2013 -
So instead of providing an answer, please help me by showing me how you got your result.
I have a 12v device that consumes 1W in idle mode, and 5W in active mode. How many "amp hours" am I looking at over a 24 hour period (always on). I am looking specifically for amp hours... I don't understand the relation between amps and amp hours yet.
posted by squirbel
on Apr 23, 2013 -
My dryer died last night. I'm not sure if it is the outlet or the dryer. I do have a digital multimeter and want to test the outlet. I'm not sure how to do this without killing myself. [more inside]
posted by johnpowell
on Apr 5, 2013 -
We woke up this extremely cold morning (9F/-13C) and various electric things in our condo seem to be flaky, like there's not enough power. I also noticed that the thermostat for our heat pump says "Auxiliary Heat On", which I haven't seen before. Has anyone seen something like this before? Since it's all electric, it seems like it might be related. [more inside]
posted by smackfu
on Jan 23, 2013 -
Nearly 12 years ago I underwent cranioplasty, which involved dissimilar metals being added to the inside of my skull. Could it be possible that I'm generating a low voltage current? This would explain roughly 90% of the unexplained symptoms I've noticed since that time. This seems like a case of electrochemical capacitance to me. I understand that YANMD; in fact, it may even be the case that YARNAD. That's just fine, I don't really want anyone's 'medical' advice. What I need is some advice on what questions to ask and which specialists I 'should' actually be seeing to properly diagnose and resolve these issues. [more inside]
posted by schade
on Jan 15, 2013 -
I know this question is a little bit arbitrary, but any response will be helpful.
I live in a 2 family spilt house/condo. I noticed that my electrical box is powering the OTHER unit's gas boiler. I assume that the electrical just feeds the thermostat and maybe triggering the pilot to boil the water?? (My knowledge here is limited.)
Without knowing too much about their heating use, I am trying to determine the urgency of getting an electrician to switch it from my electricity to the other unit's electrical box.
posted by lccslug
on Jan 13, 2013 -
We've been in our new house about 3 months, and our power bills feel
a lot higher than they should be, based on our perceived usage. Looking for ways to track down errant usage. [more inside]
posted by hanov3r
on Jan 10, 2013 -
I get painful static shocks to my hands where they touch the cart as I'm pushing it around at Costco. As far as I can tell this happens while wearing various kinds of shoes, although I haven't experimented rigorously. Help me devise a method to prevent this that I can realistically implement during impromptu trips to the store. [more inside]
posted by fingersandtoes
on Dec 19, 2012 -
I need to find about 10 transformers/converters from 240 @ 50hz to 120V @ 60Hz capable of about at least 1000W @ 120V. [more inside]
posted by digividal
on Dec 11, 2012 -
Why is my business partner always on the receiving end of painful (but hilarious) static shocks in our office, yet I seem to be unaffected? [more inside]
posted by Detuned Radio
on Dec 4, 2012 -
Explain to me the technology of charging devices. Is it mainly about voltage? About current? How close to the "required" values must you be? [more inside]
posted by Obscure Reference
on Nov 16, 2012 -
My computer cycles off without warning, and it's on a battery pack/surge protector UPS. What gives? [more inside]
posted by Chris4d
on Nov 14, 2012 -
Electrical Filter: Help me figure out how an electrical circuit seemingly got rewired overnight. [more inside]
posted by dortmunder
on Nov 11, 2012 -
How do I keep my iguana alive during an electric blackout? All of her lighting and heating elements demand electricity. I don't have a generator or the funds to purchase one. I'm most concerned about her getting too cold. Under 80*F for extended periods is the danger zone.
posted by pupus
on Oct 27, 2012 -