But it's incorrect from the Title to the end... so what are you thanking him for? Blind leading the blind. This guy is WHOLLY unqualified to speak on this subject and should stop. Polarity? In an AC system? Pressure side? SMH

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

ut it's incorrect from the Title to the end... so what are you thanking him for? Blind leading the blind. This guy is WHOLLY unqualified to speak on this subject and should stop. Polarity? In an AC system? Pressure side? SMH

For what? Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

@@DiffEQ don't care my tester show the polarity reversed as well. your opinion is unwanted period

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

@@DiffEQ To bad you have no content or followers.

For what? Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

@@DiffEQ One of the wires in AC is at the ground potential and another has alternating voltage compared to the ground. On a properly working system you will not get shocked from the neutral (grounded) wire. This is basic electrics.

In Europe toasters cut both wires. I would be amazed if they did not do that in the US.

@@okaro6595 Double throw switch in the appliance?

@@tedlahm5740 I have not opened but the both sides cut when the tray comes up.

Informative... but WRONG.

I'll be doing more soon. Checkout my website HouseKnowHow.com. I'm writing articles for the electrical section now.

Computers work perfectly well with reversed polarity. Maybe if there is an UPS it might not work.

Assuming there's a plug on the end of the cord, look at the width of the blades on the plug. The wide blade is the neutral blade, the narrow blade is the hot blade. Then look for where the cord comes out of the plug. If the ridge is on the wide blade side it's the neutral side. If it's on the narrow blade side it the hot side. If the blades are the same width then the plug does not enforce polarity and the ridge on the wire doesn't indicate polarity either. I hope that helps!

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

@@DiffEQ A textbook example of the problem of having little information (as opposed to none). There are two wires, one of them is grounded and the other is ungrounded. The grounded wire is of course always at the ground potential. Now there is a problem as any properly designed toaster would cut both wires when the tray is up.

Hopefully you can test for AC voltage with your multi-meter. Put one lead on a hot (black/red) wire and the other on a neutral. Test it on something you know is live so you know what you're doing. Be careful!

@@HouseKnowHow Many electricians use a non-contact voltage tester as it is much safer than other types of test equipment. Your caution about testing it on a known live circuit still applies.

I'm sure your friend damaged the fan in some way if there was smoke. How bad I can't say. I don't know what the risk is if he continues to use it. The thing is cars run on DC (direct current) and homes have AC (alternating current). They are very different. If you run an AC motor with reverse polarity it will likely run fine. Whereas with a DC motor if you run it with reverse polarity, well in some cases, as your friend found out, you get smoke! Good luck with the car!

All good points. Thanks.

I have a gfci outlet to the left of the kitchen sink and another gfci outlet to the right of the sink and i have a non-gfci outlet downstream on the kitchen island. Are you saying that i should not put any wires on the load of the two gfci outlets and no wires on the load of the non gfci outlet on the island? Help, please!

Dice Roll. Extremely well written. As the amperage goes up (because the resistance goes down) the wattage goes up. Thank you for keeping us informed.

Awww, that poor toaster! Now, SUBSCRIBE, for more of my handy tips!

You are joking, right?

I would hope 2 days doesn't matter too much since it's been that way for a while. And, I don't know all your details. If you'd like a little help solving this to to chat for a very reasonable fee, please contact me via the HouseKnowHow.com contact page. Thanks, Martin

What was the fix? What happened to cause the hot/ neutral reverse?

I have the same problem: I have the main wires coming from the main breaker box then three runners; one outside one inside the kitchen outlet and one to the dishwasher and I check the wires and reconnect with a new GFI and same thing take everything a part thinking something was wrong in my part but seems right. Any suggestions? It will be appreciated :)

@@cpsadp99 reverse polarity on any fixture (light or switch or outlet) will charge neutrals on all fixtures downstream of that fixture.

See 👆🏻

😂😂😂

Some countries have standards on how the outlet is wired like in Finland the phase is on the right but having it on the left is not serious enough an error that one should call an electrician to fix it as you can insert the plug either way. Toasters here cut both wires. Some type of plugs fit one way like the French grounded socket. Czechia uses the same plug but they wire it differently (phase on the left) so anything grounded designed for French will have reverse polarity in Czechia.

