Ask Lemmy
A Fediverse community for open-ended, thought provoking questions
Rules: (interactive)
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
6) No US Politics.
Please don't post about current US Politics. If you need to do this, try !politicaldiscussion@lemmy.world or !askusa@discuss.online
Reminder: The terms of service apply here too.
Partnered Communities:
Logo design credit goes to: tubbadu
view the rest of the comments
we hijacked a conference room on a shared floor for a week and built a three-phase high-voltage line in there by hunting around the building for which sockets were on which phase, then plugging them into industrial transformers.
Okay -
we were recording the magnetic fields generated by a high-energy short circuit. we hung a mouse trap from one of the lines, with a lead going to one of the others, so that they fused together when it sprung.
it is normal here, yes. larger appliances get three phases, and single-phase outlets are split between them as evenly as possible.
First off, instead of using bullets and then manually enumerating then, try putting "1. " at the the start of every item in the list. Don't increment the "1".
Around me the only homes without 3phases are older small apartments. Most houses have a 35A 3phase supply, although 63A may become the norm on account of EVs. It's quite normal to have a 3 phased fuse where each phase is used for something different. Say a fuse box is used for lighting and outlets, but L1 is ground floor, L2 is upstairs and L3 is outdoors.
BTW if you ever move into a house where someone has put outdoors on the same rcd as the rest of the house, then do yourself a favor and get a separate combo rcd/fuse for outdoors. When the rcd trips, it's always the outdoor usage, and it sucks when all the lights go out, because a gasket died in an outdoor lamp.
From your comments it sounds like this is Europe? In the US, 3-phase residential is rare - usually limited to large apartment buildings.
Usually what we have is a "split phase" system, where it comes in at 240v and a local ground is used to divide it into two 120v legs.
It varies by state, but some states have requiring outdoor outlets to be on a separate breaker or GFCI (RCD) outlet already, for just this reason.
Sounds like an industrial setting, they typically get three phases. Probably also explains the desire.
Did you build Tesla coils or something? Were there intentional sparks involved?
no, and yes. i'm not going into more detail for fear of doxxing myself but basically we wanted the waveforms generated by a high-voltage short circuit.
later tests involved help from a power company and actual high-voltage lines.
Sounds like a very cool job
Those sparks must be epic, should give you the feeling of being a Nordic god or something
The smoke from failed tests must be epic too
it was, i miss it. surprisingly little smoke, but we did get some good arcs going.