Timeline for How to cut off and insulate live 3-phase power?
Current License: CC BY-SA 4.0
37 events
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| Feb 11, 2022 at 13:30 | comment | added | manassehkatz-Moving 2 Codidact | @FreeMan The big difference is that in almost all cases, planned work on 120V or 240V circuits within a home (or even outside, but after the main panel) can be done 100% safely by anyone, simply by turning off the breaker first. Which in fact is why almost nobody (hopefully!) replaces a receptacle, switch, etc. with the wires hot - just no reason to do so. But that's not an option for this situation. | |
| Feb 11, 2022 at 12:49 | answer | added | FreeMan | timeline score: 3 | |
| Feb 10, 2022 at 16:30 | comment | added | FreeMan | That they do (IMHO), @nobody, however removing them without making an answer out of it (something the OP or a mod can do), leaves a lot of confusion about the most recent set of comments. Please roll back your edits until the change is made, or follow TylerH's suggestion in his answer to the meta post. | |
| Feb 9, 2022 at 23:10 | history | edited | nobody |
edited tags
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| Feb 9, 2022 at 23:09 | comment | added | nobody | Answers/resolutions go in the answer box. | |
| Feb 9, 2022 at 23:06 | history | rollback | nobody |
Rollback to Revision 6
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| Feb 9, 2022 at 13:29 | comment | added | FreeMan | Of course, you can die of electrocution from a 15A/120V circuit and dying by electrocution from a 240V (or whatever) 200A circuit won't make you any more dead... | |
| Feb 9, 2022 at 13:28 | comment | added | FreeMan | Happy to hear you survived and more so that you called the power company to do it properly. Just because the guy said "that's how we always do it" doesn't mean that he wasn't trained to do it that way and knows how to do it properly and safely. Despite the fact that he borrowed your "aluminum" ladder (do the quotes mean that it's not really AL, or that you're trying to emphasize that it is?) doesn't mean that all the rest of his equipment wasn't specifically designed to keep him safe while doing this job. | |
| Feb 9, 2022 at 8:28 | comment | added | dirkpiet | @criggie Thanks for your concern I updated the post, kind regards Dirk | |
| Feb 9, 2022 at 8:24 | history | edited | dirkpiet | CC BY-SA 4.0 |
added 918 characters in body
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| Feb 8, 2022 at 6:01 | comment | added | Criggie | @dirkpiet "Last seen more than 4 years ago" I'm concerned. Did you attempt to follow your initial plan ? | |
| Feb 4, 2021 at 2:57 | comment | added | Criggie | @dirkpiet its now over three years later. What happened? | |
| May 8, 2017 at 0:30 | history | edited | Niall C.♦ | CC BY-SA 3.0 |
Remove irrelevant tags
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| Apr 13, 2017 at 12:22 | history | edited | CommunityBot |
replaced http://diy.stackexchange.com/ with https://diy.stackexchange.com/
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| Mar 15, 2017 at 3:47 | comment | added | Criggie | Please keep us updated with what you do and how it goes - this is fascinating. | |
| S Mar 14, 2017 at 22:37 | history | suggested | Mark Henderson | CC BY-SA 3.0 |
Added info that the user left in a comment, as people seem to be very interested in the location of the question asker.
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| Mar 14, 2017 at 19:08 | review | Suggested edits | |||
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| Mar 14, 2017 at 19:07 | comment | added | Mark Henderson | @ThreePhaseEel OP says in a comment elsewhere that they are located in South Africa. I would absolutely believe the story about power company taking 6 months in ZA. I've also seen them do some of the things that would get a workplace shut down in some countries as just a matter of course. | |
| Mar 14, 2017 at 17:26 | comment | added | Steve Jessop | @CortAmmon: could perhaps even make a case that a question like this is too open-ended with too broad a scope for the site. The full details of things that can go fatally wrong, and the list of alternatives to slicing a live supply and how to choose between them, is too long to fit in a reasonable answer. Hence, as you say, even if you completely trust the person giving the answer, an answer on this site can't train you to work up a power pole. Likewise, don't ask on medicine how to set a broken bone: even with an accurate answer you'll mess it up, which is why nurses train for that stuff... | |
| Mar 14, 2017 at 15:20 | comment | added | Softec | Also remember to earth non live part of cut cable to discharge any static charge for safety reasons. | |
| S Mar 14, 2017 at 13:18 | history | suggested | SDsolar |
Added two tags
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| Mar 14, 2017 at 9:14 | comment | added | Martin | Please do an google image search on the term "electrical injuries". Maintenance on non-secured lines is something even full fledged electricians have the utmost respect. And no, if you do not know how to handle this then even some fancy protection systems like insulated shears, rubber gloves/foil etc. won't protect you | |
| Mar 14, 2017 at 4:00 | review | Suggested edits | |||
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| Mar 13, 2017 at 20:44 | comment | added | J... | So... how, exactly do you plan to reconnect these cables? Shearing live cable is insanity - that's just not the right way to do it. You go back to the disconnect and switch the power off. If you need the cables changed, you remove them at the disconnected lugs once the power is off. | |
| Mar 13, 2017 at 19:19 | comment | added | Bohemian | @insta where I come from, 3-phase is 440V. I assumed this with my comment, in which case "plasma" is an over statement. | |
| Mar 13, 2017 at 19:15 | comment | added | Bryan B | @Bohemian: "may cause heat damage to the insulation" is a bit of an understatement with mostly unlimited 20kA going through the plasma of what's left of the bolt cutters. | |
| Mar 13, 2017 at 17:23 | comment | added | Cort Ammon | So I've had a bit of amusement answering questions like these, but it looks like the answers have it covered. The one addendum I would give is my standard disclaimer for high voltage power: If you have to ask StackExchange for advice regarding high voltage power, you shouldn't be messing with it. Electricity is one of those things where you either already know the answer, or ask someone you trust. You only get one heart, and it's silly to entrust it to random people on the internet, no matter how much good advice StackExchange may provide on average! | |
| Mar 13, 2017 at 15:21 | comment | added | Bohemian | I've cut my own cables before, and lived (obviously) - you'll be fine. But I'm not going to post this as an answer because I don't want the downvotes from all the naysayers and overly-cautious. When you cut it, cut 1 copper wire at a time. Otherwise, your cutting tool will touch multiple copper wires at once and current will flow through your cutting tool. This won't electrically affect you, but may blow fuses somewhere and cause heat damage to the insulation. Also, wrap the handles of your cutting tool in some cloth to put space (air is an excellent insulator) between you and voltage. | |
| Mar 13, 2017 at 14:00 | history | tweeted | twitter.com/StackDIY/status/841287887387783168 | ||
| Mar 13, 2017 at 6:22 | answer | added | Imaginary | timeline score: 4 | |
| Mar 13, 2017 at 3:40 | comment | added | SDsolar | Since you have cable degradation I think the power company would react nearly instantly to a report about it. | |
| Mar 13, 2017 at 3:39 | answer | added | SDsolar | timeline score: 29 | |
| Mar 12, 2017 at 23:58 | history | edited | wallyk | CC BY-SA 3.0 |
format and spelling
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| Mar 12, 2017 at 23:00 | answer | added | Harper - Reinstate Monica | timeline score: 13 | |
| Mar 12, 2017 at 20:07 | answer | added | Ecnerwal | timeline score: 64 | |
| Mar 12, 2017 at 19:42 | review | First posts | |||
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| Mar 12, 2017 at 19:34 | history | asked | dirkpiet | CC BY-SA 3.0 |