Nice to see you are making videos again. You are the best ... please help me prepare for my inspection and testing exams with some videos...thanks. And again...you are the best
hankyou for the video, really good. Do you disconnect all other earths from the MET when performing this test and just test from the main earth? Or keep everything connected?
Hi, great video, Could you please explain what the Ib would be in that equatian when the installation being tested is of an older edition and protected by a bs3036 rewirable fuse as it's protective device. Thanks
There is outdoor low voltage installed within touch range to a metal fence installed in the ground. How do I ascertain if the fence needs to be bonded?
Hi, do you know much about shaver sockets / isolating transformers? I’m just trying to understand at college we've been told that voltage flows when there's a different potential as you say. But how do you not get a shock touching a live part from a shaver socket if you're other hand is touching a tap. But you would get a shock if you touch a live in a switch while you're stood on ground or touching a tap?
Is there a meaningful risk in an equipotential zone with diverted neutral currents due to a broken pen conductor. Both upstream or downstream? How best to avoid the currents circulating around pipe work and the incoming supply?
Thanks for the video, well explained. I have studied this as an adult learner and was never convinced that I fully understood the logic behind the 22 kΩ especially when I found..."a resistance to earth of less than 1667 Ω then sufficient current will flow (through the person to earth) to trip the RCD so they should be OK. - No need to bond. Max touch voltage should be less than 50 V, so with a 30 mA RCD 50/0.03 = 1667Ω. This led me to think that anything below 1667 Ω or above 22 KΩ doesn't need bonding - is that correct?
Thanks for exelent vid, just a thought should we consider Cmin in the calculation in relation to the 230 volts for worse case scenario when calculating Rcp.
Wow! This is video very informative and the best tutorial on the topic for me so far. I really appreciate it. Thanks for sharing it with us.
Good to see you back.Thanks for the video.Look forward to live demos.
Hi Freezefoot. Hopefully get something up soon
Thank you. Really useful content.
Thanks for watching and commenting @THECARKUS
Hi Sir, I really appreciate your videos, they are amazing.
Hi Ramzi. Thanks so much
Great description & animation 👍
Thank you Openminded Guy
Great content
Nice to see you are making videos again. You are the best ... please help me prepare for my inspection and testing exams with some videos...thanks. And again...you are the best
Thanks very much Fairisfair. Yes Im back to making videos , and will get some more up ASAP.
hankyou for the video, really good.
Do you disconnect all other earths from the MET when performing this test and just test from the main earth? Or keep everything connected?
Hi, great video,
Could you please explain what the Ib would be in that equatian when the installation being tested is of an older edition and protected by a bs3036 rewirable fuse as it's protective device.
Thanks
There is outdoor low voltage installed within touch range to a metal fence installed in the ground. How do I ascertain if the fence needs to be bonded?
Hi, do you know much about shaver sockets / isolating transformers? I’m just trying to understand at college we've been told that voltage flows when there's a different potential as you say. But how do you not get a shock touching a live part from a shaver socket if you're other hand is touching a tap. But you would get a shock if you touch a live in a switch while you're stood on ground or touching a tap?
Is there a meaningful risk in an equipotential zone with diverted neutral currents due to a broken pen conductor. Both upstream or downstream? How best to avoid the currents circulating around pipe work and the incoming supply?
Thanks for the video, well explained. I have studied this as an adult learner and was never convinced that I fully understood the logic behind the 22 kΩ especially when I found..."a resistance to earth of less than 1667 Ω then sufficient current will flow (through the person to earth) to trip the RCD so they should be OK. - No need to bond. Max touch voltage should be less than 50 V, so with a 30 mA RCD 50/0.03 = 1667Ω. This led me to think that anything below 1667 Ω or above 22 KΩ doesn't need bonding - is that correct?
Hi GrumpyGrampa, Thanks for the comment.
Thats right, If you get readings between 1666Ω and 22KΩ then you have to put in
supplementary / main bonding.
Thanks for exelent vid, just a thought should we consider Cmin in the calculation in relation to the 230 volts for worse case scenario when calculating Rcp.
Thanks for the comment. I am working on a cmin - cmax video at the moment. Hope to have it up soon.
Do you need to remove parallel paths?
Please have you an email address