Incorrect. Neutral is bonded to Earth ground only at the first Service Entrance. It is never bonded downstream. Secondly, you either have a phase (hot) conductor or a neutral (grounded conductor), not a hot and a ground. Ground is not required for power distribution and many appliances don't use a grounded plug. The US is not 120VAC, it is split-phase 240VAC. 240V devices do not require or utilize the neutral (split phase) conductor so BOTH conductors are hot and there is no neutral. Stay in your lane is my advice.

Polarity is the established term for it. It was used already in the patent application of the sockets.

It's exactly the same as if you plugged your device into the reverse polarity outlet without the power strip in between them.

The power strip has really no issue in it. The only thing I can think that if it has a switch it may break the neutral. Power strips are really very simple devices.

The neutral wires are never hot. They should always be a 0 'potential' or voltage because in modern buildings the neutral wires are grounded (connected to the Earth). And the ground (Earth) is defined as 0 potential. The hot wire voltage oscillates from +120 volts to -120 volts 60 times a second. So the hot wire whether it's at +120 or -120 is the dangerous one. I hope that helps.

@@HouseKnowHow thanks for the reply. It is helpful. I'm not trying to be "cheeky" but I'm really trying to understand this concept clearly. So are you suggesting then, that if we assume that a house is properly wired and a child sticks a metal object into the NEUTRAL slot of a wall outlet while barefooted standing on a bare concrete floor, he will NOT be electrocuted? After all by this explanation both the neutral wire and the child are both grounded and at the same "0 potential".

Theoretically your are correct. But I won't be testing this theory with my child! ;-) Inside a main electrical panel the neutrals and grounding conductors are 'bonded' (connected) together. This forces the neutral to be at ground potential which is defined as 0. This is also why when you drag your feet around on a carpet in dry air and you build up a static charge that it is dissipated (and you get a shock) when you touch something that is grounded like the screw holding a cover plate on an outlet or switch.

For the most of the world it does not matter. Here toasters have double pole switch. In Europe most plugs are not polarized. Where they force polarity (grounded plugs in France, Belgium, Poland and Czechia & Slovakia) there can be different standards or no standards in different countries on the polarity. No both are not not. Neutral is always neutral, It is grounded. The other one is hot it varies in the US between +170 and -170 volts 120 times a second. Note that the equipment does not care winch one is grounded or even if neither one is. It cares of the voltage between the lines.

I don't know what round outlet you are talking about. Can you refer me to a pictures somewhere?

@@HouseKnowHow in Indonesia standard socket is EU type

@@SyahrilBaharuddinSellangme I don't know about EU type outlets. Do some research on Google.

I don't know of an easy way to determine this. There may be markings on the wire itself, but how to know what those markings mean is the hard part. If you happen to plug it in backwards and use the device it will likely work fine. Just don't take the thing apart while it's plugged in. To be cautious you could get a voltage sniffer and make sure the box isn't hot after you plug it in. You may want to take it to a high-end stereo shop and ask them to figure out the polarity for you.

Sparks, heat, possible fire, possibly a flash-bang that knocks you back, makes you blind, etc. The circuit breaker should trip when you do this, but the other things can happen before the breaker trips. So... I don't recommend doing that! :-) I need you alive to watch upcoming videos.

Great idea! And, I recommend putting your pizza in an oven. :-)

@@martinnewmark2716 Or in a toaster over or air fryer

I don't understand your question.

I'm sure you could, but I don't know how to do that. Talk to an electrical engineer.

@@HouseKnowHow DPDT Relay with a multivibrator circuit.

@@EricDavisED A cat detector using a laserbeam breaker circuit connected to an FM transmitter. I could use a 433MHz transmitter and matching receiver relay. That would be better but I figured it out already using the FM radio. I also tried it with the 433MHz modules and an IR sensor module and it works very well. That is more practical.

No, the neutral wire is always 0 voltage. The hot wire goes from +120 volts to -120 volts 60 times per second. So you could say the polarity is changing but with the neutral always at 0 voltage it's the hot side that is simply switching from + to -. Whether the hot side is at +120V or -120V it's always dangerous to touch. I hope that helps.

The neutral wire is grounded. It cannot become ht as hot is measured relative to the ground. Also the polarity changes 100 times a second in Europe and 120 times in the US. The polarity changes twice in a cycle.

