Are extension cords dangerous for Computers?

[@samueljordan5601]

To late Jay, I already use a 300ft extension cord connected to my neighbor's house to save on electricity, I guess this explains why their house almost caught on fire

[@samueljordan5601]

@@aaronlarue7987 ya I changed it lol

[@WilliamHollinger2019]

Whoo thank god that there hohse didn't or else you pay there medical car bill.

[@winslowwidd79]

Aww (*nods) they were watching this video while using their oven.

[@WilliamHollinger2019]

@@winslowwidd79 well i am currently rasing off from laptops and gaming box cough xbox one x

[@MEATLOAFr]

Better theirs than yours

[@somnorila9913]

This seems like a job for ElectroBOOM, you missed a great opportunity to to make a cool collaboration video.

[@CaptEmo-lb5ix]

Oh yes plz see this jay

[@botagasss]

Thought the same. We need ElectroBOOM on the matter!

[@mf1ve]

Count me in for Electroboom content.

[@MrHrannsi]

Oh yess!!!

[@chasetryon3870]

That just means a follow up video!

[@pablofreitasmachado8076]

As a brazilian..... can confirm. Also the transformer on the end of my street caught fire today. So ye.... count on luck here.

[@gugubope21]

I feel you

[@YuriZimushy]

Boa sorte aí kkkkk ;-;

[@bookworm8415]

So... you overclock pretty hard down there eh?

[@phodon129]

As a fellow brazilian, I made sure to buy a construction grade 10A/240V extension that's only 5 meters. Not risking a 4k reais build on saving 20.

[@bananya6020]

Why is brazilian power so dangerous?

[@AP1412]

As an electrical engineer I was waiting for the moment when he touches the extension cords and realizes they get warm/hot.

[@nekrovulpes]

Fondly remembering the time a band at one of my old rehearsal places plugged a 3000w space heater into a coiled extension...

[@salluna1957]

Lord Vermintide that space heater can’t heat on it’s own.

[@plasmachicken]

My PC is also on a extension Cord, but it's a selfbuilt one with eneugh diameter to transver 230Vac 32A

[@saddane6897]

@@plasmachicken 230V doesnt suffer the same drop though :) I have my Pc on 1 socket, on the 2nd ext. cord, i got a 2000W heater on the 1st cord same socket xD Its not a problem untill you start drawing alot of power on the PSU anyways, and being on 230V puts you right inside the input range even with a decent drop of volts :) EU PSU´s are full range too, so it will work untill the same 108V-ish, but cables would however be on fire long before that would happen xD

[@patg14]

I was waiting for him to at least uncoil it.

[@caio7248]

"Brazil: Good Luck Don't shock yourself V" as a Brazilian I can affirm that as every place is different and you should just ask every place you go

[@caio7248]

@ISOHaven I would guess you don't live here to understand how hard that would be here

[@eroscarpo]

@ISOHaven The problem here is kinda like this: um 2011 there was a change in the socket and plug standard tô a safer one, 9 years later it's installed in more than 60 million houses, and our shitty president wants to go back to the old one. Every fucking government always fucks up every thing the last one did, be it good or bad, so it's basically impossible to change standards. Edit: Not to mention how fucking expensive every good electric stuff is. Know the cheap cords in the video? They are the expensive ones where I live. You don't want to see the cheap stuff.

[@pimpolhogg]

@@eroscarpo as a brazilian too.. I think that going back to the old one is the perfect choice. Damn, everything that I buy from another country I have to buy an adapter to it because of the way that it is right now. And another thing. I travel a lot for work and stuff and, for an example, my phone that I bought in Brazil came with a charger with our standards.. Then everywhere I go I have to take an adapter with me, it really sucks. It's not just my phone, it's my laptop, my tablet, my everything that I bought in Brazil. So yes, I do prefer the old standard Edit: Forgot to mention that I know that in this moment of our country this situation isn't the mainstream and by now it's pretty hard to change everything but yeah, I just said what I think about the new standard that we have now, which is safer but pretty crappy to be honest.

[@eroscarpo]

@@pimpolhogg I can relate to your problem, but since I almost never travel outside the country, having adapted all my electronics to the new standard (including changing plugs and all), I really hate the idea to go back to the old one.

[@eroscarpo]

@Hyi Vittu And that is a construction (and culture) problem, not a standards one. In the old standard we still had the ground pin for electronics, but most people just used adapters or simply cut it off.

[@SonicCaliburS4]

Everyone else: CES 2020 Jay: What if we throw a bunch of extension cords together and see what happens?

[@Dillinger86]

lol

[@MoRiWeeB]

No one invite him maybe

[@ron2291]

Honestly though if he went all he would be doing is rehashing all the same info other tech tuners are doing right now so maybe it makes more sense to do something else in consideration of the audience?

[@TySoVm]

That's why I love Jay.

[@Solidlightvideo]

it's meta, every one at CES is on extension cords :P

[@BeardlyNova]

This series of videos should be called "Jay's Shower thoughts" 🤔

[@motoryzen]

😁 Perfect..I'd vote for that if Jay decided to literally name such a video series

[@themandalorian996]

Agreed

[@motoryzen]

@Cerus98 Maybe...either way, I'm thankful for people like him with the courage to test " hmm.i wonder if this is legit too stupid to succeed....safely" things. xD

[@BigDaddyStev-O]

I literally conceptualized a movie today while I was in the shower. And ironically enough it was because I was thinking about jay building custom PCs. Imagine this: Honey, I shrunk the kids mixed with Jurassic Park and The Martian. Anyway I though about how we study ancient times. What about 3000 years from now, how would they study our lives. And then there was a museum with “ancient” tech. And one was the best 2020 build possible sitting behind glass covered in dirt and rock and just 3000 years old.

