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Elviscat posted:Is that single phase and a neutral, or three-phase? Three phase.
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Aug 22, 2020 04:19
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With enough current it is single phase.
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Aug 22, 2020 04:22
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sharkytm posted:Three phase. Still good then, if the motor overloads, it has to do it phase-phase, so no need for a third fuse! 
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Aug 22, 2020 05:31
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Elviscat posted:Still good then, if the motor overloads, it has to do it phase-phase, so no need for a third fuse! Yea, what's a ground fault 
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Aug 22, 2020 14:37
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Ground fault should be handled by the upstream circuit protection, the disconnect before the contactor should have fuses that are down sized for motor protection, not circuit protection. I am 100% sure that the chucklefuck that used a length of pipe as a fuse, and failed to identify any sort of phasing did everything else 100% correctly.
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Aug 22, 2020 18:18
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Blacknose posted:This is why half the electrical goods just got replaced in my house. Substation faults are quite a thing. Oof. How many houses got involved in THAT party?
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Aug 22, 2020 19:51
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Those crimps aren't crimped.
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Aug 22, 2020 22:49
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STR posted:Oof. How many houses got involved in THAT party? A few hundred. Some had only minor damage while others, like ours, lost nearly everything that was plugged in plus damage to wiring. I chatted with the guys fixing the substation (it's right behind my row of houses) and a neutral fault took out the transformer. The fuses and failsafes in the substation all failed to catch it before it ran away and hit the whole area with something approaching distribution current. Things started going pop in our house so I went to kill the breakers and the RCD exploded in my face, which was pretty spicy. 
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Aug 22, 2020 23:38
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Blacknose posted:a neutral fault took out the transformer. The fuses and failsafes in the substation all failed to catch it before it ran away and hit the whole area with something approaching distribution current. I have personally seen relays and reclosers with default protection settings in the field. A neutral fault isn't typically included in those defaults. You'd think an owner/operator would do a better job protecting assets like a transformer, but no. At least it wasn't a transmission transformer.
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Aug 23, 2020 01:41
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Yeah I'm just going on what I could get out of the techs working on it. They weren't super talkative and were trying to give me a mega dumbed down version.
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Aug 23, 2020 09:05
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They were told to keep it simple if asked so no one would know it was caused by wind turbines  Said someone I expect
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Aug 23, 2020 12:17
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The second you said half the stuff in your house I was like "this is going to be a bad neutral somewhere isn't it"
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Aug 23, 2020 14:10
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 Apparently a brake got stuck on, exploded, and ignited the magnesium wheel.
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Aug 23, 2020 19:43
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If that were a magnesium fire it would still be burning.
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Aug 23, 2020 19:46
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um excuse me posted:If that were a magnesium fire it would still be burning. i would think the fire crews would have class D extinguishers for this very scenario. e: video of the incident. https://twitter.com/IndyCaronNBC/status/1297604321811607553
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Aug 23, 2020 19:49
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A mag fire is visually very different. https://www.youtube.com/watch?v=BcvH0wDMXWg
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Aug 23, 2020 19:51
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Yeah, if it were an actual magnesium fire it would be blinding white, not orange. That looks like the wheel just got so hot that it failed and blew apart under rotational stresses. Incidentally, the whole meme about magnesium wheels/engines/castings bursting into a white-hot inferno if the car catches fire is not really true. Back in like WW2 when magnesium parts were new, maybe, but modern magnesium casting alloys are designed not to sustain a fire and will just melt like aluminum.
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Aug 23, 2020 20:01
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Interesting. Takes a few seconds to realize a driver is on fire with methanol. edit: Should add, not related to rims but Indy in general in the past before they switched. Colostomy Bag fucked around with this message at 20:07 on Aug 23, 2020 |
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Aug 23, 2020 20:03
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C-Bangin' it 
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The best story about the flammability of modern-ish magnesium I know of is probably the guy who wanted to burn a NeXT Cube and eventually managed to do it for a magazine photo, back in the mid 90s: https://simson.net/ref/1993/cubefire.html Surprisingly, it has been updated with a link to an album with all the pictures of the burn.
