Electric Safety Presentation

Rodney Sherman gives a safety presentation at Holy Cross Energy.

[@lukebaehr3851]

I remember seeing this demonstration when I was a little kid at the fair in Auburn California. Every year, they had this setup at the fair, and I always went to watch it with my mom and dad.

[@ordanicu3305]

At the age of 23 I am shocked looking at this. In all my school years I did not have a physics professor that teaches this properly. Just words and formulas without any visual examples. God have mercy on us because we are dumber than a rock.

[@mg42sd]

My left ear feels safer now!

[@yellankivijaykumar7535]

If I had a master like him, the imagination and understanding of the topic might have been better. The confidence in his eyes is outstanding.

[@TheZombiesAreComing]

Very nice demonstration, lots of useful information and actually showing what happens really helps the knowledge sink in more than simply telling. Something I'd really like to know is all the mechanics involved when a path is created from wall outlets to a body of water (such as the infamous hair drier and the bathtub)

[@newjargon1697]

Very good presentation, and a great enthusiasm. Thank you!

[@Aerox90]

A tip for those who watch this using headphones on an Android: Go to settings -> Accessability -> Hearing -> Enable "Mono-sound"! Now you'll have sound in both ears! 😉👍 (Just don't forget to disable it again later, otherwise everything will sound terrible! xD)

[@cathiejones5446]

This is a great presentation, lots of easy to understand explanations. The visuals just make it better. Well done!

[@usnva5638]

I thought he used an excessive amount of non-layman terms, but he probably had to because there was no simpler way to explain what he was talking about.

[@Samirtouf]

A thing similiar to these exemples happened to some teens i used to know, lthey were like 11 and 14. they had problems with their family so they were always sleeping outdoor. one time they slept next to a light pole, around 2am it starts raining, the light pole had wire touching the ground it electrocuted them one of them lost a leg and his genetalia.

[@chrisreynolds6331]

Very entertaining and informative I have subscribed to your channel. Although I’m in the UK, similar principles apply and these things are well worth learning.

[@sparkyobrian6417]

very interesting , Im an electrician and the same age to the day as Mr Sherman, good presentation too

[@robsonlucena2358]

Great Lectures and demonstrations. Thank you!

[@SkyWire88]

It seems like this guy has been away from teaching and giving lectures for some time. This is an interesting and important subject .

[@electricianwisbech3933]

this answered a lot of electrical safety questions I had

[@kodfkdleepd2876]

Conductors do not have more electrons. They are not ions. They simply have weekly bounded electrons which allows them to move around more easily and share electrons with neighboring atoms. This allows electrons to flow.

[@ITILII]

Very good presentation except for a very basic error at the beginning: 186,000 miles per second is much more than 5 times around the Earth; it's almost 7.5 times

[@lawtonsegler1923]

Outstanding presentation!

[@truthseeker1328]

Electrical current doesn't just "go to ground". Electrical current goes to ground as a path back to its source.

[@bitTorrenter]

But when you say ground, you don't actually mean the earth beneath our feet. That could confuse some. Only fault current would be heading there as far as I remember.

[@truthseeker1328]

@@bitTorrenter Yes, the earth i.e. soil, is conductive albeit it varies depending on moisture level, mineral content and type. And to your point, the fault current during a ground fault, (but only for grounded systems), will use the earth/soil as a return path back to its source. In most cases the fault current will be adequate to trip the over current protection device but not always. For example, when storms knock down distribution power poles it doesn't always trip out. Sometimes the wires remain energized and won't trip out the protective relaying even when it's laying on wet soil. This develops a very dangerous condition called "step potential" due to the existence of voltage gradients in the soil surrounding the point where the energized wire is making contact with the ground. If your left foot is at one voltage potential and your right foot is at another voltage potential, then electrical current will flow from one foot to the other using your legs and body as the conductor. As you know, electric current only flows when there's a difference of potential. On a side note, my original comment was in regards to this instructor stating "all electricity wants to do is get to ground" as if the earth "ground" is some kind of huge sponge for generated electric current @4:03.

[@victoryvictorious633]

This is an awesome presentation. I didn’t have this at my schools. Kind of glad. I would have been traumatized. Have you ever been in a horror movie, good sir? No, but seriously best presentation.

[@robertlowe8032]

Presentation is brilliant...

[@romellod.o.n3745]

I love this vid n i just start watching ...

[@victoryvictorious633]

Best presentation ever

[@sakthicon]

Wonderful. Very educative.

[@fmusicede7384]

Thanks!

[@Ebvardh]

Jesus Christ, how terrifying. I’ll try to become an electrician 😂

[@vankhanhdoan6781]

Be careful 😂

[@pau_6524]

If you are next to a tree. Only one foot touches the ground and a lighting strikes in the tree...Do you feel it? You are like one resistor with one end not connected, no electricity can flow...is it correct?

[@LuigiCotocea]

I had lightning strike above me striking a tree 500m at the edge of the town! Extremely loud!

[@chaseunkownmission2654]

Question: for the example of the fallen cable on the house and car. Should you remain in the house and call 911?

[@chrishayes5755]

awesome job!

[@jhenFranzVLOGz]

Great video.

