Hi. Have you ever wondered if there's any limit to how many of these double adapter or power board things that you can actually plug in series? Well, I Found 283 of these in the dumpster. so I thought I'd Try it. 283 double adapters all in series.

Let's go all the way down here. All right how we're going to test this: I've got a load here, which is, uh, just one of those element uh, heater things. uh, selectable. one kilowatt, two kilowatt.

I've got a set to two kilowatts and I've got both of my power meters are in series here, so I'll put one at the start, one at the end. just want to check the difference between these. they're slightly different cows. 2.03 I don't know if you can see that, but it's pretty close to being on.

So yep, one at the start, one at the end and we'll see how much power it drops. Got Sagan here with me? Um Sagan Just remembered. Um, we actually need a double adapter here because we've got the Uh plug in the power. we have to plug in the power meter where we're going to get a double adapter from.

Well, I'm looking around comes in double adapters. Maybe if we check them there? Oh wait. Mercy What? we have: 283 double adapters? Wait. But we've already done the intro.

We've already shot the intro. Oh wait. I use the exact number. We can't just fudge it.

No, we can't Oh, you get a double adapter from I Just realized something. Say again, what this end here is. The female is the out let end and the power we've got come in is the dungeons right here. so we've got it back to front.

What do you think our chances are of flipping this entire thing around without busting it like zero? I Got enough cable and I found a double adapter. Okay, now here's our input. Ironically you because we put it back to front. we have to power this through five extension cords.

But anyway, here's our input. Okay, so I've got no load whatsoever. So we've got 241.3 volts in and you can see 229 microamps. So there is actually some leakies.

It's 54 milliwatts of leakage there of just the capacitance of all this. So Sagan can you disconnect that and you can see that the power dropped to zero? So plug that back in and so trust me. I've got nothing connected to the other end. There you go.

54 milliwatts of just the uh, extra uh, capacitance and reactants of this bad boy. So go all the way along here and there you go. like well and the input to my other power meter. but it is actually disconnected so you can see what's the voltage over there.

241 Was it something? Well, we got 240.0 Here here we go: 283 double adapters. That is just the fan. so just the fan takes 18. Watts Yes, 17 Watts Okay, 239 volts.

So it dropped a little bit. One kilowatt, it's coming out. Is it drawing a kilowatt? No. 811.

It's down to 202 volts. Wow, that drop is massive. Say again, it's down to 202 volts. Um, and tried to draw two kilowatts out of it and struck down to 182.

volts. So it's it's massive. Wow. 283 adapters.

There you go. But you can I mean I'm I'm still getting warm out of this kinda. It's not very. It's not very good, but you know it's still.

it's uh yeah, it's still drawing 1.3 kilowatts out of this thing. and I'm pretty sure this is, uh, non-compliant as well. What do you think? you think? This is a compliant to the analytical standard 283 adapters? Yeah, yeah. and let's go back to the other end and have a look.

Let's see what happens on the input input should still be good, although we are going right along five extension cords. which is kind of dumb, but we need to know the yeah and there you go. 228 volts going in. So there you go.

So we can calculate 228.2 so we can calculate the voltage drop across all those adapters and we know our current is 7.31 amps was. the current at the other end should be the same current in should be current out. So there you go. 1.667 kilowatts.

So 7.31 amps. Let's go back again. and 7.319 Yep, there you go. 7.32 So within the margin of error.

So there you go. I'll whack up the calculations on the screen. Now for that. Uh, because I'm not going to do that.

Can you do that in your head so you can to 283 too much? Lesson? No, no, not here for a math lesson. Okay, there you go, but that's interesting, huh? So um, the answer is yeah, you can, but not recommended. So let's go to Dave Calcare and see what the power loss is in one of these adapters, which of course includes. it's not just internally, but uh includes the uh, you know the actual Mains connections over here.

If you haven't seen an Aussie plug before, then there you go. This is an in compliance one because it's got the insulation down there on the pins. That's to prevent you from zapping yourself when you, uh, pull the plugs in and out. So there you go I'm active neutral and Earth down there.

And of course the earth makes our contact first so it's a little a bit longer. Is that a smiley face or a scream mask? Hard to tell. Anyway, the total power loss of 283 of these in series is the input voltage because we it was 240. but then we had some drop across that uh, 20 odd meters of those five extension uh cords plugged together.

So the input voltage to the first one of these was 228.1 So you're going to subtract the output voltage which was 187.65 and then uh, that's your voltage drop and V times I gives you your power. So times 7.31 Amps 295.7 Watts So that's going to get toasty warm and it's coincidentally, not far off. basically one watt. Um, for each one of these double adapters So 200 and the total power divided by the number of Uh adapters 283 1.045 Watts So just call it one watt loss per double adapter like this.