[@darylscott6372]

@@BigDaddyStev-O jayzpoopthoughts

[@TDG2654]

"It still needs 120V. So it's going start pulling more amps to get the volts it needs, to provide the wattage that it's asking for." This is so wrong it hurts

[@brando12343]

That's why the cords got so hot, their basically acting like resistors, this video is the perfect example of why you don't run anything that draws significant power on 16 gauge wire

[@jasonfullerton7763]

It's hard to listen to Jay butcher the laws of Physics, but fun at the same time.

[@CompatibilityMadness]

@@brando12343 You forgot about inductor effect when cable is rolled up. Having high amps on rolled up cable WILL give you heat issues.

[@timmehh89]

Compatibility Madness you won’t get an induction effect in a extension cable because the active and neutral or hot and cold cancel each other out.

[@CompatibilityMadness]

@@timmehh89 So, it doesn't effect how clean power going into PSU is ?

[@adwaitgoku27]

Jay wearing LTT Stealth Hoodie, says "It's time for another stupid experiment." Checks out.

[@La_sagne]

lttstore.com

[@mschild95]

Jay: This is the cheapest cable with the cheapest insulation *leaves it all coiled up on a wooden table* Me: Oh god he's gonna burn it down for real this time

[@darknessblade7480]

he should have put a induction compatible pot on it with a egg and see if it would bake

[@mschild95]

@@darknessblade7480 magnetic field cancels out because the current is flowing both ways. Nice thought tho

[@darknessblade7480]

@@mschild95 i know that will happen, but it would be a fun joke they could make, when cutting the camera somebody swaps the pan with a baked egg in it, without the 2 guys knowing it

[@docferringer]

Well he can't put them on the floor, that's where all the coolant goes when his cooling loops fail.

[@roji556]

He should also have gotten extension cords with the lowest maximum rated current (usually those garbage white/brown 18 gauge ones) lol

[@goshdamnitross3370]

JAY: Linus is crybaby Also Jay: wearing a LTT stealth hoodie

[@jobbus22]

F this LTT stealth hoodie. It's been in the videos too much. For that price it's a no no as is the water bottle thing

[@Ikxi]

@@jobbus22 Here is a real crybaby

[@TitleTheTitle]

Holy fuck i didn't even realise he was wearing an LTT hoodie

[@madlulz]

@@jobbus22 Clearly you can't make it on your minimum wage job. Vote Bernie in 2020 for wage equality.

[@heytheresakitty]

Buying overpriced hoodies is why millenials cant afford school loans, but you look good dawg

[@ddevin]

0:32 If I REALLY wanted my system to pop, I would get a cheap PSU instead.

[@DrakkarCalethiel]

Always love when I get a PC that has one of those generic cheap silver china PSUs fitted. Especially when the user said something like weird smell or doesn't turn on anymore.

[@christophervanzetta]

@@DrakkarCalethiel "Smoke and flames coming from PSU"

[@NakiriX1]

corsair VS550 gang

[@Kalvinjj]

@@DrakkarCalethiel A friend of mine gave me a broken PC to take the parts out, the PSU had a stuck fan, the cables were brown near the casing of the PSU and when I opened it up the board was all black and even bulging. The last owner was lucky it didn't set the house on fire. On top of that the (all rusty) DVD drive had some pirated emo music CD on it. Must be why the damn thing almost set itself on fire

[@DrakkarCalethiel]

@@Kalvinjj Hahaha, great story! Worst PSU let the magic smoke out and popped a 16 amp breaker. The caps on the primary side where the culprit. Luckly fo the owner, everything downstream was fine. That machine was also the most dusty I've ever had. Even a vacuum cleaner bag has less dirt in it than this poor system! Luckly, I didn't had a single system with cockroaches... until now. :D

[@CorysCat]

Me: reads title Also me: nervously sweats while looking at my extensions cords coming from an extension outlet panel connected to an extension panel.

[@Interrobang212]

If true, you might want to double check the safety of that set-up.

[@BadBoyofBinaries]

lol

[@bryan21evil]

Bro same lol

[@RK-zf1jm]

ahh that sense of brinkmens ship will it pop today or tomorrow who knows, but seriously probably fine as long as you dont have anything pressing down on the wiring. Just curious if your from the states dont your guyes extension cords have to pass minimium safety/load standards they do here in the UK.

[@morgan5941]

It's not the worse I've seen. That prize goes to eight cheap extension cords we found plugged together running across a drop ceiling at work. They were using it to power a Christmas tree. And this was done within five years of the place being rebuilt due a fire caused by an extension cord.

[@jh77sly]

electrical engineer here.... Close enough for me. I come here for the laughs anyhow.

[@MrTmansmooth]

jh77slyIn school for EE I concur

[@rodmongodwood]

u got nothing to say about the coil he built? ^^

[@jh77sly]

@@rodmongodwood They already said "don't try this at home". I've got no issues.

[@Trainmaster909]

Looks like I’m not the only EE here

[@Hitokiri_Ace]

Fair. :) ha I'm just glad to see he admitted to using the wrong type of cable for his custom extension cord. It's fine to be wrong on your own, but showing kids, and people who just don't know something dangerous.. is a different story. Good job Jay.

[@rexpimplemyer3839]

Something that someone may have mentioned already is that using the contractor cable as shown @ 9:45 in the test will also add impedance to the test as well as resistance because of it being in a coil. Each loop adds its own impedance to the circuit.

[@fatere]

i like how Jay is wearing LTT merch yet he has his own merch

[@MisterMike040]

The man recognizes quality

[@daemonbyte]

Maybe he was worried he'd burn it so grabbed the most disposable?

[@ekan97kingen5]

sponsored by LTT. LUL :D

[@SteelSkin667]

Interestingly enough, I don't think he wears his own merch very often.

[@The-Cat]

@@daemonbyte LMAO your comment made me laugh so hard i almost choked lol EPIC WIN for that common sense comment man!