[@tomdave42]

I love the demonstration model and it's awesome and I wish more presentations had something like this I know our power companies have demonstration Riggs but this is better

[@paulb4496]

The ground is just the PATH BACK TO THE SOURCE. MIKE HOLT TRAINING VIDEOS.

[@JD-vj4er]

Sure seems there sure are a lot of accidents in Holy Cross😆 Great presentation

[@DeputatKaktus]

Safety should always be verified, never assumed. This is true for firearms as well as electricity.

[@G1ZQCArtwork]

I have never been able to find Aloominum on the periodic table, there is however a Metal called Aluminium which is a very common metal....

[@bitTorrenter]

Aluminium can be found in alloys, however as its own metal is an element on its own.

[@raymondgarafano8604]

buss bars not a place where bus drivers like Ralph Kramden ( Jackie Gleason & honeymooners ). seems to me that phase to phase on a 7200 volt line would be close to 12,500 volts.

[@TwstedTV]

I seen another video where they said that the "Overhead Transformers" are 7,000-volts that gets fed 70,000-volts from the generator. Basically - Generator creates electricity 70,000-volts which feeds the Overhead Transformers 7,000-volts, which then feeds to houses in the area with 120-volts and 240-volts. So my question is, were does the 14,400-volts comes from ? Since many other videos are saying its 7,000-volts. Im a bit confused by that. 🤷‍♂️

[@anthonyh4529]

Transformers are known as either step up or step down, the one to your home is a step down, so by hooking your generator reverses the feed causing it to become a step up causing a back feed. The distribution line is at 7200 x 2 becomes 14400. Some are also 13200 on and so on so whichever your electric company voltage is using back feeding produces a step up to what it is manufactured for stepping down. The transformer is stepping down to 122.5 or 125, however it has two phases and that’s how you get 250-220. We can bank more than one transformer and raise the voltage causing either a three phase used in industrial voltages.

[@Tristtix]

They step up the voltage with step up transformers to overcome as much resistance in the transmission lines as possible so they can have less heat loss then they step it down again to your average wooden transmission lines than the power from the low power transmission lines is converted into 240v for the average Canadian or American home to consume

[@blaisenuthak]

wow well done brother!

[@raymondgarafano8604]

I think it is also due to severe nerve damage. the mind works the nerves, which work the muscles. if the nerves are damaged, they can't work the muscles.

[@raymondgarafano8604]

the neutral is the centertap to make 120/240. pull 60 amps on line1 and 10 amps on line2 50 amps on the neutral. the neutral gets broke and 120 across the break with 50 amps . . . glad I'm not there.

[@rogerd4559]

Wait... so those dimensions wouldnt add up if the earth was flat?

[@pcbroch]

What do you mean IF the earth was flat???

[@theemcshop7721]

Great video, plus you sound like Robert DeNiro.

[@bitTorrenter]

You talkin' to me?

[@richardjenkins2993]

Great presentation. Do you have an email address?

[@jaxrules2892]

“Theses are non-conductive gloves that you cannot buy and cannot get” Me: *buys a pair online for $500*

[@mattlogue1300]

Am I Insane? I swear return is ground, literally. Three phases and ground.

[@raymondgarafano8604]

we don't make a profit, BUT we get to keep the kite!.

[@paulb4496]

Electricity wants to go back to the SOURCE...THROUGH THE GROUND.

[@h7opolo]

2:28 hah he's wrong. earth's latitudinal circumference is about 68km longer than the longitudinal circumference.

[@modboss7861]

5:16

[@radwizard]

Where is the DeLorean?

[@bremensname6057]

come on Dave

[@danzieg4]

Every time there is an accident or a horrifying story of death/dismemberment Rodney asks, "Cool?" Nah man, not cool...

[@paulb4496]

Electricity wants to go back to the source NOT TO GROUND. The power company might use the ground as a path back to the source.

[@CornellEvans1]

So why she isn't getting electrocuted while sitting in the car? Is that because the car has its own grounding? Can anyone explain to me please?

[@tahoe829]

Because the car has become a Faraday cage anything inside electricity wont go through only can travel around outside the cage..so passengers are safe inside. Same effect a special conductive suit that aerial linemen use to conduct high voltage with hundreds of thousands of volts running around their body but not through them while they are literally on top of the lines working on them..

[@CornellEvans1]

@@tahoe829 thanks 🙏

[@MadMetalShop]

He needs to be more specific and clear on what he means. There's a bunch of stuff here that how it was explained still wasn't 100 clear.

[@bitTorrenter]

Bucket truck = Cherry Picker😁

[@VoidHalo]

You seem to have gotten a number of things wrong in this lecture. For one, your explanation of electricity just wanting to get to ground. Another being that conductors somehow have more electrons than protons, which would make them ions. And to say some have up to 400 times more electrons just makes absolutely no sense. I don't know where you got that figure from, but the most electrons in any atom known is 118. Now, electrons DO flow through metals, but that has more to do with the valence shells and how the atoms bond with one another.

[@evolvedparasite321]

@Mister Brookes Do you understand how grounding works? You are basically causing a short circuit. Huge amounts of current flow while the rest of the normal circuit drops in current.

[@tigreytigrey8537]

This has since been replaced by gender binary proper pronoun studies.