To see subtitles in other languages: Click on the gear symbol under the video, then click on "subtitles." Then select the language (You may need to scroll up and down to see all the languages available). --To change subtitle appearance: Scroll to the top of the language selection window and click "options." In the options window you can, for example, choose a different font color and background color, and set the "background opacity" to 100% to help make the subtitles more readable. --To turn the subtitles "on" or "off" altogether: Click the "CC" button under the video. --If you believe that the translation in the subtitles can be improved, please send me an email.
A friend introduced me to you channel and your videos are so good, complex concepts explained in such a detailed manner. looking forward to more. Thank you
Very informative videos with easily digestible analogies and explanations. Sometimes they're slow, but I'm impressed with the relatively thorough and practical coverage of the topics.
Thanks for the compliment about my videos. I have to keep the pace slow for the people who are being intorduced to these topics for the first time, as they need time to think about each point before moving on to the next one.
Eugene Khutoryansky is the sort of teacher I yearned for at tecnical college. Many of the lecturers I had obviously didn't understand their subject at the fundamental level. They were never able to teach their subject adequately. This presenter doesn't _just_ understand the subject but he also understands the conceptual difficulties in students' learning needs. We are privileged to have such a doyen of physics as a TH-cam presenter.
I love this video so much. It integrates both of my most beloved passions: The music and the electronics. Also I´m in love with that voice. Beautiful and delicious treasure to my ears!!! Thank you so much for this!!!
Three years studying engineer at the best university on my country and I was not still satisfied with what voltage was... best analogy ever thank you so much
I've read several articles about return paths in the last days. However, your animated explanation is the clearest to understand! Thanks Eugene ♥️ PS would be awesome if you would have also animated the proper and the worse (heavily radiating) electromagnetic field for a close and an interrupted return path.
I was looking for information on how grounds really work, which I got. I also got information on some other stuff that has confused me for years. What a great video, thanks for taking the time to make it this good.
Patreon Done! FYI,Your work is worth way more than a $1.00 a month. Thank you so much for your vids. I hope this helps as its all I can do at the moment. However when I can I will kick you back some more $.
The third "ground" hole on a power outlet isn't just a connection to earth ground. It is a connection to the circuit ground, which is also connected to earth ground via a "grounding electrode." This is done to lower the total resistance between the electrical system and the earth, which helps to minimize potentially dangerous voltages from developing between the two due to high current flow from high energy sources (ie lightning). The reason for this third slot is to bond metal enclosures to the circuit ground (via the "equipment grounding conductor"), so in the event that an ungrounded or "hot/live" conductor (that is, relative to earth ground) makes contact with the enclosure, there will be a low resistance path back to the source (circuit ground) which will cause high current to flow and result in the overcurrent protection device (fuse or circuit breaker) opening and turning off the circuit. Without this low resistance path, current can still flow back to the source through the earth ground, possibly using a human body as part of this circuit. The resistance of this "ground fault" path may not be high enough to trigger the OCPD (say, 15A or 20A for a standard household circuit), but may still be low enough to pass lethal current through a person (~100mA).
Because of your videos I wanna be a musician as well as physicist. Your background music choice is very nice. It's name is Gymnopedie no. 1 by Satie, isn't it? Well explained Eugene! Thanks
I just signed up on your Patreon! I'll happily do the $1.00 a month. I still have to go instide to get my credit card though. I'm literally "In the Dog House" testing it out for my Four Dog's. In Magnolia, Tx. My jaw dropped to my suprize when on Patreon listed you in Houston! That is so cool! Another irony is two of my Dogs looked like your white Puppy when they were little. I'll guess you may may be familiar with my breeds, as I have one Kuvaz and One Giant TATRA SHEPPARD☺ both are All white☺
this is a way of explaining why the grounded conductor (neutral) and grounding conductor (equipment ground) are bonded at only one point (service disconnect, or transformer disconnect). Small currents induced as "noise" into circuits can be nearly eliminated by installing an isolated ground, where the devices for sensitive equipment are not bonded to the adjacent metallic system, but run directly to the service ground.
I never thought that I would be one of those patrons.... but your videos are really good I decided to take the plunge. It's not much but I hope it will make a small difference. Thanks for all ... May I ask you how you know all this stuff? :-)
+D0minuZ, thanks. I really appreciate your donations, and thanks for the compliment about my videos. In reply to your question, I learned the material in my videos from a variety of sources. Some of it was through formal education, and some of it was as the result of studying on my own.
yay ! ive been looking for something like this... although the narrarator and the demostration doesnt quite match sometimes , but that could be my ignorance , because i get lost for a second.
