Ground Rod Explained

I thought ground wire protects from electrocution as currents prefers to travel into the ground instead of human body(more resistance)? Am I correct?

NEC say’s don’t bond the neutral to ground at the panel and the transformer. Only in one location to prevent parallel current paths. Diagram should remove horizontal bonding bar and place neutral conductor on left terminal bar and call that the neutral bar.

Current will take all paths back to the source, and it will take him proportionately to the to the resistance applied. This is important to know because he could still get shocked on those higher resistance, contact points simple Ohm’s Law E/R = l

A rcbo breaker will trip with 30ma of current

Do UK houses have a grounding rod?

Having just re-installed a new meter base and added a exterior 200 amp breaker panel to meet current NEC code due to a faulty meter that seemed hell bent on setting the side of my house on fire, they will make you install (2) 5/8 x 8ft ground electrodes at least 6 ft apart and the #4 ground wire is to be installed in one continuous run into the main service panel for low impedance purposes. Don't forget your antioxidant paste for the 4/0 & 2/0 aluminum cables 😉

My house was built from scratch during the late 70's so things have changed a bit code wise since then like separating the neutrals and grounds on their own bus bars. Honestly, I don't really see the point of that since the neutral and grounding (safety neutral) wires are linked to the center-tap of the transformer. It looks a little neater, that's all I can say.

I was on generator power for 11 days waiting for the parts to arrive for the install. Wasn't going to let some local electrician price gouge me for $500 - $1,000 to install something that took less than a day.

Passed my electrical inspection with ease which cost me $125 which wasn't to bad considering.

I also now have a spare meter box and breaker panel in my shop just in case something like this ever happens again so I'm able to strip the guts out of the old box and make the repair in less than an hour 😊

As for the grounding rods, most people don't know that for the most part they are really for lightning and static build-up. Now the exception to this is a fence charger which electrifies fence and when touched finds it's way back to the charger via a grounding rod. The more grounding electrodes you install the more powerful a shock they can deliver which is what keeps livestock from escaping 😜

While a lightening strike is absolutely made much more manageable and safer by ground rods ,there is another vital function of ground rods taking place continuously and is arguably equally as important. Grounding maintains an equipotential between structures and power lines as a counter to induced voltage from power lines AND from neutral/center tap drift created by unbalanced loads. This second function of a good inter-system ground is worth explaining too. That was an excellent explanation. I might also add that in tight rural and city areas the multiple paths to ground can be of such low impedance (metal sewer and water systems and several other possibilities) that the returning neutral current will split and be shared between the neutral service conductor and the building/neighborhood total ground paths. I have measured it and it is actually very common for a significant amount of Return/Neutral Current to use an excellent groundpath back to the Utility Source.

Thank you

so how to test if its safe to touch a grounding wire that could be potentially energized?

I took down the old barn at the farm, a couple of the pure copper lightning rods had the tips melted

Please explain how lighting returns to its source, ostensibly the Earth, rather than the Sun as itts source.

Questions: my system is DIY. Where are you attaching the ground wire and rod to? My area suffers a lot of lightning. A strike a couple of years ago flipped the circuit breaker, but to no avail, and damaged more things than I could afford to replace. These rods are rare in Australia.

Ground wire as protection wire

Everything fall to the ground

I just realized a lighting strike is just a big arc between the clouds and the earth's soil...mind blown

Howdy. Nice explanation.
However. Less is discussed about the purpose of the soil rod.
The main purpose is to provide a reference null potential. This null potential is then distributed to plumbing, appliances, concrete rebars and so on via the ground wiring (green). Potential equalizing of touchable parts.
Observe that the reference null is not soil null during a ground fault in an appliance. The soil impedance will cause the reference null to rise above the global soil null. But the environment of utilization potential will rise alongside the reference null through bonding. The fault touch voltage between the faulting aplliance and the concrete floor will be smaller.
So. The rod reference null is not heavily bonded to the global soil null. The best way to provide reference null is not to use just one rod. Use several rods around the house. This will encircle the environment of utilization for best fault potential equalizaton. Better still. Bury a copper wire around the house and connect both ends to the service panel bonding.
Regards.

