• Treczoks@lemmy.world
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    6 days ago

    A former coworker was abroad most of the time. Still, his power meter showed lots of usage during his absence. A tenant in the same house had used such a cord to leech power across the common laundry room.

    Now that coworker knew his way about electricity. So instead of the 220V between common and a phase, he rewired his washing machine socket to two different phases, aka 380V, and left for a week.

    When he came back, he saw a number of kitchen- and other appliances waiting for trash collection.

      • Treczoks@lemmy.world
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        6 days ago

        Absolutely normal here. Three phases, now 400 instead of 380V back then, 64A. Standard house connection.

        • FourWaveforms@lemm.ee
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          6 days ago

          In the States the new standard is 240V @ 200 amps, split phase. Most circuits are half of a phase (120V) but there are 240V circuits for load-heavy appliances like stoves and air conditioning. I’ve heard some people have an extra 240V socket in their kitchens just for tea kettles.

          • Treczoks@lemmy.world
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            5 days ago

            These-phase 400V is the standard house connection here in Europe. Wall sockets are 240V/16A (any phase to neutral), but we also have devices running on three phases, like the oven or the geyser in the kitchen.

              • Treczoks@lemmy.world
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                4 days ago

                Short answer: Yes.

                There are actually so-called “three phase combs” for the fuse panels: Sample Image. You put your fuses on a hat rail (in this case eight fuses, but those combs are available in different sizes), you stick that comb in from below and tighten up the screws. Then you connect the three phases to the connections on the left, or, in some fuse boxes, screw them right onto the bus bars.

  • A_Random_Idiot@lemmy.world
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    7 days ago

    “this time of year” is 100% christmas.

    from people putting up lights, probably trying to run remote power to a box with an extension cord, or because they installed half their lights backward and need this to bridge between the two sets because they rather embrace the danger than redo all the work.

    • Sir_Simon_Spamalot@lemmy.world
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      7 days ago

      Except that sometimes, those idiots could take people down with them. That electrical fire might spread to another house, and the person getting electrocuted might not be the idiot.

      • dickalan@lemmy.world
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        7 days ago

        So you’re telling me it could take out their whole family line and any idiots that choose to engage with this idiot, this all sounds an absolute win

  • Steal Wool@lemm.ee
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    7 days ago

    I sell so many of these around Xmas time, I just make them myself with scissors and electric tape.

  • rumba@lemmy.zip
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    7 days ago

    Why not have the meters detect and control a disconnect. with all the solar generation around, someone’s gotta have a bad transfer switch somewhere.

    • MajorasMaskForever@lemmy.world
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      7 days ago

      Reaction time

      In the US, using a cord like this will either be harmless or create effectively a dead short. Typical breakers will catch the latter but it will take tenths of a second for a breaker to react in which time the electricity could kill someone.

      Depending on circuit conditions a GFCI might intervene as well, they’re typically faster at reacting (needing a few milliseconds) but for a cable designed to handle full residential power, it’s still enough to kill a person in that small window of time

  • zymagoras777@lemm.ee
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    7 days ago

    Most of eastern Europe do this and somehow linesmen don’t get killed. I’m not saying it’s the right thing to do but come on, guys, you have to adapt. If your government is shit.

  • N3Cr0@lemmy.world
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    7 days ago

    My granpa once assigned a master electrician to make an extension cord after he accidently cut the cable of his hedge trimmer. The electrician built him a male2male cord with the female part on the machine. My granpa almost got electrocuted. 🤦‍♂️

  • Freshparsnip@lemm.ee
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    8 days ago

    It is written in the book of Leviticus: “It shall be unclean for one end of an electric cord to match the other”

    • Canonical_Warlock@lemmy.dbzer0.com
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      8 days ago

      Holy shit, this is what that part in the bible is actually about. People back then just didn’t know about electricity so they thought it was about gay people.

      • uuldika@lemmy.ml
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        8 days ago

        honestly tho. if the Torah is legit its advice should apply to the future too. haShem wouldn’t just have been writing to Moishe’s time.

  • OhStopYellingAtMe@lemmy.world
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    8 days ago

    I have a 50’ (15.25 m) extension electrical cord on a wind-up reel. It has a separate 10’ (3m) cord from the reel hub, to plug into the wall outlet.

    All I want is a way to plug it into the wall and be able to unreel it as I work, without that 10’ section getting all twisted. Kind of like a phone cord detangler (pic below), or the brake cable detangler/gyro on BMX stunt bikes.

    I was trying to think of a way to make one but apparently it’s a “dangerous fire hazard” or whatever.

    • Longpork3@lemmy.nz
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      7 days ago

      Get a regular extension cord, find the mid-point, and feed it through the rollerdrum or duct-tape it on. Roll the cord onto the drum such that both ends are being rolled in the same direction. When finished, you will have a male and female connector readily available from the end of the drum, and uncoiling it will give you an equal length of both sides.

    • DerisionConsulting@lemmy.ca
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      8 days ago

      People use them to make their generators power their homes, by adding power into an outlet.

      So, whatever time of year power outages are likely to happen in this area.

      • hansolo@lemm.ee
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        8 days ago

        Holy shit, does that work?

        I’m only familiar with having a generator properly wired into the house system at the panel, not some electrical Uno Reverse.

        • yes, it would (possibly) work, but you’re likely to run into quite a few safety-related issues outside of using the suicide cord. the fact that you’re probably injecting power downstream from any RCD units or even any basic current breakers, leaving you open to electrocution, or worst case, fire. the other issue is if you dont isolate your home from the grid before doing thus, then when the grid comes back (and your generator is still… generating) there’s likly to be a loud bang and a dead generator, let alone the risks you put on any workmen who are working on the lines they are expecting to not be carrying current.