[@shplackalack]

In Concert Staging we call those orange extension cables: "Show Killers".

[@tyredcar03]

yessir

Also 1/4" TRS to 1/4" TRS adapters. Can't count the amount of times someone has tripped over one and all sound goes dead... Well okay on someone else's show as I throw them away when I find them being used on my shows.

[@freednighthawk]

@ XLR, Speak-On and PowerCon for life.

[@Tokikosworld]

@@freednighthawk Powerlock or riot.

[@t0cableguy]

He elbowed the extension cords at the end........ But I guess they are cheap extension cords so nobody cares lol

[@tomr3422]

anyone else think Phil needs hazardous duty pay just being in the room with Jay? Testing Ohm's law not really a new theory

[@krowe985]

I'd love to see this same test but with surge protectors/power strips, to see if a cheap VS inexpensive VS expensive power strip makes a difference on power pull and stability when using all plugs on said power strip!

[@ChiChi9x5z]

Agreed

[@TheTurpin1234]

I wanna see a watt measurement at the wall, versus at the end, to see how much resistance the power cords are creating.

[@TheDeadStyx]

When you start watching these for Phil's laugh in the background

[@buckshot5096]

i dont really hear any of his laughs in some vidios. Also /)

[@misterinfinity4076]

These cords also work as an inductor introducing reactive load into the system. That way you don't just have the resistance of the cords limiting the voltage but also the impedance of rolled up cords.

[@GuernB2]

"5v extra resistance" reeeeeeeee

[@officer_baitlyn]

@@GeneralZap no u

[@Jaker788]

115 is fine. There's a reason American plugs are often called 110 and not 120, it's a nominal voltage under load.

[@_Bonez12]

@@Jaker788 you don't measure resistance in volts, you measure it in ohms. That's what he's "reee"ing about.

[@Jaker788]

@@_Bonez12 gotcha I didn't catch that

[@loempiaboer-up2dh]

@@_Bonez12 well actually you do. But by using a measured an licenced current source. (Four point measurement)

[@kris5187]

Me: Googles; "Should I use extension leads for PC setups", just to check my thinking. KZbin: "HERE COMES JAYYYY TO SAVE THE DAAAYYY"

[@huerta25264]

"we've got lots of computers around here that draw alot of power" OKAY JAY you dont have to brag...

[@aaronshimon7683]

Jay: [plugs in coiled extension cords] Electrons: Inductance, ENGAGE!

[@jibais38]

I was looking for that type of comment, always uncoiled your extensions cord when you are using a lot of power on it.

[@TDG2654]

AcTuAlLy Since the live and neutral are so close together, their magnetic fields pretty much cancel each other out and the inductance is negligible

[@Blackwolfster]

@@TDG2654 True but the coiled up leads trap the heat in and can't dissipate it well.

[@jonmayer]

They would be nice degaussing coils though.

[@ryancox3834]

People saying they dony get hot are full of shit. I've felt it happen myself.

[@HAHA.GoodMeme]

Since I swapped to a high quality power strip instead of a $5 one, I now can OC in the top 2%. would recommend.

[@twoah927]

Strawberry Kitten he definetly did not kill himself with an extension cord

[@misterprecocious2491]

@@StrawberryKitten Epstein is alive and living in Argentina.

[@mk_scorpion_]

Legend says Jay's still winding that cable up...

[@MurpheeLaw]

He actually made this video a year ago. He's still winding...

[@emmepombar3328]

Bigger concern: You didn't unwind it, so you have inductive resistance!

[@ArtisChronicles]

That's me with Ethernet that's too long for places I move into.

[@jobicek]

You mean reactance, right? Have you ever tried calculating inductance of an extension cord on a drum? I'm just asking out of curiosity. I understand the theory, but I have no clue as to what are we talking about scale-wise. I know manufacturers of cords on drums say you should always unwind it completely, but I always felt it was more for cooling. Coiled up cord is not going to cool well and when you start pushing a lot of current, you're asking for trouble.

[@charmio]

Wouldn't that be cancelled out by the current flowing in the opposite direction?

[@FunScientifix]

Charlie Mio TO ANSWER JOBIcEK: You can calculate inductive reactance by the formula 2PiFL where F is frequency and L is inductance in Henry. And the answer is in ohm. To answer charlie mio: No. the current still flows the same way in the wire. There is no relative opposite flow in the cable. So they act like an inductor essentially.

[@charmio]

@@FunScientifix interesting point but the neutral and active lines are right next to each other. The way I understand it is that whenever current is flowing one way in the active wire it will be flowing the opposite direction in the neutral wire. Because the current is flowing in opposite directions they will be creating opposing fields that would (almost entirely) cancel each other out. Given that inductance is a result of energy being stored in said field then there would presumably be nearly no inductive reactance. Another reason that I don't think there's a field is because an AC current clamp meter won't work around an extension cord unless you separate the active and neutral wires and clamp around just one of them. These meters work by measuring this field, given that they read zero when the wires are together it seems reasonable to me that it's because the fields are cancelling out. Am I missing something here?

[@DominionDroneDaily]

hey jay, during my instrumentation course one of the instructors said this to explain wire resistance, he said " wire is like a highway for cars, if you have a 2 lane highway(18 gauge persay), only two cars wide can travel down the highway. but if you have a 4 lane megahighway, 4 cars can go down. the thicker the wire, the more lanes on the highway OR space for electrons to go through "

[@Dwarfi01]

4am, yeah sleep can wait a bit longer

[@pandasdreamlygon]

same here:)) but i will watch it later

[@MindTryX]

PFFFT. 5:30 AM after an all nighter. Sleep can wait :)

[@MoRiWeeB]

@@cybersamiches4028 what is sleep

[@Kludgedean]

Plenty of time to sleep when you're dead ;)

[@mohdmuqri6101]

12:38pm here.....

