So if there is a fault on my central heating system the RCD will trip before electric can travel through my radiators and the MCB will trip once the fault has travelled back through the earth connected to the bottom of my radiator and back to the fuse box. I've just changed my radiator in the bathroom and out of 4-5 plumbers only 1 ask do I have a RCD fuse in my fuse, yes I do, ok you don't need the earth wire connected to your radiator then. And this is because of the reaction time of the RCD to break current.
@kevinsisley45084 күн бұрын
Thanks for the excellent video. Could you please suggest which brand of box you used / is the best suited to be fitted into a lath and plaster wall. Many thanks again.
@JPElectricКүн бұрын
Hi Kevin, I don't have a preferred brand really. The important thing is the depth of the box so you you have the depth for the lugs
@maysasaeed79646 күн бұрын
I cant understand ....in the house it show earth cable connect neutral with the MET? Can you explain for TNCS
@JPElectricКүн бұрын
Hi. The neutral is at the star point of the transformer. This is 'referenced' to earth. The supply earth is connected to this. They are commoned together on the supply side sometimes, as in a TNCS and separated in the installation. or as in a TNS the earth is ran separately. This is the supply side, we don't do this on the consumer side.
@malachygallagher49369 күн бұрын
That was excellent as usual Thanks mg.
@JPElectricКүн бұрын
Thanks very much
@maysasaeed796411 күн бұрын
شكرا فعلا استفدت
@freezefoot12 күн бұрын
Good clarification . Thank you.
@JPElectricКүн бұрын
Thank you freezefoot
@maysasaeed796414 күн бұрын
شكرا من السودان
@Manzana32916 күн бұрын
Excellent video, amazing tips. Thank you so much for creating this and sharing all your knowledge ❤
@euanwylie804619 күн бұрын
very informative and accurate, i dont know why we dont write down the value of ohm we get and where to compare the result to, like u said jst 0.05, as we get bigger sites, these numbers dont calculate, the adibiatic has been done for thermal constraints, but was i an acceptable value of negligible resistance between esposed and extraenous. On paper it says continuity tickbox and verification tickbox, what is an acceptable value still. or does this no become touch voltage problem which designers will never be able to calculate before hand.
@euanwylie804619 күн бұрын
great explanation and great work, gives me better understanding now it about main bond calc i will see in ur next vid
@alanevans107320 күн бұрын
without a doubt the best instructional video on Zs testing i've seen, & the rest of the videos JPElectrical are equally as brilliant....thank you for posting these videos!
@JPElectricКүн бұрын
Thank you Alan that really kind of you to say
@ghostcatcher7530Ай бұрын
Thank you very much you deserve millions views 👍
@JPElectric22 күн бұрын
Thanks very much ghostcatcher7530, I'm a few of that total😀
@nixy1756Ай бұрын
great explanation thank you!
@JPElectric22 күн бұрын
Thank you nixy1756
@adriancrabb6345Ай бұрын
Great videos and really well explained.. quick question.. in App 4 6.2, the mV/A/m should be multiplied by the PF of the load or is this already covered by applying the PF for Ib?
@simba2860Ай бұрын
Excellent video.. very well explained… thank you!
@JPElectric22 күн бұрын
Thanks vey much simba2860 please you found it useful
@hylawillis8572Ай бұрын
how to use the mta in new york
@KelvinNjoroge-vl6ypАй бұрын
Wow
@maxximumbАй бұрын
Thanks for the video. I have to relocate a socket my dad installed 20 years ago. Your video shows me everything I was unsure about and a plan B in case the plaster is in a worse state than I hope it is.
@Pakistan_zinda_baadАй бұрын
Well explained 👏
@MS-Patriot2Ай бұрын
Thanks, it’s tricky to find these summaries with all the different standards and codes out there.
@yashodharashende2668Ай бұрын
Maybe it's just 😮😢❤😂 dim
@yashodharashende2668Ай бұрын
🎉😅
@yashodharashende2668Ай бұрын
No yours yes off yesterday
@jamesheartney9546Ай бұрын
Don't ever want to own a lath and plaster house. Sheesh! Thanks!
