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

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

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

"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

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

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

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

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

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

"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

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

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!

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

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

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.

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

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

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

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

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 "

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

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

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!!

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

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

"5v extra resistance" reeeeeeeee

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!

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.

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.

4am, yeah sleep can wait a bit longer

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

I always wanted to know what happens when to many computers are on one outlet. I'll be looking forward to that video! Enjoyed this!

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

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

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

That little danger montage is an incredible little piece of editing lol I can't stop watching it

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

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

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.

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"

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

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

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.

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

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

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

Wow great video! A factory I used to work at would daisy chain ⛓️ extension cords with lots of equipment. The safety guy taught us not to do this so we fixed it. Definitely could be life saving info.

14:00 yeah, there was that OG Mythbusters episode (68, I think) where they tested Christmas lights with extension cords and some melted and shorted. Heck, just this past Christmas, our tree was pulling ~440W from the wall. That thing was throwing some warmth.

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.

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

Just the information that I was looking for, thank you Jay!!

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.

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

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

12:14 ooh, that happens when i turn the kettle on at my dads house, but if we turn the heating on the entire house trips soo...(it actually only happens when we manually turn the heating on, if it is on automatic, it works just fine)

should you also take into account the length of the power cable once it leaves the transformer leading into the building and the circuit breaker along with the length of the wire that leads to the power outlet you are using?

👀👀👀 is that a LTT hoodie?

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

WOW. Thanks to Jayz video I just learnt Australia (my own country) had different mains voltages between states. I live in WA and it's 240v here, same as one other state. I'm shook...

Haven't enjoyed a Jay video in a while, this was old school funny Jay2Cents! Nice job!

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

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

You should make a video about power strips if you haven't already (haven't searched the channel yet for it cause laziness)! I've always wondered about the differences and impacts different strips have from the regular ones you can get at Walmart to the beefy ones you can get elsewhere!

2:21 Hey! Brazil use both 100/127~220/230, we do have places who only use 1 type but most houses can go dual if it's need!

I would like to see your results on multiple pcs one breaker, from my experience i find 4 never trips a 15 amp breaker, 5 should work if all the machines arent power hungry, and 6 works in web browsing but not gaming.

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

Nice to see that your computer background is a photo from Rio (10'35"). Anyone can see the "Pedra da Gávea", "Morro Dois Irmãos" Ipanema beach, Arpoador beach, Devil's beach, Copacabana fort and the beggining of Copacabana beach (from left to right).

Temps also go up in rolled up (packed) condition. You should always roll down the entire spindle or lay out the extension cord when used.

If you measure wattage at the socket and the end of the extension cable, it will tell you how much power is being lost due to resistance (heat).

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

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.

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.

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

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

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

As a high voltage lineman with an electrical engineering degree, I must say you did a pretty good layman's ohm's law explanation. Good video

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

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

I think it's a great ad for how tolerant that power supply is. I seriously doubt a lesser quality one would have done so well.

I will also add, in the power delivery field, a plus our minus of 4 to 5 volts at your meter is what we consider good voltage. So, if your at the end of a long power line run, you can have 115 volts at your meter and still pass code for inspection. That also adds to voltage drop in your home. 110 volts is where we will add a transformer to your home.

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

Missed opportunity for collab video with ElectroBOOM Sad!

do more on 120 vs 230. multiple 24pin extenders. more in the office and so on. it's a interesting subject and would definetly be interesting to have a video regarding general power delivery to the computer since there is so much focus on the actual power supply.

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.

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

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.

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.

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!

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

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

should do more that kind of endings.. jay wrapping it up :D

It makes me wonder if the interruptions in a contiguous line of power introduce most of that resistance (i.e, plugging in multiple extension cords vs using one, very long extension cord). I wonder if you just used one long exension cord, if you would see a difference vs 4 extension cords.

lol! eveytime I see his vest i hear linus say: LTT STORE DOT COM hahaha

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

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

The cable coiling at the end XD Ah, memories from my USAF days

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

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.

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.

Hey J, follow this up with a thermal cam of the cables as well as power strips