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Aug 23, 2020 21:10
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So, Hondas are faster than Chevrolets.
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Aug 23, 2020 22:08
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Powershift posted:
There's a song for that: Bob Dylan posted:Wheel's on fire
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Aug 23, 2020 23:45
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Aug 24, 2020 01:53
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um excuse me posted:A mag fire is visually very different. 1:19 - why you don't use water on a magnesium fire.
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Aug 24, 2020 10:01
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Itzena posted:1:19 - why you don't use water on a magnesium fire.
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Aug 24, 2020 12:46
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crossposting https://i.imgur.com/bKWM9kA.mp4
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Aug 27, 2020 16:29
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Well at least now they have problems to worry about beyond just replacing the rear passenger-side tire.
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Aug 27, 2020 16:34
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I love going to a parking lot and laying down some 1s
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Aug 27, 2020 17:35
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My main reaction is surprise in learning that Challengers have open diffs.
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Aug 27, 2020 19:21
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LifeSunDeath posted:crossposting Reminds me of this old classic. https://www.youtube.com/watch?v=9nI9Ys6q_mw
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Aug 27, 2020 22:17
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LifeSunDeath posted:crossposting What are the odds that it was a rental?
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Aug 28, 2020 01:33
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Powershift posted:
count me impressed as gently caress that the tire outlived the wheel in an "Every point of contact to the tire is glowing yellow" scenario
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Aug 28, 2020 01:48
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Boaz MacPhereson posted:My main reaction is surprise in learning that Challengers have open diffs. The cheap(er) ones do.
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Aug 28, 2020 02:15
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Darchangel posted:What are the odds that it was a rental? I dunno, it’s totally missing the guy hanging out the window yelling “FOR $19.95 YOU CAN RENT THIS MOTHERFUCKER” e: in case you’ve never seen this classic tale https://youtu.be/dLpuq0jyiCE
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Aug 28, 2020 18:30
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snugglz posted:I dunno, it’s totally missing the guy hanging out the window yelling “FOR $19.95 YOU CAN RENT THIS MOTHERFUCKER” When you get back to the store to return the truck 5 minutes before closing and they slam the rental desk door in your face and charge you an extra day the next morning this is the only answer
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Aug 29, 2020 01:36
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snugglz posted:I dunno, it’s totally missing the guy hanging out the window yelling “FOR $19.95 YOU CAN RENT THIS MOTHERFUCKER” I don't give a drat about UHaul - they make enough money, but I've always felt a pang of sadness for that truck. Poor truck just wants to be useful and do a good job  they're hurting it
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Aug 29, 2020 01:51
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NoWake posted:I don't give a drat about UHaul - they make enough money, but I've always felt a pang of sadness for that truck. Poor truck just wants to be useful and do a good job This is a common misconception. Late-model LQ-based Silverados are actually sexually aroused by savage parking lot beatings.
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Aug 29, 2020 02:28
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Seat Safety Switch posted:This is a common misconception. Late-model LQ-based Silverados are actually sexually aroused by savage parking lot beatings. this is all ls related vehicle.
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Aug 29, 2020 03:49
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NoWake posted:I don't give a drat about UHaul - they make enough money, but I've always felt a pang of sadness for that truck. Poor truck just wants to be useful and do a good job That truck is a movie star and has brought more value to this world than any of its brethren.
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Aug 29, 2020 04:33
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That truck is basically the dog from Call of the Wild, a big ol' wolf, out there being free, while its brethren are stuck in lives of drudgery hauling poo poo around and not being maintained.
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Aug 29, 2020 04:42
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Seat Safety Switch posted:This is a common misconception. Late-model LQ-based Silverados are actually sexually aroused by savage parking lot beatings.
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Aug 29, 2020 05:45
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