[@PanadeEdu]

Never ever leave extension cord rolls rolled up unless you like fire. 🔥 This is probably adding much more to the heat of the cords.

[@brando12343]

exactly, if the cords were spread out they wouldn't have gotten as hot but having them bunched together like that will cause them to melt if they get hot enough, the cords are basically acting like a resistor

[@wescottpsmith1965]

Coiled cables can also have significant impedence which can make the system response to changes in power requirement sluggish.

[@MrNeocortex]

They should have a label stating how much wattage you can pull through it while rolled up. You're okay so long as you long as you stick to that. I still uncoil regardless though.

[@AspastIIcBean]

@@MrNeocortex who's going to follow that tho. People arent that smart, even if it is written on the cord

[@nickhetzer2744]

@@wescottpsmith1965 its not about the impedance of a coild up wire but more because the heat from one wire does not disapate to air but into the nex wire this heats em up

[@Sully948]

Yes more crazy Jay science! I love that you are branching out from regular tech videos

[@andrewryder3075]

Since you wanted an E.E. to chime in, here goes: The resistance in the extension cords doesn't (in itself) present a problem for the computer - most computer PSUs will actually function down to 60V or 75V; this to allow for fluctuations in supply voltage and occasional "brown-out" conditions. In fact, AC line voltage will often vary MORE with load and the contact resistance between the plug and the socket than it will from adding all those extension cords. The danger (as you've noticed) with running excessive draws through longer, thinner extensions is HEAT (which can compromise the insulation). As far as QUALITY of power, adding a motor in the same circuit will add more noise than ANY extension cord will; a sudden inductive load (like a compressor, vacuum cleaner, washing machine, etc.) will seriously screw with your power (at least momentarily) and will add noise (continuously). Other sources of electrical noise: fluorescent light ballasts, TRIAC-based dimmers, AC stepping motors - basically anything that will induce harmonics on top of your (60Hz) fundamental AC frequency can cause spikes in switching power supplies that will have to be filtered out by the supply. The more the PSU has to draw (current-wise) to compensate for a lower input voltage, the harder this becomes. Incidentally, the reason European (230V) AC voltage is considered superior has nothing to do with the noisiness or quality of the AC supply. It's simply that less current is required to produce the same wattage. Therefore, a 150W appliance that would have to draw 1.25A at 120V would only have to draw 650mA at 230V, and (since load noise is proportional to current, not voltage) you're less likely to be affected by electrical spikes at lower amperages.

[@therealnotme]

10/10

[@burnsyd17]

great points! I know I'm late to watching this one, but I'm surprised nobody seems to have called out that the power supply in the PC (as he was scrolling through it's specs on his phone) was a PFC (Power Factor Correcting) supply. I'll lay odds a non-PFC pc power supply (i.e. most of them that people buy) would have fared nowhere near as well.

[@ronaldcramer2641]

The contractor cable coiled was turning into a Tesla coil, amp boost.

[@mysterygeekmadness684]

Jay, thank you for making the content we didn’t know we wanted! I love this channel!!!

[@J0ermungand]

This would've been the perfect time to cooperate with ElectroBOOM, ask him to lend you an oscilloscope and his expertise in analyzing the voltage drop vs PC PSU stability. You should also look at the PSU voltages to detect changes in stability. The components themselves can tolerate quite a bit of voltage drop, especially on the 12V line, since most components will step down that voltage to supply things like the GPU, Memory and the CPU. In the end it will probably not be the voltage drop itself that causes the instability, but rather the inability to deliver enough amps at the lower voltage to meet the demands on current.

[@theJesai]

*Jason? Experiments.* *PC? Crying.* *Hotel? Trivago.*

[@officialspaceefrain]

You? Suck like Joe.

[@gravdigr27]

Lol, this video was about 20 years late for me. I have a video of a lan party I hosted in my youth where we played "find the smell". We assumed someone's overclocked rig was cooking. No, me in my brilliance used a 50' extension cord on a reel without unrolling it. The results were eye opening lol. After that I built a power distribution center using a breaker box plugged into the 220v 50A socket for my welder and split off into five 110v 20A lines. It worked well and we used that setup for a decade.

[@Cty801]

The rolling the cables up at the end was a nice touch... Can I suggest looking up the "Roadie Roll"/"Roadie Wrap", otherwise known as the over/under technique? Coils cables so much more neatly, and prevents them getting all tangled when you're trying to unroll them!

[@Adrian-yn4qg]

If you rolled up my cord that way there would be beef.

[@Cherijo78]

Oh yes. Even my cheapies at home get treated with a proper Union Wrap.

[@MichaelScrip]

16:14 - Next video... how to properly coil a cable... OVER-UNDER!!! :)

[@wallacefrey6247]

Commercial dive hose style.:)

[@NeneExists]

I came here to offer to teach him how to properly coil cables!

[@LaserFur]

Back wrap. twist every other loop and fold under.

[@Pantera_NP]

If you use the hand/elbow method you’re guaranteed to have the end tap you lovingly in the EisBalls. 😵

[@soundsaboutlight]

I cringed so hard at the cable wrap, LUL. The other stuff, eh, I'm used to bending the 'rules' in the industry I work in ;)

[@sayjack]

👀👀👀 is that a LTT hoodie?

[@supersimon126]

*Clip to Linus sticking his head in the frame* "LTTstoredotcom"

[@WilliamHollinger2019]

Yes

[@themandalorian996]

@@supersimon126 Yes

[@dill6078]

All the content creators wear eachother's merch

[@stevenjohnson2682]

LTTStore.com 😂

[@eknaap8800]

The math is very simple: 120V@20A=2400W (V*A) In Europe we can draw 230V@16A=3680W (per circuit. We usually have 5 or 6 circuits). Coiling a cord increases its resistance and it will get hotter. (It also creates a magnetic field, which can affect electronics).