The black wire switches from +120 volts to -120 volts 60 times per second. Hence the 'alternating current'. The White wire is always at 0 voltage relative to ground (assuming the system is wired correctly). That's why the black wire is referred to as 'hot' and the white is referred to as 'neutral'. Note that current still flows through the white wires.

Yes they alternate, but the neutral wire, which originates from the center tap of the transformer secondary windings, is always the current return. The hot wire, which originates from one end or the other (pole or line) of the secondary windings is always the power in. The voltage from each end of secondary windings is 240v and center tap, as the name implies, is 120v. In a 240v line there are 2 hot wires, one originating from each end and there is no neutral wire. The voltage and current alternate direction and polarity symmetrically, so reverse polarity wiring does not exist.

Do the wires stay the same. The voltage just reverses 120 times a second. The grounded conductor is at zero patenttial white the ungrounded conductor has an alienating voltage referenced to earth.

Wisdom comes with experience!

True I've been shocked from 12v the other day wiring in a new fan for the living room I mean it didn't really hurt but it scared the crap out of me

I don't understand your question. Please re-phrase. Thanks.

@@HouseKnowHow sorry, I meant, is it the same logic for alternative current? Is reverse polarity a bad thing on alternative current? Im new to that so sorry if its stupid question

@@drdzdd I don't know where you are, but most homes have alternating current (AC). So, in my video I was referring to alternating current. I've never heard of 'alternative' current that you refer to. I'm guessing it was a typo, or something I don't know about. For devices that use 'direct' current (DC) (cars, most electronics, anything that uses a battery, etc.) polarity is more important in that if the polarity is reversed the device likely won't work, and can be damaged. I'm not an electrical/electronics genius, but I think when we plug our computers into an AC outlet in our home the power supply in the computer converts the AC to DC before sending the electricity to the main components inside the computer. I hope this helps.

@@HouseKnowHow thanks so much for your reply man. Its not a typo but incorrect translation, ok so I got it now, besides im in France. Thanks abunch for your time

Thanks for that feedback, I agree. As I get more experience my presentation is getting better I think. Checkout my latest videos.

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

Thanks! I'm working on getting better at my delivery.

I thought I covered that in the video... If you still have a question after watching it again, let me know.

@@martinnewmark2716 That was the question...And no you did not.

@@joederbo6151 In the video where I talk about the toaster having reverse polarity and all the wires inside the toaster being hot as a result, because the reverse polarity causes the toaster switch to be on the neutral side..., that's the result of reverse polarity. The toaster will work, but now the neutral is switched instead of the hot. That is the consequence of the polarity being swapped.

@@martinnewmark2716 It is a badly made toaster if it assumes the socket is properly wired.

Consider some hearing aids bud

A little quiet, but clear if you turn it up a bit.

@quintonfloyd420 My hero!!!

Thanks for your feedback! I'm working on getting better at this.

You know you can increase the speed in KZfaq

Too bad it almost all BS. Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.

Black isn't "ground" though. Red/ black are often both "hot". 3wire= 2 hot, black and red=hot, 1 white neutral, 1 ground.

Black is usually hot bro. My first action on seeing red & black wires is usually checking for 220V.

I think what John is getting at is that (in a very basic sense) the color red LOOKS like something hot (fire) and dangerous. Plus, red is positive and black ground for DC (automotive) batteries. I agree with John… Whoever originally standardized the colors of AC house wiring made it complicated by using black for hot.

You are WHOLLY unqualified to be giving advice on electrical systems. Most glaringly, there is no polarity on AC systems and even in DC systems there is no "pressure" side. How are you this ignorant and not know it? Dunning-Kruger, no doubt. STOP. This is the blind leading the blind. How do you explain 240V circuits where neither conductor is a grounded conductor, a.k.a. neutral. JUST STOP! This, viewers, is why you don't use KZfaq from randos for explanations/understanding. SMH Unbelievable.

@@fisheye42 Because you don't understand it doesn't make it complicated. In the EU, the hot is brown and the grounded conductor (neutral) is blue even though it's not split phase. (220VAC, 50Hz)

Most plugs have a long prong and a short prong, so they fit into the outlet only one way, and for exactly this reason.

Some appliances don't require polarity when plugged in. They should have internal protection for it. Or the appliance you are using is very old.

For what? Baffling you with the wrong information? There is NO POLARITY in an AC system and there is no "pressure" side in AC or DC. This guy is wholly unqualified to be making videos on electrical system testing or understanding. Ugh.