Earth Electrodes Part 2 - Installing, Loop Impedance Testing

Installing an earth rod with cover, then testing it using the loop impedance method.

► Support this channel:

► Social Media:

► Contact info, sending stuff in: etc.:

► Website - More on this video and many other subjects

[Cjrelectrical]

Enjoyed that John would love more videos like this. Thank you for taking the time to create the content.

[clivequinn]

Didn't realise that J.W. had legs.

[blakegriffin]

Won't doing this cause random rods appearing from the ground for people in Australia?

[koffibanan]

Thanks for taking the time to do this! Enjoying this series! In Belgium, the earth electrode (everything is TT in Belgium) should really be <30 ohms, else a lot of other measures have to be taken.

[stewben]

Another excellent Video by the great JW. The best.

[kram]

I have just installed an earth rod and wanted to test it. To do this I used a 100 watt light bulb a volt meter and a current clamp. 100 watt bulb across live & neutral measured 229 V & 0.425 A (volts x amps = watts 97.33) so then worked out resistance of circuit (volts divided by amps = resistance) say 539 ohms. Then did 100 watt bulb across live and earth rod measured 234 V and 0.416 A (volts x amps = watts 97.34) so then worked out resistance of circuit (volts divided by amps = resistance) say 563 ohms
. So extra resistance in circuit caused by the path through the earth = 24 ohms.

[James_Bowie]

I'd call that timber a mowing edge, thus quite functional.

[Bodragon]

(1:10) - You just can't beat that high-voltage sage.
It's simply got quite the unique flavour.
I'm definitely installing an earth rod in my herb garden.
Just to see if it affects the flavour of my other herbs.
There is a distinct zinginess to the Rosemary that comes from my friend's high voltage herb garden.
Can't wait to try out the same on my own.
All the best and way to go !
>

[tincanpete]

Your videos are always so clear in their explanations and really, really helpful. Thank you, very much!

[dglcomputers]

Try installing a rod like that on Portland, you'd probably need to drill a hole first given the amount of stone there.

[goldfish]

So in the UK, do most homes rely on an earth rod as shown in the vid? Secondly, does the consumer unit not have a earth conductor that traces back to the supplier/council ?

[unkleoo]

Rookie mistake installing box before electrode.

(1) dig hole a bit big and test for fit of box

(2) install electrode

(3) put box over top and backfill.

Reason being it's easier to hammer down without smashing the box - and if earth really hard and you miss with lump / sledge hammer you again don't smash the box.- plus if you decide it needs to go somewhere else to get a better reading again it's easier to work without smashing the box.

[robertgaines-tulsa]

I would be interested in knowing how this compares to grounding rod installations in the United States. Electrical code differs from state to state though. Our electrical installation is 50 years old. The top of the grounding rod is exposed about 4 inches above the surface where the ground wire is clamped and enters into the electric meter. There is no containing box, and there is just one rod. The rod should be 8 to 10 feet deep. Communication grounding for telephone, cable, and satellite is clamped to the ground wire as necessary for electrical code.

[UnrealVideoDuke]

50 meters of copper wire ~ 1/2 Ohm or less depending on gauge.

[Richardincancale]

2:40 I hope you installed a small ladder to allow the wood louse to escape - I think it would have a tough time scrabbling up the plastic sides :-)

[zazugee]

funny thing, tonight i put the rod next to a sage plant like you did, and i just saw your vid and was like "did he put a rod next to a sage plant too!!?" xd

[rmbo]

Great, thorough and easy to chew explanation. Thanks for the upload, looking forward to next one!

[williamredfern]

WHEN CATS FART THEY STINK AWFULL BUT YOU CAN NEVER HEAR THEM DO IT

[muzikman]

Cracking video JW you never mentioned to null the 50m test wire to the earth rod before measuring the impedance, but you did mention it was around 1 ohm later on. Looking forward to the 3 wire method 😊

[sumilidero]

usually need to stack 6+ electrodes to get about 30 ohms