[@dhawthorne1634]

We also have 240V sockets here in North America, but they aren't as common and require a workaround to the 120V entering the house. Our 240V, 60hrz system uses two breakers with an attached breaker bar and one is run 180 degrees out of phase to the other, meaning the peak (120V) of one lines up with the trough (-120V) of the other. For high amperage circuits like clothes driers and stoves we have a two different styles of large guage 3-4 blade plugs; for mid-amperage like overhead lighting and fan array for a patio or certain power tools as well as generator hookups for RV/camper and whole home back-feeding, we use a locking 4 blade plug and for standard amperage items like 240V window A/C units, high volume espresso machines and 240V electric heaters, we have a 2 blade with grounding pin, only the blades are horizontal rather than vertical.

[@Kimbp85]

Is this a tutorial for UnderVolting? 🤔 Seems expensive...

[@jakobfindlay4136]

"Good luck don't shock yourself V" omfg that made my day xD

[@MrLelopes]

Brazilians confirm that. Officially it is supposed to be 110v or 220v depending where you live. But... Yeah, good luck with that.

[@CaelVK]

It can literally change depending on the street you live on, for instance my street has 220 but the one above is 110

[@leonius]

Here it's so dangerous that you can die for literaly nothing

[@robert4you]

@jakob findlay 🤣🤣🤣

[@littlescreen9175]

@@CaelVK where do you live?

[@azraelspeaks]

Looked in the comments for the dissertation. Sadly, there was none. :(

[@astronemir]

There’s a good discussion in a sub comment chain further up now. It’s been coming in over the day today

[@Mariachi153]

Ohm's law: V = I * R Jay's version of ohms law: V = I * V 🤔

[@charmio]

Yeah, I was pretty surprised that made it all the way through production in a company/channel devoted to tech. It doesn't exactly fill viewers with confidence when they don't understand the very first thing that someone interested in electronics normally learns. Especially when the video revolves entirely around Ohm's law (not that they seem to appreciate it 😕).

[@bleppss2769]

@@thesaintnoodle not really paradoxes are impossible in this scenario I would just have to be 1

[@gibarel]

I love how right you got Brazil's electric system, some places are 120/110 and some are 220/210, and some are just "POWER"

[@az-yr7yz]

Volts = pressure Ohms = resistance Amps = current

[@emu071981]

Amps should be flow rate rather than current if you are trying to make it easier for people to understand the concepts.

[@nathanbronec464]

Good old ohms law! Or for this application Vdrop = (2*K*I*L)/cmil

[@wumbol0gy871]

Volts is power, not pressure. There are ways to compare power to pressure, but you're skipping a step

[@TheAlexBradley]

Oh yeah then what’s watts you fuck ass?

[@wumbol0gy871]

@@TheAlexBradley lol shit. This is why I'm in mechanical and not electrical engineering. Pressure being there makes no sense to me.

[@SuitedLegend]

yeah i remember plugging my PC+ 2 monitors and my friend's PC and his monitor into a pair of sockets and the lights dimmed fun times

[@legros731]

Lol not possible average pc consume 500 watt Common space heater are 1500 watt and dont dime the light And you have a 200 amp panel at 240 volt = 48 000 watt total power

[@limitisillusion7]

@@legros731 bro, im not even very well versed in this shit, but you dont know what youre talking about. 200 amp panel doesnt mean shit when youre on a 15 or 20 amp breaker. recommended constant output of most breakers is 80% of there max capacity. 120*20*.8=1920 watts. two PCs, monitors, plus lights and whatever else is on that circuit, could easily dim lights. jays compressor was only 600 watts, and ive never plugged in a compressor into a 20 amp breaker that didnt dim the lights.

[@marcusjr80]

@@limitisillusion7 that's not enough load for it to dim the lights. Lighting don't use that much power, especially newer LED lights, unless you use old-school spotlights that draws huge amount of current. And lighting circuit are separated from outlet circuit so it shouldn't effect it. Probably shitty wiring or your whole house uses too much current for a single phase.

[@limitisillusion7]

@@marcusjr80 nope, sorry. Like I said, I'm not an expert, and I know your not either. A sudden load on a circuit will cause the lights to dim from voltage drop, it really isn't that complicated.

[@limitisillusion7]

@@marcusjr80 and lighting isn't always on a separate circuit from outlets. Whoever told you that is wrong

[@PhaTs00p]

5:02 So it's gonna start pulling more amps to get the volts it needs... Uhh you sure about that. I'm no certified pixie wrangler myself but this sounds even more wrong than Alex from LTT describing RACE-LET at CES 2020

[@jobicek]

It's better to say that you pull more current to get the power you need. Obviously, if the voltage is dropping, you won't get it back by pulling more current. If anything, voltage will only drop further by pulling more current. But, if you consider the output of a voltage regulator, not input voltage at the power supply, then it kind of is true. This compensation is, essentially, a function of voltage regulation. If I have a circuit that takes 5 A at 12 V, then I need to output 60 W. Otherwise, I won't be able to hold 12 V. Energy doesn't just appear out of thin air. If 60 goes out, 60 must go in (well, more, due to losses). My load doesn't care what the input voltage is. It's happy as long as it gets its 12 V. And if you're doing it efficiently, the only way to compensate for loss of voltage is to, somehow, pull more current (your own losses are the only other potential source of energy).

[@Wesrl]

Maybe Uncle BumbleFuck can explain this better

[@fuelhemi426]

Omh's law ftw

[@Sheiiko]

@@jobicek Ehm if something need 60watts. Its will either get it through higher current or through higher voltage. Watt=VxA. So at 12V you need 5A. But if you were to run 20V the current would only be 3A.