You can help translate this video by adding subtitles in other languages. To add a translation, click on the following link: th-cam.com/users/timedtext_video?v=rIhF410L2SU&ref=share You will then be able to add translations for all the subtitles. You will also be able to provide a translation for the title of the video. Please remember to hit the submit button for both the title and for the subtitles, as they are submitted separately. Details about adding translations is available at support.google.com/youtube/answer/6054623?hl=en Thanks.
+Brandon Redmond, thanks for the vote of confidence. The songs are from the free TH-cam audio library, and the names of the songs are "Gymnopedie_no_1" and "Gymnopedie_no_3." Thanks.
+Karan Agarwal, I already discuss transistors, both as switches and as amplifiers, in my video titled "Logic Gates from Transistors." Though, I plan to go into much more detail about transistors in future videos. Thanks.
I became a patron and suggest you do the same if you appreciate this channel's content, kurzgesagt wich publishes inacurate crap make 11 000$ / month in patreon, this excellent channel only 100$ /month, this is ridiculous.
very nice video. I like it. I have a question, what is the title of the song behind this video ? I heard it few years ago but I don't know the title. btw sorry for my English. thanks :D
Not more then One connection between systemground and earthground is important. If you have two connections it can be dangerous in case of break in the systemgroud. In this case flows the hole current in the earthground. In many circuits can the systemground not carry the hole current, the wire can be very hot and begin a fire...
What program do you use to create these wonderful animations? And where does the woman's voice come from? I suggest you include the name of the songs you use in your videos in your descriptions as well! Thank you for such great and informational work. We all appreciate it.
I make my 3D animations with "Poser." The narration is done by Kira Vincent. The songs in this video are "Gymnopedie_no_1" and "Gymnopedie_no_3" from the free TH-cam audio library. Thanks.
Thanks again, I liked it very much. I have three Q's. if I may ask. 1st. As an example an Internet router circuit board, they may have many small shields around (I would guess the oscillators and amplifiers for VHF) are those metals special in any way? some I have are almost gold like on the inside and a silver like polished on the outside.......2nd. Does the shape of the shields affect things and do the shields absorb passing radio waves? ......... I'm so sorry to ask so much but one unrelated Q. that has plauged me for awhile now is (subject : Einstein Relitivity) When we speak in terms of "Observers" and their "reference frames" are we as students to negelect "c" and assume instantaneous information in the thought experiment, Im sure we do just never had clarification.
+Andrew Karpinen, the reason for using gold is because gold is an excellent conductor. But, because gold is expensive, what is typically done is that it is just used as a thin coating on another metal. The shields reflect the incoming electromagnetic waves. The shape of the shield is typically not critical, but in high voltage applications, you typically want to avoid sharp corners, these can cause large electric fields. In reply to the question about relativity, no we can't neglect C, and we can't assume instantaneous information, as the though experiments will not work otherwise.
+Physics Videos by Eugene Khutoryansky Thank you for the answers to my Questions. Also the Dogs said Woof and Bark! When I told them you said Hi. LOL. ....And Yes we (All the Dogs and I) watched the new vid tonight together lol.😃
If you have a switch open or close in the circuit, this will generate a step function, and step functions have high frequency components when represented as a combination of sine waves.
I have no formal education on the matter, I'm just curious. I got allot of info from this thanks to the big, bold, colorful animations which illustrates the definitions that appear. I think the only negative was the piano music in the background was the same piece as what I've heard in at least one Miyazaki film. That's really distracting for a man child like myself.
Can someone explain me why a person standing on a ceramic floor ,above concrete, above earth (all isolating materials) suffer an electrocution if touch a 110 or 220 live cable?
In cable there are several wires inside. There are e.g. live (phase voltage), neutral (return wire) and usually protective earth (earth ground) wires as seen on video. These three wires were wired onto the wall socket at 03:00. This example person in question standing upon more or less insulating floor structure should touch the live wire and the neutral wire (or protective earth wire) simultaneously. However, in some cases electrocution is possible while in contact between neutral and protective earth or earth ground wires (01:30).
3:13 that is not true with the type of outlet shown. Center hole(green wire) is earth ground. One hole (black wire) is a side of the transformer(either side). One hole(white wire) is connected to the center of the transformer winding (not shown) and also goes to earth ground.
