Ground Neutral and Hot wires explained
Ground Neutral and Hot wires explained
Ground neutral and hot wires explained. In this video we look at the difference and purpose of the ground wire, the hot wire and the neutral wire in a north american residential electrical system. We look at ground faults, GFCI, current, voltage and simple examples for each.
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Why is the neg a hot wire? I’m confused. I thought the hot was a positive? Someone please answer
For any type of work to be done, something has to move
Is the hot wire the UKs live wire?
So from what I understand and please correct me if I’m wrong; The ground is connected to the neutral terminal, and thus, should current run along that path where the circuit then becomes: live directly to neutral, this will result in an overload of the fuse. The fuse would also trip due to overload of course in a similar fashion if live touched neutral. It’s almost like having two neutrals to an earthed applicance, but of course, one is never used under normal operation and if you did, you would ground fault the entire house. Normally the ground wire (i.e. this additional wire from the neutral terminal going around the entire home should have no current flowing through it and if it did, that would be leakage/ground fault?) How can we test and isolate a ground fault? Would you go round every socket with a plug in tester and/or disconnect every appliance?
I like this video, it’s a pretty good explanation. The only notable discrepancy I’ve found so far has to do with the ground. Yes, he covers grounds well, but when he starts talking about appliances and metal mounting surfaces being ground he explains that it is to protect you from electric shock, but not WHY you would be shocked in the first place. The ground serves a dual purpose in that it, along with his mentions, discharges static electric fields that can cause shocks (like from your dryer, which is sometimes serious enough to be fatal, at least if you have a weak heart or a lower resistance than your average joe) and cause instruments like multimeters to misbehave or create circuits that don’t behave according to standards.
An example would be in older homes that either don’t have a ground or the ground was simply cut short and abandoned because some moron thought "oh, what’s this useless wire for, surely I don’t need that", and then when you have to troubleshoot the circuit to identify the problem you get voltages across the board instead of 120v. Seen it many times unfortunately, we’ll get a call about outlets that don’t work, ground is snipped off at the (also usually metal->) box and we get anywhere from 60-100 volts so their TV wont turn on or their lamp bulb is very dim when plugged in here instead of there.
Hello The Engineering Mindset – you mentioned that neutral carries the difference between current used from 2 hot wires. Does it mean we should try to balance the load in such a way within our panels so that neutral always carries 0 or close to 0 Amps? or not really?
Thank you so much!
Even though this video presents most of the topics in a very nice and understandable way, there is one overly repeated statement that just hurts my ears. "Always trying to get back to its source"
Please be aware that this sentence in its depth is nonsense. Electrons do not care where they came from. The only thing that matters is to connect something that currently has less electrons than its "natural" state would be, therefore it is eager to take up electrons from the environment. The battery is just a clever thing that happens to provide both requirements in one pack – a pole that has excess electrons, and a pole that has less electrons then it can naturally take, so the current flows. It is a tiny difference in describing the same topic, yet it leads to fundamentally different imaginations about the same topic.
Where are the videos for European circuits? I can’t find them anywhere.
Great video. Live your stuff.
Not being critical, but I just noticed after 3rd view, at roughly 5:00 the illustration doesn’t match description. Load is on same buss.
"The neutral wire carries the USED electricity back to the power supply? That’s hilarious. There is no "used electricity." The current in a normal hot conductor is always identical to that in the neutral conductor.
Wrong: I was hoping to learn something but my confidence immediately went down in regards to you. At 1:38 you stated electricity flows from (-) to (+) but you are wrong. It flows from (+) to (-) where as (+) is hot. With you starting out completely wrong I began to wonder how much I can trust the rest of the video.
You mention "in North America" several times. Does this include not just the US and Canada but also Mexico, Guatemala, Nicaragua, and other countries?
Pretty interesting to watch this as a european to see the differences between our systems 🙂
Thank you Great video
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4:31 *Important:* assuming sinusoidal steady-state (which is almost always assumed), the magnitude (or RMS/effective value) of the current in the neutral will equal the difference of the magnitudes (or RMS values) of the two hot wires, _only for purely resistive loads_ (such as incandescent lamps.) If loads have inductive components (such as motors), then the statement said @ 4:31 no longer applies.
At 3:49 when you connect the leads from the multimeter to both bus bars shouldn’t the voltage be 0? There wouldn’t be any difference in potential between the two bus bars
+
You deserve to be accredited so you can be giving tests and certifications with information like this. IM SUPER GRATEFUL!!!!
Excellent
i need help, i spliced an outlet strip into a live wire in a light pole with snap splices but light won’t turn on on outlet strip
awesome explanation, thank you sir
Excellent stuff. But would you pleeease also do one or two for (nordic) Euro-standards, i.e. 220V?
Supported my first YouTuber today. Your videos have been super useful to me. Bought a coffee mug. Thanks Paul.
Why would electricity try to return to its source? That doesn’t sound right at all.
Thank you for the great video. I have one question after this video. Since we using AC, current are alternatively back and forth. Then, I think, there is no difference between hot wire and neutral wire because neutral wire will become hot wire for half of time. Why current flows one direction in AC? Can anyone explain this question in easy way?
Easy to understand on a DC circuit. Not so easy to imagine on AC. Current reverses 50-60 times per second. Doesn’t that make the neutral "Hot" during that current flow?
Thank You!!! /And, amazing, poetical, that lightning seeks its way back to Earth 🙂
The path of flow reminds me of a mouse trying to find the cheese. Hey Paul, can you please do a video on welding current, to explain why does the electrode positive penetrates deeper than straight polarity.
To my understanding after hearing you say that on a dc current electricity flows from negative to positive. Thanks.
I thought the positive end of a power source was the hot wire..
Love the video
As the live/hot wire carries electrons from – to + terminal ,it seems more likely to have a electric shock from the wire which comes out of – terminal ,although touching wire from + terminal shocks.can you explain why as we have a better understanding about what you teach
I am still using the old UK convention, red is live black is not
Im glad I found this channel. Its keeping me busy while my trade school is closed.
Is it correct that connecting neutral and ground in household
I thought only the Swiss had neutral wires.
Excellent video thank you – very clear
Where is the video link for United Kingdom?
In my country neutral is minus
Hi, lots of helpful information but I have a question. At 5:33 you say that the topic of current returning via the other hot service wire will be covered in more depth in another video. I haven’t been able to find that video. Which one is it?
Your statement about ground wire not used for ground fault contradicts your own explanation in "Single Phase Electricity Explained – wiring diagram energy meter
" video, where you show ground wire directly connected to ground rod which is actually the case in my country.
Super, thank you, liked and subscribed!👍
6:31 The ground conductor is connected to the positive terminal of the battery. If I were to place my multimeter leads across the ground conductor and the hot wire I should read 1.5 Volts. This is because the ground conductor behaves as an extension of the positive terminal of the battery, even though it is not a part of the circuit, which is why current does not flow through it (under normal circumstances) even though it is attached to the battery. Now, if I were to straddle a load between the ground conductor and hot wire, this would result in a flow of current between the ground and hot conductors and (hopefully) trip the GFCI in a residential scenario. Please correct me if I have misspoken.
Excellent video!
People are so fucking smart my god I love humanity
It’s all wizardry to me. I mean whoever discovered AC power is a freaking genius, but this video was also genius in giving a good visual representation. Most of us that work with this type of stuff are visual learners anyway. Show me! lol.
Thank you for this simple and straightforward explination
If I was qualify I wouldn’t be watching this video 😷
Now the hot water tank wiring (2 hots) makes more sense.