@stevespoor6567Ай бұрын
Thank you 🙏
@shivambatra8210Ай бұрын
Well explained
@JPElectricАй бұрын
Thanks very much
@JPElectricАй бұрын
Thanks for watching
@Brynben12 ай бұрын
Superb, thank you
@JPElectricАй бұрын
Please you found it useful, thanks for watching
@OulChap2 ай бұрын
This is excellent work you've done here. Much appreciated.
@JPElectricАй бұрын
Thanks for watching OulChap
@danielteyehuago16332 ай бұрын
I'm here again
@nickgilbert38952 ай бұрын
One of the best instructional video's I've watched,wish this could of been around 35+ years ago!!
@JPElectricАй бұрын
Thank you Nick for the nice comment
@brianoneill3502 ай бұрын
Great video as usut
@JShamaal2 ай бұрын
Hi, What is thos App that you use to draw this circuit? Thanks
@JPElectricАй бұрын
Hi JShamaal, I use Adobe Illustrator for all my videos.
@danielteyehuago16332 ай бұрын
Wow! Love it thanks for sharing this with us
@mb-electricalservices2 ай бұрын
I use software to carry out design calculations which is incredibly accurate and great for my clients as a full report can be sent confirming all calculations meet the requirements. The problem with this method is that, as an electrician, you become lazy and lose the ability to manually do the calculations. You've given me a bit of food for thought here because it's clear to me that I have become reliant on software. Thanks for the video. Great stuff for learners and old sparkies like myself. 💪
@angelofranklin1Ай бұрын
Software is great until the computer breaks down
@JPElectricАй бұрын
Thanks very much for watching. I do like to work out with a pen and paper, then I use software to confirm my working out, and visa versa.
@mb-electricalservicesАй бұрын
@@angelofranklin1 Very true!! Fair point...
@mb-electricalservicesАй бұрын
@@JPElectric You're welcome bud. 👍
@cfgman12 ай бұрын
Informative video thank you
@JPElectric2 ай бұрын
Thank you cfgman1
@eltranjbar68372 ай бұрын
Great 👍
@JPElectric2 ай бұрын
Thank you
@selvoselvo12 ай бұрын
Very interesting, basically the tester would show 0 voltage between neutral and earth, the same reading as normal, but here are both live..
@JPElectric2 ай бұрын
Thank you selvoselvo1. Voltage detectors detect a difference in potential. If you have not got one, they can show no voltage. Some voltage detectors will give an indication that voltage has been detected.
@operationbonjovi2 ай бұрын
How did you recess the box into the plaster, to prepare for a flush wall?
@JPElectric2 ай бұрын
Hi operationbonjovi.. I just trimmed a bit of the plaster away so the lip of the box was not proud of the wall.
@danielteyehuago16332 ай бұрын
Please apart from MFT, which instrument can be use to measure the cable resistance
@danielteyehuago16332 ай бұрын
This is a top notch video
@mactheman87972 ай бұрын
I found this helpful beyond words... Thank you :)
@JPElectric2 ай бұрын
Thank you Mac the man
@cfgman12 ай бұрын
This is the only video which clearly makes the distinction between the purpose of CPC and PBC respectively - one limits the duration of the fault and the other limits the level of the fault. This is a very important concept which is quite difficult to grasp but once understood makes sense. I must admit these videos are impressive - I suspect you have taught this subject ...if not you should !
@JPElectric2 ай бұрын
Thank you cfgman1, No not a teacher, just an electrician, trying to pass stuff on.
@cfgman12 ай бұрын
Wow thats very dangerous well done for noting that .
@alexparker40992 ай бұрын
Spent hours trying to sort this. Thank you so much best video on the subject.
@JPElectric2 ай бұрын
Thank you Alex
@danielteyehuago16333 ай бұрын
Please apart from this MFT instrument, which other instrument can be use to determine the resistance value of a cable for for a distance of 1m
@danielteyehuago16333 ай бұрын
Please apart from this MFT instrument, which other instrument can be use to determine the resistance value of a cable for for a distance of 1m
@danielteyehuago16333 ай бұрын
Please can you refer me to where can watch the video on this information. Thanks
@balsamomahmoudian32793 ай бұрын
correction: time 21:21
@balsamomahmoudian32793 ай бұрын
That's a wonderful video, well done. One point, at the time 48:15, Ib=13.04 needs to be used instead of In=16, then correct Vd is 13.23v