Milos Grounding a screen on one end will protect your signal integrity from E fields only. Grounding at both ends forms a closed circuit for induced currents to flow, which protects your interconnect from external H fields too.
Anywhere stray charges can come from, even static electricity. I used to have this problem with products I made that had electrically isolated signal outputs. When fed into the customers differential input data acquisition equipment, it wouldn't always work because is would sometimes allow the common mode output voltage to violate the common mode input range of the measurement equipment. I had to tell them to connect a ground to their instrumentation so often that I finally gave up and started putting large value resistors (100k) between the signal output common and ground. This was enough to maintain isolation more or less, but still provided a path for charges to bleed off to keep the common mode voltage referenced near ground.
![ปฏิเสธไม่ไหว (Crush on you) - LIPTA feat. No One Else [TEASER MV]](http://i.ytimg.com/vi/VC689EgdSIw/mqdefault.jpg)
To see subtitles in other languages: Click on the gear symbol under the video, then click on "subtitles." Then select the language (You may need to scroll up and down to see all the languages available).
--To change subtitle appearance: Scroll to the top of the language selection window and click "options." In the options window you can, for example, choose a different font color and background color, and set the "background opacity" to 100% to help make the subtitles more readable.
--To turn the subtitles "on" or "off" altogether: Click the "CC" button under the video.
--If you believe that the translation in the subtitles can be improved, please send me an email.
R
Yes!
Are you can explain kirchhoff's
I explain Kirchhoff's Laws in my video at th-cam.com/video/m4jzgqZu-4s/w-d-xo.html
@@EugeneKhutoryansky thank you♥️
Is it possible to recommend a channel to understand mathematics?
I'm studying electronic engineering and your videos have been extremely helpful. By far the best physics channel in youtube
+Escutia Richi, thanks for that really great compliment. I am glad that my videos have been helpful.
If you like this video, you can help more people find it in their TH-cam search engine by clicking the like button, and writing a comment.
+Peter Rabitt, thanks for the donations. I really appreciate your support.
A friend introduced me to you channel and your videos are so good, complex concepts explained in such a detailed manner. looking forward to more. Thank you
Thank you so much 😍
Very informative videos with easily digestible analogies and explanations. Sometimes they're slow, but I'm impressed with the relatively thorough and practical coverage of the topics.
Thanks for the compliment about my videos. I have to keep the pace slow for the people who are being intorduced to these topics for the first time, as they need time to think about each point before moving on to the next one.
That was the most helpful video I have seen in a year. Many thanks.
Glad to hear that my video was helpful. Thanks.
this is the best channel on youtube!
+locotche, thanks for that really great compliment.
Eugene Khutoryansky is the sort of teacher I yearned for at tecnical college. Many of the lecturers I had obviously didn't understand their subject at the fundamental level. They were never able to teach their subject adequately. This presenter doesn't _just_ understand the subject but he also understands the conceptual difficulties in students' learning needs.
We are privileged to have such a doyen of physics as a TH-cam presenter.
Thanks for the compliments.
I watch your videos twice.
Once for the beauty..
Once for the knowledge.
Thanks. I am glad you like my videos.
I love this video so much. It integrates both of my most beloved passions: The music and the electronics. Also I´m in love with that voice. Beautiful and delicious treasure to my ears!!! Thank you so much for this!!!
Glad you liked my video. Thanks.
I'm sure you've heard this from a lot of people that are older, like me....I wish I had these videos when I was in high school. Great job!
Thanks. Glad you like my videos.
Three years studying engineer at the best university on my country and I was not still satisfied with what voltage was... best analogy ever thank you so much
voltage = energy/ charge, or Joules/Coulomb
Which college sir ?
@@hariohm1415 the unknown is 'which country' .
I've read several articles about return paths in the last days. However, your animated explanation is the clearest to understand! Thanks Eugene ♥️
PS would be awesome if you would have also animated the proper and the worse (heavily radiating) electromagnetic field for a close and an interrupted return path.
Thanks for the compliment about my explanation.
В последнее время на фоне всего этого безумия для меня ваши видео это психотерапия. Спасибо:)
Your way of teaching is interesting to watch thank you
Thanks.
I was looking for information on how grounds really work, which I got. I also got information on some other stuff that has confused me for years. What a great video, thanks for taking the time to make it this good.