[@jobicek]

@@Sheiiko You are typically dealing with a voltage source. Your supply voltage is given. If you have a voltage regulator to pull voltage up to compensate sag, that energy has to come in the form of current. And as you start pulling more current to compensate, you will get more sag (how much sag depends on how "hard" the source is). Setting up a power supply so that your 12 V nominal rail is actually 20 V is not very bright, is it.

[@enterplasma8220]

Thanks a lot Jay for this video. Dirty power can be really dangerous for PC's, and while there isn't much you can do if you have a 300$ beater - when you've got a 5K$+ beast on the desk it would be best practice to work on some protection. Unfortunately it's just not a very well known and tested topic. So thanks for bringing it up.

[@Barry_disgruntled]

I know I'm several years late but I've got a question to ask. I don't have 100 ft long cables. I just want to connect my power supply ( 500 watts) to the UPS which is on the other side of the table. The cable that came with the power supply is a bit too short for my liking. Will it be alright if I use a power strip with a 2 meter cable to connect the power supply unit to the UPS ? Thanks

[@xValkyrie93]

The moment you plugged in the higher quality extension cable...... Gave me a lot of thanks to myself with my setup. Our house is split in 2 with the electrical circuits. One side of the house covers 2 bedrooms and the bathroom. The other covers the games room, living room, kitchen and laundry. The whole house has maybe 12 wall plugs. Total. There is a lot of power boards. However my setup cannot be plugged into the games room as it triggers the breaker switch. I have to run an extension cord from the bedroom through to the games room. Because I am plugging into an extension cord the following, 3 monitors, PC, Nintendo Switch, Gamecube, Super Nintendo, Wii U, 32" CRT TV, Bar Fridge, plus a few things via USB chargers.... I did go with the higher grade extension cable.

[@fromaflafl2198]

would have been interesting to see how 12v and v-core for cpu and gpu change with the drop in mains voltage.

[@phodon129]

The PSU can compensate until it can't, and that's when stuff crashes.

[@brando12343]

The pc will still draw whatever it wants and the psu will output it down to a certain voltage, its an inverse relationship, as the volts drop the current(amps) increase, eventually though the power supply won't be able to draw what it needs and it will cause instability or shut the system down

[@JMUDoc]

"Bad extension cords are bad." - Jay, 2020.

[@lukasperuzovic1429]

m'kay

[@PortersMob]

Should have added a meter before the cords as well, then you could have watched the amp draw go up as you added more cords under the same electrical load.

[@rogernevez5187]

2:22 *Brazil: Good Luck Don't Shock Yourself V* Actually, there were 3 cases this week in Brazil that cause a public uprising: - "Irmãos morrem eletrocutados ao empinar pipa no RJ", Band Jornalismo - "Idosa morre eletrocutada ao encostar em fio solto na rua", SBT Jornalismo - "Mulher morre eletrocutada enquanto lavava roupas", SBT Jornalismo

[@erridgeman]

I work for a cable manufacturer in the UK. Jay, I completely agree 😊 volt drop is a big hurdle for many power cables. Great work as always!!

[@avocadoenjoyer8511]

I love these kinds of videos from you. Answering the questions that have briefly crossed all our minds at one point.

[@owlpierce5171]

Armando Montanez asking if an extension cord is good for my computer has NEVER crossed my mind

[@ProjectLunaProductions]

“I’m going to put my hand in the middle” -Jay, 2020

[@Arashmickey]

You want more resistance? I can add more resistance, no problem. [cartoon skeleton x-ray electrocution]

[@davidwilhelmsen980]

5:00 When the voltage drops, the amperage has to go up to keep the wattage the same, voltage wont go up with more amps. Adding more cables will increase the resistance which in turn causes the voltage drop. P=U*I

[@davidwilhelmsen980]

also, coiling the extension cord will increase the amount of heat that gets trapped in the wire, increasing the resistance of the cable. Great video tho!

[@jimmybbeam]

@@davidwilhelmsen980 I scrolled down simply to see if anybody had commented on this. As an electrician, I second your comments.

[@tylerjackson2314]

You will have a voltage drop but the PSU will take more amperage to keep the power requirements. Anything that is UL will have to work at around 110V, therefore requiring more amps. Also, don't forget that P=V*I=V^(2)/R=I^(2)*R.

[@davidwilhelmsen980]

@@tylerjackson2314 You just repeated what I said, possibly wording it better. English isn't my first language so I'm gonna use that as an excuse. :P Also didn't think that putting a lot of equations would help people understand the concept.

[@Kinek97]

If we go into details, we should introduce impedance here, since we are examing the AC part of the system. Also those cords were acting kinda like coils so it is even more complicated in theory 😅 Nevertheless we all understood what the video is about and it was great 😀

[@gh0stp1rate]

Which is why I use 16AWG MIL-SPEC Stranded Hook Up Wire (not the generic stuff that you get from hobby shops) when I make my custom individually sleeved modular PSU cables.

[@lukemcclelland7518]

I'm so happy you made this video. I grind and polish concrete and I always have to try to explain people that I work with and train that they have to use the 12 to 10 gauge extension cords or else you will melt the wires and pop your breaker Non-Stop. Now I have a video to directly show them how it works

[@VishOnPc]

**Me looking at my 5$ extension cord** You gotta go.

[@tomheath8975]

is it 400ft?....

[@VishOnPc]

@@tomheath8975 nah but it's too old and I got a new pc recently. This reminds to be more careful cause I have seen that shit heat up.

[@cleitonfelipe2092]

@@VishOnPc Just do the math

[@THEDAMNED02]

Just get an ups and better to be near a outlet

[@mikem9536]

@@VishOnPc Just make sure it's 14 or 12 gauge wire.

[@chuckthetekkie]

I had a client that I went to their house to do some computer work and she had a 2 prong extension cord plugged into the computer's power cable but the ground pin was not connected to any ground. The 3 prong to 2 prong adapter's ground was just laying on the carpet. The extension cord was the cheap white one for interior Christmas lights. Not something you want powering your computer.