          TLDR; unless your hourse is specifically wired for this, and you have the necessary protections in place, just use an extension cord and plug your fridge directly into the generator. 🤷

        • JakenVeina@lemm.ee
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          7 days ago

          I did it last week. We were out of power for about 30 hours. But I actually have a degree in Computer Engineering, and I did it with a friend who is a professional Electrician.

          It is indeed EXTREMELY dangerous. If you don’t know what you’re doing, or make a mistake, best case scenario, you fry your generator. Worst case, you electrocute a lineman from the power company, who isn’t expecting lines to be live when there’s an outage, because yes, if you feed power into your house, that will flow OUT of your house onto the main lines (to some extent), if you let it. You could end up trying to power your whole block on your little gas generator.

          We made sure both the indoor and outdoor main power shutoffs for the house were turned off, as well as all breakers. Then we unplugged the oven, and used that for the feed from the generator. Then we gradually re-activated breakers so as not to add too much load to the generator at once. Ultimately, we were able to run the whole house, except for the AC compressor, which the generator actually would have had enough power to run, but not to kick-start.

          The proper way to hook up a generator to feed your house is to install an “inlet” which is both nominatively and physically the opposite of an outlet: instead of holes going into a box, you have prongs sticking out of a box. Generally, it’ll be one of the big fat 4-pronged round cables, like what your oven might use. That’ll feed down to a large double-breaker, in the top-right slot of your breaker panel. That breaker stays off until you want to run a generator, and, to meet code, you have to also install a special bracket that prevents you from turning this breaker off without turning off the primary feed for the whole house. Still kinda dangerous, but they make those brackets surprisingly foolproof.

          • MelodiousFunk@slrpnk.net
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            7 days ago

            except for the AC compressor, which the generator actually would have had enough power to run, but not to kick-start.

            This sentence triggered my PTSD. Imagine, if you will, a world where executives insist that datacenter AC be put on UPS battery. A world where those same executives declare that a different datacenter is just fine running at 95% power capacity because “it’s not 100%.” A world where inrush current does not exist. Except it does exist, but all professional advice is ignored until there are consequences. And even after such consequences are realized, one of those same executives still tries to run his home sump pump off of a desktop UPS during a power outage, pops it immediately, then goes and gets another from the office, which also pops immediately.

            The sign in OP’s post will always be relevant somewhere.

        • RegalPotoo@lemmy.world
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          7 days ago

          It does, but it’s super dangerous to do unless you have it wired up properly. Proper installations will use a special connector so you can’t plug anything else into that receptical, and will have it interlocked against the main breaker - you can’t plug anything in without disconnecting from the grid. The dangers of doing it amateur-hour are:

          • You now have a cable that you can unplug and have live ends exposed - which if you don’t realize is connected to an active generator is super dangerous, and even if you do one slip and you are now the ground conductor
          • If you connect the generator while still connected to the grid, your generator is almost certainly going to be out of phase. This will probably cause damage to your generator and anything else plugged in at the time
          • If you don’t have an interlock and run the generator while connected to the grid (say during a power outage) you will be back-feeding power into the grid. This is super dangerous for anyone coming to fix the outage, as things that they’ve isolated to fix can still end up being live

          Note that this interlock is also required if you have solar - although it’s usually in the form of an automatic breaker that will disconnect and put the circuit into “island mode” if it detects a loss of grid supply

        • Rivalarrival@lemmy.today
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          7 days ago

          If you have to ask, don’t do it.

          The proper way to connect a generator is with a breaker panel interlock. This gives you a circuit breaker for the main, grid power; a second breaker for the generator; and an interlock device that only allows one of those two breakers to be active at any given time.

          Trying to use a suicide cable can get power into the house; disconnecting the main breaker would prevent the generator from back feeding the grid. However, the circuit you are plugging the breaker into is only rated to 15 or 20 amps, and you’re backfeeding it with a lot more. You can easily overload this circuit without actually blowing a breaker.

          There’s other problems as well: your house wiring is designed for two opposing hot, 110v phases. These are combined to provide 220v power to major appliances. Improperly backfeeding your wiring can potentially damage those major appliances.

          You are better off with a nice, heavy-duty extension cord than a half-assed suicide cable.

          • hansolo@lemm.ee
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            7 days ago

            Lol, not going to do it. Been mildly electrocuted too many times to mess around with something like this.

            More so curious about the physics here, but I see it’s basically a roll of the dice that it does work and doesnt just fry everything.

    • doctordevice@lemmy.ca
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      8 days ago

      I’m gonna guess winter, hanging Christmas lights. People string up their lights and then realize far too late that they put two strands with female ends facing each other and instead of restringing they look for a male-to-male cord to bridge the gap.

      A little live wire shouldn’t stand in the way of holiday cheer, after all.

      • kassiopaea@lemmy.blahaj.zone
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        7 days ago

        That would immediately blow the fuse in the lights and/or start a fire if the two strands were on different circuits that happened to be on different electrical phases.

        While I wouldn’t doubt that some people are stupid enough to do that, it’s actually summer that it’s done the most for because of storms and power outages, and people learn that backfeeding is a thing (that you shouldn’t do unless you absolutely know what you’re doing).

        • doctordevice@lemmy.ca
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          7 days ago

          I appreciate a good “um actually” but this really is about Christmas lights. People really are stupid enough for this to be something posted specifically around December.

          As far as I can tell from a reverse image search this is the original. (Not linking to the other place, DM me if you want the link for some reason).