So yeah, let's uh, crack this open and see what's inside. Whether or not they use discrete wiring, or whether or not they use like a brass, you know, contact piece. that'd be my guess, but you never know. Anyway, it's got those uh, weird security thingies in there now.

of course that's only the total loss and we are assuming that the power drop is like the same across each one of these, but we could have one that's like particularly bad and it's like heating up a lot. I should have used my thermal camera actually I might go back down there and uh, unfortunately, I pulled it apart. but I might reset it up and do a thermal camera test just to see if there's not one dodgy one. There you go, it's wiring instead of like having like a formed brass contact which is I've seen in uh, other double adapters.

Surely that would have been a lower manufacturing cost than having the wire. You know, like somebody's got. You know you've got a crimp that you've got to crimp it. You've got to form it, You've got to cut the cable to the right length and all that.

You know. they've even used the correct color-coded wires in here. Um, even though you can't access this, you know, so it does, technically doesn't matter. So yeah, I expect that to ultimately have a like a higher resistance uh per unit than you'd get if you just had like a solid brass strip molded into some plastic.

That's what I would have expected and then you thought maybe they couldn't form it. You know, maybe it costs more to form it then I Don't know. leave it in the comments down below I wouldn't think so. Can we? actually? Oh yeah, there you go.

There you go. that's like a press stud. It's just like a copper stud that uh connects that to the pin. but yeah, I don't know I Like why can't you just form that like in one like continuous brass thing and have have it going all the way over there? I Would have thought that'd be better, but anyway, they do have a decent sized cable on this.

so this is an Alec brand which isn't exactly a A No. Neymar So I could I can measure that? but that's probably you know that's a decent amount of copper in there. so obviously most of your one watt loss is uh is coming from your uh like the actual contacts because this stud thing seems to be fairly solid whether or not that's consistent. over all of the units.

I Don't know, but it seems you know, seems pretty good. The machine that they've got to, you know, they'd have a custom machine that, uh, crimps all that. That's all right, but it's just a one watt total loss per unit. Um, interesting, huh? I Really did not expect that high I expected.

you know, a lot less than that. and I have no idea why I wrote Milly Watts there? that's obviously Millie Ohms there you go home. Ohm ohm So nine and a half milliohms, um a total uh resistance. So it's like total drop.

So that includes both Uh wires here and all the Uh contacts as well for each um individual section. but most of that resistance is going to be in your just your plug contacts. here. you press plug contacts because you know not a huge amount of force in those and you can get you know, corrosion on them and crud and all sorts of other stuff like that.

The copper in here is pretty good. It's going to have minimum or loss. The crimps seem pretty decent and those studs seem pretty decent as well. So we'll just see if we can ballpark measure that.

I'll use my LCR meter, I'll null out the leads like this, and if we stick a probe in the clacker. oh like that. that's actually that's a significant amount of force actually. Um, so yeah.

Oh look at that. Oh yeah. ten. There you go.

Um, 8.7 milliohms so you double that? Uh, of course. and uh yeah, you're around about that. uh, 20 there. so that works out.

So yeah, leave it in the comments. Are you surprised that there's one watt loss in each one of these things? I certainly was. Anyway, hope you found that interesting. If you did, please give it a big thumbs up.

and as always, discuss down below, catch you next time. All right! I've reset it up here and uh, and we're going to use the flow. There's the PowerPoint there. so it's currently at uh, well, the cable there is at 32 degrees.

so let's follow the money and there you go. You can see that the uh, the floors at about 21. degrees, fairly constant temperature down here in the dungeon. Let's uh, have a look.

I'll try and keep this. sorry he's saying exactly uh Steadicam You can see there are differences. like there are like a bunch, like you know, two or three in series. There they're about 36 and then others jump to like 30 something like that.

There are a few that are a bit out, but not by a huge amount. We'll come back to that. so let's just go along and you'll see. This is like a common pattern.

There seems to be like just groups of these that are kind of a little bit hotter, but not like huge. It's not like dissipating like 10 times the power of something else and we can just keep going. Always keep going. but you'll see it's fairly consistent.

I Mean you know you could get in there and individually retweek each one of those because they are sort of like a uh, snap kind of fit. um so to speak because you can hear them like sort of like click into place and they're all pretty much in. But maybe you know you could reseat a couple like there's 35. but there's nothing that is chewing like.

you know, there's no one of them that's chewing like 50 watts and they're all sort of like, reasonably, equally contributing. Not absolutely perfect, but you know, good enough when you average them all out. So yeah, why are we getting little subgroups like that? I'm not sure. Maybe it's just the way that uh, we like have assembled them like a flex them like I didn't re-seat each one of them as I put them in.

so I sort of like carried them out in groups As the end of it, the cable there cables at like 28 degrees and then there's the heater. So there you have it. It seems like you know the dissipation is fairly consistent across all of them. It wasn't one bad one at fault so, but you know there are some variations between units that's for sure catch you next time.

I'm not sure what's more satisfying stringing them in series or arranging them like that. Tough call: summon the energy of the portal of power.