[@Barry_disgruntled]

I've got a similar situation here. I wanted to move my PC upstairs to a bigger table and the cable coming out of the power supply wouldn't reach the UPS across the table. Was wondering if I could use a decent power strip with a 2 meter cable to connect the power supply to the UPS. Don't know much about electricity so a bit of help here would be greatly appreciated mate!

[@sacredsock8031]

Do you have a thermal imaging camera? and on a more personal level i would of liked to see an oscilloscope on that supply to the computer

[@Kalvinjj]

Did you hear him explaining what's going on with watts, volts and amperes? Wrong channel for in depth precise tests

[@sacredsock8031]

@@Kalvinjj yeah, like I said I would of liked the oscilloscope personally. But the thermal shots would of worked enough for KZbin

[@Jaker788]

That's a question for electroboom

[@RaiderOfTheLost]

Stfu

[@Kalvinjj]

ElectroBOOM for sure would do it, and we all know he would find the point where the extensions DO blow up

[@ryche.rising]

Brazil is 127V officially. But some houses (in the past) used to wire as 220V (Phase+Phase) on the entire building (not so in Sao Paulo or Rio, but more common on the countryside). Since you can just add Two Phases to run 220V it is easy to put some outlets in this voltage when using high power or "24x7" appliances like DishWashers, Refrigerators, Washing Machines, and... sometimes your home server, why not.

[@dmirtyisakov8112]

me: running 2 computers and my monitors on one extension cable

[@muaries12]

Compressors have a start peak of x2 or x3 times the power draw.

[@jonmayer]

Same as his vacuum example.

[@dvdemon187]

14:00 I was actually waiting for this to happen. And it took me 10:00 whole minutes to see that Jay's wearing the stealth hoodie from Linus - LTTStore dot com

[@DeeSnow97]

hence the "stealth" hoodie

[@RoninLlamaSan]

dvdemon187 I was thinking the same thing

[@freednighthawk]

That shot at the end of wrapping over the elbow made me die inside.

[@docferringer]

As someone that works in an electrically noisy manufacturing facility, that compressor was the wrong kind of test. Electric motors make an electrical circuit noisy AF and most power strips are too cheap to have per-socket filtering. While that platinum power supply *should* compensate for the interference, you were already straining it with the low voltage, so it's difficult to say whether the crashes were due to electrical noise or the voltage drop (my guess is the noise). If you revisit this in the future, I recommend changing the following: 1) Use a multimeter with an oscilloscope function (or an actual oscilloscope). A visual representation of the noise and voltage fluctuations the PC is experiencing is easier for us non-electrical enginerds to understand. Plus you'll be able to get an actual resistance value for each change you make. 2) Get yourself a Flir so you can show the audience where the hot spots are. You could even pop the cover off the power supply and see what parts of it heat up to compensate for the voltage drops vs. line noise (same with the power phases on the motherboard). It might be fun to use for LN2 overclocking, or even overclocking in general. We like shiny pics! 3) If the multimeter thing is too complicated, a good UPS with power factor correction(PFC) is a good way to show how UPSes can clean up interference and stabilize voltages. Or you could just do a video showing why UPSes are important if you are building a $2000 PC. :)

[@odnankenobi]

2:22 I honestly chuckled. We have different Voltage ratings for different parts of the country, some places it's 127, others it's 220...and other rare ones have more. Good luck!

[@NightMotorcyclist]

Jay's having his Tim Taylor from Home Improvement moments....

[@ricardogaravellinass]

Brazil: 110 or 220v (don't shock yourself hahahaha)

[@ihluis]

always a nice surprise

[@jhenriquen]

127 V

[@PedroLauridsenRibeiro]

It's complicated indeed: www.inf.ufrgs.br/~cabral/Tensao.nominal.estados.Brasil.html

[@stevenwarne69]

@@PedroLauridsenRibeiro wtf lol

[@Phanthesma]

Any reason why voltage system in Brazil is not unified?

[@nberedim]

Missed opportunity for collab video with ElectroBOOM Sad!

[@kubeek]

7:48 115V to 240V is nominal voltage, acceptable values by the standard are +/-10% so below 103.5V you might get worried. But the meter is not fast enough to show really fast dips.

[@IndyJaner]

If this was a car channel, Jay’s be like „we got 5 fewer horsepowers in the tank therefore losing 7 gaspedals of air-resistance“

[@AgentLokVokun]

Today Jay gives a new meaning to extreme under volt.

[@kittyztigerz]

0:52 🤣😂🤣😂🤣😂🤣😂🤣😂🤣 just like electricboom this going be hilarious if u keep doing more lol

[@MyurrDurr]

When your test bench has an rtx 2080 **Cries when my only PC has an 860m**

[@raypar1808]

You can lease to own graphics cards on cuttingedgegamer. It's a real website that you can lease amd and Nvidia cards.

[@MyurrDurr]

@@raypar1808 My PC cannot be upgraded apart from the ram and storage so no possibility to buy a new card and cpu :/

[@aidanpryde7720]

check out zip money. I have a few friends that have used it to buy PC's, and the interest-free payments are reasonable (they are based on the amount you loan, which is up to 10k)

[@katech6020]

I have only a trash intel iGPU

[@rexpimplemyer3839]

Watched this till the end and saw your wrapping technique that I (used) to do. Try this next time, it will save lots of time and headaches with unruly coiled wires and tangles. Take one end in both hands and stretch it out full length. Bring the middle to the end in a naturally laying loop twisting slightly in or out as needed to get it laying slack. Repeat as necessary, gathering all the loops in one hand. When near the last loop or two, wrap the remaining length around the bulk a few times like a hangman's noose. Take the last meter or so in a loop and tuck that loop through the top loops between your hand and the lower rings. Pull the loop from the other side and flip it over the bulk and slide it down to form the final ring around the bulk. Cinch everything up tight and if there's any left of the very end, tuck/pull it back through the bulk loops and let it hang. You can now throw it around, stack it, bag or box it and it will never be a coiled nightmare and will always unwrap and play nice with the other cords. I learned two things from an electric contractor that employed me for one week before I quit. One was that the definition of every obscenity you could call a person must have MY picture on it, and two, was this wrapping method. Enjoy.