Excellent topics, graphics and narration (with pauses and stresses).
Thanks.
Very good animation video clarifying key points on electrical grounding and shielding.
Thanks for the compliment.
Hi Eugene. Very nice work ! Could you explain antennas please?
Radio waves duh
Another excellent visualisaton, clarifying some important issues in circuit design.
Thanks. Glad you liked my video.
Using Trois Gymnopedies by Satie to accompany a video about electrical grounding is fantastic.
What an amazing explanation and a valuable information .
.I highly appreciate your great effort to make these helpful videos
This helps a lot. Ground is such a bizarre concept when just learning from diagrams.
+uberLejoe, thanks. Glad to hear my video was helpful.
Wow great video. This channel is helping me a lot to crack my competitive exam
Thanks Eugene! for your wonderfull videos... knowledge, illustration, lecturing speed and very nice voice...
Wonderful explanation sr
Why does common terminal of transistor configuration of bjt connect to ground?
Please guide
wonderful! so happy to find this..............
Thanks for another great video. I would love to see a video on fault current.
greate job! your video is always brief and comprehensible.
Thanks. Glad you liked my video.
Exactly what I needed! Keep posting you're doing a great job!
Thanks. More videos are on their way.
Thanks for the video. Ground has a strong influence on ESD tolerance as well. It will be great if there is a video about that too.
Patreon Done! FYI,Your work is worth way more than a $1.00 a month. Thank you so much for your vids. I hope this helps as its all I can do at the moment. However when I can I will kick you back some more $.
+Andrew Karpinen, thanks again for the donation. I am glad that you enjoy my videos, and I really appreciate your support.
There is no better explanation elsewhere, Thanks!
Thanks for the compliment.
Too helpeful !! Congratulations
Glad my video was helpful. Thanks.
your 3d works are wonderful, thanks a lot. keep making more videos.
Nice visualisation
Thanks.
another great video. keep posting my friend, you're good at it!
+Derek Ojeda, thanks for the compliment. I am glad you liked it. Lots more videos are on their way.
You really work hard in creating such video, nice job,
Thanks.
The third "ground" hole on a power outlet isn't just a connection to earth ground. It is a connection to the circuit ground, which is also connected to earth ground via a "grounding electrode." This is done to lower the total resistance between the electrical system and the earth, which helps to minimize potentially dangerous voltages from developing between the two due to high current flow from high energy sources (ie lightning).
The reason for this third slot is to bond metal enclosures to the circuit ground (via the "equipment grounding conductor"), so in the event that an ungrounded or "hot/live" conductor (that is, relative to earth ground) makes contact with the enclosure, there will be a low resistance path back to the source (circuit ground) which will cause high current to flow and result in the overcurrent protection device (fuse or circuit breaker) opening and turning off the circuit. Without this low resistance path, current can still flow back to the source through the earth ground, possibly using a human body as part of this circuit. The resistance of this "ground fault" path may not be high enough to trigger the OCPD (say, 15A or 20A for a standard household circuit), but may still be low enough to pass lethal current through a person (~100mA).
Because of your videos I wanna be a musician as well as physicist. Your background music choice is very nice. It's name is Gymnopedie no. 1 by Satie, isn't it? Well explained Eugene! Thanks
Very beautiful and informative.
Thanks for the compliment.
I just signed up on your Patreon! I'll happily do the $1.00 a month. I still have to go instide to get my credit card though. I'm literally "In the Dog House" testing it out for my Four Dog's. In Magnolia, Tx. My jaw dropped to my suprize when on Patreon listed you in Houston! That is so cool! Another irony is two of my Dogs looked like your white Puppy when they were little. I'll guess you may may be familiar with my breeds, as I have one Kuvaz and One Giant TATRA SHEPPARD☺ both are All white☺
+Andrew Karpinen, thanks for the donations. I really appreciate your support. And please let your dogs know that I said hello to them.
This is valuable information for posterity
+himynamesfather, thanks.
i am in love with this chanel :)
Thanks.
Thanks for the video!
Thanks.
great video, nice graphics...
Thanks.
this channel deserve more subs
Thanks.
this is a way of explaining why the grounded conductor (neutral) and grounding conductor (equipment ground) are bonded at only one point (service disconnect, or transformer disconnect). Small currents induced as "noise" into circuits can be nearly eliminated by installing an isolated ground, where the devices for sensitive equipment are not bonded to the adjacent metallic system, but run directly to the service ground.
