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xkcd bot@lemmy.worldB to xkcd@lemmy.worldEnglish · 6 days ago

xkcd #3211: Amperage

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xkcd #3211: Amperage

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xkcd bot@lemmy.worldB to xkcd@lemmy.worldEnglish · 6 days ago
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xkcd #3211: Amperage

Title text:

Oh, and do you have any tips on how to vacuum up copper that’s melted into your carpet?

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3211/

explainxkcd for #3211

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  • WanderingThoughts@europe.pub
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    6 days ago

    “Who did the electrical work in this house?”

    “That would be my nephew Thomas, he’s very handy.”

    “When Thomas’s house burned down?”

    “Oh about two years ago, how did you know.”

  • nialv7@lemmy.world
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    6 days ago

    did xkcd just watch the new styropyro video

    • turboSnail@piefed.europe.pub
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      6 days ago

      Apparently you saw that 400 battery video too.

      • Flames5123@sh.itjust.works
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        6 days ago

        I haven’t had TWO HOURS to dedicate to it just yet.

        • turboSnail@piefed.europe.pub
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          5 days ago

          I just put that on in the background while I was cooking, cleaning etc. I actually watched the first 30 minutes like a normal video. During the rest, I was actively looking only about 10% of the time.

          • Flames5123@sh.itjust.works
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            4 days ago

            I usually watch these type of videos while WFH but I haven’t been able to these last few weeks.

            • turboSnail@piefed.europe.pub
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              3 days ago

              Imagine having those explosions in the background during a meeting 😄

      • Thteven@lemmy.world
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        6 days ago

        The slow motion video of the metal turning to vapor was mesmerizing.

        • turboSnail@piefed.europe.pub
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          5 days ago

          A still from that video really looks like something from a space telescope. Small glowing dots and a gas cloud in the background.

  • palordrolap@fedia.io
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    6 days ago

    Alt-text should be “Resistance is futile”.

    • BobWehadababyitsaboy@lemmy.zip
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      5 days ago

      or “fusile”

  • agentTeiko@piefed.social
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    6 days ago

    You break ohms law. Its the death penalty for you.

    • AreaKode@riskeratspizza.com
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      6 days ago

      I don’t know… What if he’s rich and banged some kids? Just boys being boys… /s

  • Parafaragaramus@infosec.pub
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    6 days ago

    Good old incandescent extension cords

    • frank@sopuli.xyz
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      6 days ago

      They’re all incandescent if you’re not a quitter.

      Also everything is a fuse

      • zurohki@aussie.zone
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        • marcos@lemmy.world
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          Wait, I never noticed!

          I can use a fuse with a safe value and still get tasty molten cheese every time I need to replace it?

          • Zink@programming.dev
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            6 days ago

            mechanic: So, does it make any noises or can you smell anything burning?

            customer: I can’t really hear anything, maybe a little hiss or sizzle once in a while. And nothing burning that I can smell. It actually smells really good and I’m getting hungry!

            mechanic: aha! I got u fam.

        • Mcdolan@lemmy.world
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          6 days ago

          From what I recall 22 rim fire shells are a perfect fit for old car glass fuses.

  • Agent641@lemmy.world
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    6 days ago

    Every circuit has a circuit breaker, it’s just that sometimes the circuit breaker is the power cord or the product itself

    • JackFrostNCola@aussie.zone
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      5 days ago

      ‘Fuse’ would be more accurate.

      • billwashere@lemmy.world
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        5 days ago

        18awg at 100A could be considered a fuse. Or a heating element. One of the two.

        • rumba@lemmy.zip
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          5 days ago

          First one, then the other.

  • Bustedknuckles@lemmy.world
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    Eh, ~zero impedance house circuits won’t do anything bad to normal electronics - it’ll just make sure no fires happen in your walls. I do almost all home wiring in 12 gauge and larger for this reason

    Actually, the comic only has 500A breakers and don’t say anything about wires. Recipe for fire!

    • hope@lemmy.world
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      6 days ago

      I think that’s the joke, especially since the alt text asks about getting melted copper off the carpet.

      • BillyClark@piefed.social
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        The comic is talking about the cords that come out of the outlet into the room melting and starting fires. The guy you responded to is talking about wires in the walls starting fires.

      • Tja@programming.dev
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        6 days ago

        Ah, the good old asbestos carpets. Cozy!

    • Cort@lemmy.world
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      6 days ago

      Yeah, I’m just imagining someone running multiple 0000 gauge (4 ought) cables in parallel to each outlet and switch, and then all back to the breaker box.

    • WanderingThoughts@europe.pub
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      500 amps? That’s no wiring, that’s cabling.

    • marcos@lemmy.world
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      6 days ago

      Dude, the entire comic is about wires.

  • zephiriz@lemmy.ml
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    6 days ago

    Sounds like something Styropyro would do.

    https://youtu.be/OC7sNfNuTNU

    • craftrabbit@lemmy.zip
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      5 days ago

      Just another order of magnitude worse.

      Somehow.

  • altphoto@lemmy.today
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    6 days ago

    Check the resistance. 1,000,000,000.00 Ohms is something to pay attention to.

  • electric_nan@lemmy.ml
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    5 days ago

    Electricity is one of those subjects that will forever remain a mystery to me.

  • Bazell@lemmy.zip
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    6 days ago

    500 amps? Does she have a residential house or a small factory?

    • marcos@lemmy.world
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      6 days ago

      My main question is where can I hire a 10000 amps connection?

      • Bazell@lemmy.zip
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        6 days ago

        At your local nuclear power plant.

  • Sam_Bass@lemmy.world
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    5 days ago

    deleted by creator

  • fruitycoder@sh.itjust.works
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    5 days ago

    Reminder the size of breaker in the US electric code is to protect the wire and receptcle. After that you’re in someone elses hands.

  • varjen@lemmy.world
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    deleted by creator

  • Greg@discuss.tchncs.de
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    6 days ago

    Is it a joke about EV charging in Europe? Like there are super duper chargers for super advanced car batteries and rather good coal and nuclear plants but no good network between them?

    • ℍ𝕂-𝟞𝟝@sopuli.xyz
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      6 days ago

      I don’t think so, also electric chargers of varying quality are super ubiquitous in Europe.

      My little Eastern European hometown of 20k people has two stations of 8 plugs each.

      • Greg@discuss.tchncs.de
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        6 days ago

        I agree with your point, but I also assume it’s a not a supercharger-grade? Like in China they have quite often supercharger-grade in cities practically everywhere and prices per kilowatt are no different from slow-charging (like 22kW). While in Europe I noticed that price for kWh is different based on charger’s capacity.

        • cynar@lemmy.world
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          6 days ago

          It’s less based on the capacity, and more on how much time is likely a premium.

          E.g. motorway services are more expensive, since people need the power and want to get back on the road. It’s exactly the same logic as the price of petrol there.

          • Greg@discuss.tchncs.de
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            6 days ago

            Makes sense! Thank you!

        • ℍ𝕂-𝟞𝟝@sopuli.xyz
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          6 days ago

          One of the two is actually a Tesla supercharger

          • Greg@discuss.tchncs.de
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            6 days ago

            Awesome! Thanks!

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