[@Godalor]

9:05 short answer is that powerplugs are only limited by the breaker in the circuit, so naturally the maximum wattage is just the voltage in your country times the max amps of the breaker. Most powerstrips or powerbars have ratings on them that work the exact same. Daisychaining works fine as long as you stay below the lowest supported max wattage in the chain of powerstrips

[@RoninLlamaSan]

Like how he was talking about “Scrapyard Wars” and talking about Linus.....as he’s wearing a LTT Stealth Hoodie. Anyone else notice that? No? Just me? K..

[@michaelk9547]

It was the thing I noticed 😉

[@computerwiz4]

It's almost like friends like to bicker about each other in jest.

[@povlrueger3898]

Friends talk shit about eachother bud

[@OverdriveTech]

Finally a video not about CES. Thank you!

[@MrLelopes]

Brazilians watching this video be like: - you don't scare me. You have no powers here.

[@Kalvinjj]

Reminds me of this video: kzbin.info/www/bejne/p2aqYY2godGcerM

[@ssjabelincoln420]

@@Kalvinjj oh my god, did she really come back with a cup of water?!?!

[@Handles_AreStupid]

He has the cords coiled which introduces induction into the equation. This would affect the results subtly and, as a side note, can melt ferrous metals if the voltage or currect in the coil is high enough and the ferrous sample is in the centre of the coil though this is mostly done with DC voltage.

[@ianrafaeltoh7679]

Coiling wires essentially creates more resistance, for example a relay have a coil inside turned more than 500 times depending on voltage rating of the relay so a 5v relay has a voltage drop of 5v.

[@NoelNolNull]

0:53 after watching all those clips I'm suddenly reminded that Jay is a parent

[@bryandiel6773]

So is Linus...

[@thomasr7129]

Would be interesting to see how an "average" PSU and motherboard reacted to the reduced voltage. I assume the PSU and VRMs are able to compensate, since they are of fairly good quality.

[@freednighthawk]

It's mainly the PSU that gets the punishment here. If it can't put out good power it'll just shut down. I would like to see how the various 80+ ratings affect stability in this type of torture test.

[@anlumo1]

The VRMs don't care, they get 12V from the power supply, no matter what. The PSU has to compensate and would get hotter.

[@TalesOfWar]

I can't recall who did it but I saw a video a few years ago comparing cheap and expensive PSU's and how dirty the power was that was going into the system on the cheaper/lower end ones (note cheap doesn't always mean bad). Some of them permanently damaged the motherboards and components because the power was so unstable but unless they were VERY bad you'd not really notice it in the short term. The take away was always buy a PSU from a reputable manufacturer rather than simply spend more money. So brands like Cosrair, Antec, SeaSonic etc (SeaSonic also tend to make the PSU's for a lot of other brands as a white label).

[@thomasr7129]

@@anlumo1 - I assume that a less than good PSU would struggle delivering 12V if the input is - well - less than expected.

[@anlumo1]

@@thomasr7129 A good PSU would just turn off if it can't manage to output 12V.

[@Nick550]

I once accidentally overloaded a power strip one night. I have my pc 7700k @5ghz, 1080ti +50/+400, two monitors, Logitech speakers with a sub plugged onto it. My girlfriend came I to the room to blow dry her hair. Immediately after turning on the blow dryer, everything went dark lol

[@boosteddaily1294]

🤣🤣👍

[@TanigaDanae]

It is not only the quality of the cable but also how times you coil it and how much ferromagnetic material is in range of said coil. An easy explaination for the hot cables (ignoring some details): What happens is that you have (in Europe) 230~240V @ 50Hz which means that you have a change of the electric current 50 times a second. If you coil that up, you increase the strength of the magnetic field but it also takes more energy to turn the field back around. Remember: we have a change in current so we also change the direction of the magnetic field 50 times a second. Putting ferromagnetic materials next to the coil increases the energy it takes to build up the field (this is only the tl;dr). The cables heat up because the cables are "working" on that magnetic field. Rolling out all the cables can reduce this effect but it will always be present.

[@ZealofSparta]

As someone who works with a number of electrical engineering projects, I appreciate this PSA. We may have had a clients with issues drawing too much current through too little wire....yeah....

[@Zommari]

Never ever live cable like a bunch of spaghetti on 1 pile because they gonna ower heat like they almost did in your case. Even one on spool need to be extended.

[@JimTheKid]

Im watching this on a pc on a extension cord

[@icantseeanything.7625]

same af.

[@tommyboy054]

2 minutes in and I'm already bracing myself.

[@laurenbro44]

And in your case another thing adding to the heat and resistance is the electromagnetic effect of a coil. Since the cheap cables were neatly rolled, they Form a large coil adding more resistance due to inductance. In my workplace we had two waffle irons and a cooler connected to 30m of cable. At full power we were almost at 16amps, the drum breaker popping a few times on us with 230V. Without the cooler and just the irons running at approximately 2400W for repeated amounts of time, the drum was getting fairly warm

[@theoldschoolgamer6199]

That's why the wires going to the outlets, lights, etc, are chosen accordingly to the breaker. Then, the wire don't heat up as much and don't cause fires. Up here in Canada, 14 AWG minimum is required for a 15A breaker. And if your load, for example an outlet powering your PC is at a long distance, like 100-200ft, voltage drops. For solving that, an equation is used with a few charts to determine which gauge of wire is required for that application...but it never lowers the gauge! 16 AWG is a fire hasard!