Thank you Eugene
You are welcome and thanks.
impressive presentation
Thanks.
Amazing channel! Love the animations they really help visualise :)
Thanks. I am glad you like my animations.
Thanks for your great and creative work. Proving internet can be used for something useful ;)
Best channel. Please do some videos on antennas
Thanks for the compliment. I will add antennas to my list of topics for future videos.
i didnt watch it yet but am about to
am sure its awesome as you always do
thanks in advance
Just congratulations !! Great !!
Thanks. I am glad you liked my video.
thank you!
these videos is very good.
Thanks. I am glad you like my videos.
Really Great job..
Beautiful, thank you
I never thought that I would be one of those patrons.... but your videos are really good I decided to take the plunge. It's not much but I hope it will make a small difference. Thanks for all ... May I ask you how you know all this stuff? :-)
+D0minuZ, thanks. I really appreciate your donations, and thanks for the compliment about my videos. In reply to your question, I learned the material in my videos from a variety of sources. Some of it was through formal education, and some of it was as the result of studying on my own.
yay ! ive been looking for something like this... although the narrarator and the demostration doesnt quite match sometimes , but that could be my ignorance , because i get lost for a second.
Nice explanation. thanks
+shivani choudhary, Glad you liked it.
You can help translate this video by adding subtitles in other languages. To add a translation, click on the following link:
th-cam.com/users/timedtext_video?v=rIhF410L2SU&ref=share
You will then be able to add translations for all the subtitles. You will also be able to provide a translation for the title of the video. Please remember to hit the submit button for both the title and for the subtitles, as they are submitted separately.
Details about adding translations is available at
support.google.com/youtube/answer/6054623?hl=en
Thanks.
Well done, thanks
Thanks for the compliment
Very nice
I just liked it before watching it. That is the confidence I have in this video. By the way, what song is this?
+Brandon Redmond, thanks for the vote of confidence. The songs are from the free TH-cam audio library, and the names of the songs are "Gymnopedie_no_1" and "Gymnopedie_no_3." Thanks.
Brandon Redmond same here
Amazing, thank you so much
tres belle musique tres bien ficelé
Wonderful.
Thanks.
Hello, really Amazing Chanel , now i folllow your Chanel at Time.thank's
Thanks. I am glad you like my videos.
really awesome video as always. are transistors in your upcomig videonlist?, pls let me know
and eugene by transistor I mean transistors as amplifiers, Derek from veritasium have already done one on transistor as a switch
+Karan Agarwal, I already discuss transistors, both as switches and as amplifiers, in my video titled "Logic Gates from Transistors." Though, I plan to go into much more detail about transistors in future videos. Thanks.
+Physics Videos by Eugene Khutoryansky ohk and thank you very mch
The arrows changing polarity looks like visual trickery😂
Super! Nice job! Tnx!
Beautiful
+Yousaf Almani-CR7, thanks. Glad you liked it.
Wonderful !!!
Excellent
Thank you so much 😍😍😍🥰🥰
We just watched this in class and the music put me to sleep 😂😂😂😂
good job
+Rakshit Kulkarni, thanks.
I became a patron and suggest you do the same if you appreciate this channel's content, kurzgesagt wich publishes inacurate crap make 11 000$ / month in patreon, this excellent channel only 100$ /month, this is ridiculous.
+romteb, thanks for donating, and for encouraging others to do the same. I really appreciate it.
Inaccurate crap?
could you point out some of those inacurate crap?
I live in a third world country + I'm student. Once both statements are false, I'll support this channel.
very nice video. I like it. I have a question, what is the title of the song behind this video ? I heard it few years ago but I don't know the title. btw sorry for my English. thanks :D
Gymnopedie 3
What such a beauty ..
Thanks.
really helpful
Thanks. Glad to hear that.
Could you share how to shield cable from power interference and earthing for same
Not more then One connection between systemground and earthground is important. If you have two connections it can be dangerous in case of break in the systemgroud. In this case flows the hole current in the earthground. In many circuits can the systemground not carry the hole current, the wire can be very hot and begin a fire...
What program do you use to create these wonderful animations? And where does the woman's voice come from? I suggest you include the name of the songs you use in your videos in your descriptions as well! Thank you for such great and informational work. We all appreciate it.
I make my 3D animations with "Poser." The narration is done by Kira Vincent. The songs in this video are "Gymnopedie_no_1" and "Gymnopedie_no_3" from the free TH-cam audio library. Thanks.