For the minds like mine that aren’t scientific, concepts like this are extremely complicated. Huge shout out of appreciation to those of you who are STEM.

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The comments run the gamut, some contradicting the video, many contradicting each other, and in general leaving the layman confused and hesitant to believe any side of it. Surely there must be a solid truth behind ground rods somewhere.

what if there was no neutral ground wouldnt your misconception about people be wrong?

I have said this very thing to licensed electricians and electrical engineers and they all said I was stupid and didn't know what I was talking about. I tried to tell them a ground does not make something less likely to electrocute you. I didn't argue with them because they were idiots.and weren't willing to listen to facts. They all insisted that electricity follows the least path of resistance to ground. They were unwilling to accept that electricity fallows all paths not just the path of least resistance. Tell most electricians that current flows from the source and returns to the source and they will provide their resume and experience to try and prove you wrong. You just can't argue with stupid people.

Thanks for the info.. now i know why everytime that a lightening is happening here in the farm.. the wire that connected to the ground rod is a having a sparks...

How about at the sea? How to implement grounding at the sea?

Interesting and very informative.

This diagram depicts a TNCS system (Terra Neutral Combined Separate Supply), and the main reason for the ground rod, is to prevent injury when there's a loss of neutral between the meter and supply transformer.

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Shame this was US based, as obviously there’s different earthing systems. This resembles a TT system so the ‘ground’ like in this video connected to the neutral bar is not the case. Sure, resistance is high in the ground but with say 100ohms Ze and 30mA RCD, you’ll be able to trip it. In fact, 30mA @ 230v gives you 1667ohms to play with technically.

neutral is connected to PE ???

The explanation on why thunders electricity goes to ground was weird

Would be great if you did some ship specific electrical engineering videos like insulated neutral earthing and distribution systems

This channel is brilliant ! thank you for your hard work and help, I am currently binging them all

So this ground wire is supposed to help you not get electrcuted from a ground fault on an appliance with a "3rd" prong, but it can kill you at the same time. From the diagram in the video, there are two ground spikes next to the house. If for some reason, you touch an appliance and it has a power fault and its touching the chassis, and its during an electrical storm, the current will go through the ground spike, split off in parallel from your body and the 3rd prong wire and back to ground. Since your body has less resistance then earth ground (assuming the skin effect), some of it will go through your body and kill you instantly. Why is there not a fused connection on the ground spike?

Will lightning come into my bed mat from outside grounding rod is my simple question??🤯

what kind of rod is ground rod? is it metal?

👍 & SUBSCRIBED. Very educational, thank you!

When I was a kid I ran and tripped over a metal wire that was tied to a tree and a grounding pole of a mobile home. I flew in the air and hit the ground it seemed like I was knocked out before I hit the ground. My question is was it likely that electrical current was flowing through the wire? Was curious as to whether electricity or the fall possibly knocked me out.

Do all buildings have this???

here

why would we need ground rods in places like california where there are never any lightning strikes?

Why is the black hot leg wire at the lamp socket not connected / landed on the socket base terminal as is now shown in the video? Why is the socket's base ground wire shown in yellow instead of green per USA NEC Code?

Do u mean the ground cable and neutral cable are linked/connected at a point?

Is it Ok to Use Metal Pipe as a Ground Rod?

Just watching that make me a certified...

I second the motion! Nice job on explaining the practical application of a ground rod. True that so many uneducated individuals falsely think it provides and kind of protection against ground faults.Neutral bonding so that electrical currents can get back to the source is the proper means of clearing a fault by allowing the short to trip a breaker.

Is chrome is okei for grounding rod? i have no grounding rod

Is there any danger in walking around the ground rod while the "discharge" event happens?

Lightning strikes in the primary or HV will not be discharged in the neutral grounded. Best protection is a surge arresters

Current will flow MORE to the path of least impedance. Kirchoffs current law. Therefore earth is a parallel path to the source and just like static electricity, connection to earth makes the grounded conductor equipotential to the earth.

To verify, check what happens on a single line to ground fault on an UNGROUNDED SYSTEM first with EGC connected to earth and not connected to earth.