Thanks again, I liked it very much. I have three Q's. if I may ask. 1st. As an example an Internet router circuit board, they may have many small shields around (I would guess the oscillators and amplifiers for VHF) are those metals special in any way? some I have are almost gold like on the inside and a silver like polished on the outside.......2nd. Does the shape of the shields affect things and do the shields absorb passing radio waves? ......... I'm so sorry to ask so much but one unrelated Q. that has plauged me for awhile now is (subject : Einstein Relitivity) When we speak in terms of "Observers" and their "reference frames" are we as students to negelect "c" and assume instantaneous information in the thought experiment, Im sure we do just never had clarification.
+Andrew Karpinen, the reason for using gold is because gold is an excellent conductor. But, because gold is expensive, what is typically done is that it is just used as a thin coating on another metal. The shields reflect the incoming electromagnetic waves. The shape of the shield is typically not critical, but in high voltage applications, you typically want to avoid sharp corners, these can cause large electric fields. In reply to the question about relativity, no we can't neglect C, and we can't assume instantaneous information, as the though experiments will not work otherwise.
+Physics Videos by Eugene Khutoryansky Thank you for the answers to my Questions. Also the Dogs said Woof and Bark! When I told them you said Hi. LOL. ....And Yes we (All the Dogs and I) watched the new vid tonight together lol.😃
Fox's Law: Gymnopédie No.1 + Knowledge = Like
+Mr Fox, glad you liked my video, and the choice of music. :)
Since the circuit is operating at DC (0 Hz), what would be the frequency of the electromagnetic waves generated by the loops?
If you have a switch open or close in the circuit, this will generate a step function, and step functions have high frequency components when represented as a combination of sine waves.
So will it be an array of different waves at varying frequencies and amplitudes, harmonics per se?
I have no formal education on the matter, I'm just curious. I got allot of info from this thanks to the big, bold, colorful animations which illustrates the definitions that appear. I think the only negative was the piano music in the background was the same piece as what I've heard in at least one Miyazaki film. That's really distracting for a man child like myself.
Hi
There is no charge at ground.
So ground potential is zero.
Is this statement true?
No, we arbitrarily pick a place to call zero, as described in the video.
Can someone explain me why a person standing on a ceramic floor ,above concrete, above earth (all isolating materials) suffer an electrocution if touch a 110 or 220 live cable?
In cable there are several wires inside. There are e.g. live (phase voltage), neutral (return wire) and usually protective earth (earth ground) wires as seen on video. These three wires were wired onto the wall socket at 03:00. This example person in question standing upon more or less insulating floor structure should touch the live wire and the neutral wire (or protective earth wire) simultaneously. However, in some cases electrocution is possible while in contact between neutral and protective earth or earth ground wires (01:30).
@@jkinkamo , a person can be electrocutated only touching live wire and the floor.
thank u
Youre rly good
No one:
The sockets at 3:01 :😱😱
Lovely
3:13 that is not true with the type of outlet shown. Center hole(green wire) is earth ground. One hole (black wire) is a side of the transformer(either side). One hole(white wire) is connected to the center of the transformer winding (not shown) and also goes to earth ground.
great!
Thanks.
VERY good!!
For me the music in the background is a total distraction. Too bad.
So do I ground the shield at both ends or not?
The big question still remains.
No, you should tie to ground at only one point, so as to avoid creating ground loops.
For both VFD and sensor cable?
I often see in documentation that shield for VFD should be ground at both ends.
Milos Grounding a screen on one end will protect your signal integrity from E fields only. Grounding at both ends forms a closed circuit for induced currents to flow, which protects your interconnect from external H fields too.
it was very help full
but it wasn't very clear that how the extremely voltage difference through the transformer came from
Anywhere stray charges can come from, even static electricity. I used to have this problem with products I made that had electrically isolated signal outputs. When fed into the customers differential input data acquisition equipment, it wouldn't always work because is would sometimes allow the common mode output voltage to violate the common mode input range of the measurement equipment. I had to tell them to connect a ground to their instrumentation so often that I finally gave up and started putting large value resistors (100k) between the signal output common and ground. This was enough to maintain isolation more or less, but still provided a path for charges to bleed off to keep the common mode voltage referenced near ground.
so if you remove the Earth Ground in your explanation we effectively have an automotive context where ground is the chassis.