You are a master educator David. Would you consider covering fault finding or investigation of earth leakage, where the tails are clamped and measured. I'm sure your insight would be greatly appreciated.
I most definitely will, my earth leakage clamp meter was left back in Dubai, but I plan on getting a replacement soon and will create content on this subject as soon as I do :)
Great video many thanks in the early stages of becoming an electrician and was wondering how would you set about a fuse board replacement on a domestic property,would you do a ecr first pointing out any areas of the installation that require correcting and would the ecr be chargeable, or give a costing to replace the fuse board but point out that any of the existing installation that is found to need correcting would be classed as separate work and document this if the customer does not want it carried out straight away thanks for your response sparky ninja
Hello marky marks and thanks for the question. 'ideally' we would carry out an EICR ahead to keep the customer as informed as possible, but most of the time that immediately makes you more expensive than the other guy that'll just bash it out. Depending on the age of the install, and visible quality of the work you may be able to inform the customer enough that they accept that recommendation. The important thing is to always keep the customer informed. One important area is where you introduce RCD protection to an installation that currently doesn't have it. You may have a customer with a 15 year old trusty washing machine that has always worked - suddenly you introduce this 'safety device' which tells her she now needs to save to buy a new one. An EICR wouldn't have raised these issues either as they only exist when the equipment is under load. But if you inform the customer of what the device is, and what it does (in laymans terms) then they are normally happy. I myself often carry an inline plug-in RCD which the customer can plug their old appliances into for a test-run prior to having the work started, also I check the incoming tails with an earth leakage meter to see if there are any straying currents down to earth before I introduce earth leakage protection to the installation. These are all just good indicators to the customer that there maybe be a couple of issues afterwards. With more experience working in homes of differing sizes and age, you will develop an instinct as to when the job will go smoothly or where your gonna have fun. On installing the new board an entire installation test will be needed for the commissioning and so any areas raised there - such as low IR readings - just need to be reported to the customer in a set priority that they can work with. All of those works will be chargeable as they are outside the scope of your installation. Never say to the customer - 'this is the fixed price and I will leave your installation safe', you never know what can of worms you may open on the inspection. Good luck with your training and let me know if I can help in any way. David SparkyNinja
Hi you know all of your videos are very useful but I am a little confused you know the numbers 4.7 which book is it in because GN3 this is not matching the book that's why I am asking.
In the IET on site guide an example of a C3 Observation is "earth leakage circuit-breaker installed at origin of TT installation" can you elaborate on this?
Hi David another couple of questions if possible on changing a consumer unit if the twin and earth tails are going to be to short for the new board what would you recommend for jointing to extend the tails ,also the college tutor of the record said if there are no Henley blocks or a double pole isolater the best option is to pull the service head , I have looked on several forums about this and some sparkys say it can be a nightmare and dangerous so best to call the local distributor and have the double pole isolater installed first appreciate your thoughts on this
Hi, If there is no double pole isolator there then our only source of isolation is removal of the service fuse. Now we are not technically allowed to play with that as it is on the supply side of the meter and is therefore the property of the electricity supplier. You'll most often notice that these are sealed. This is why you are seeing on the online community suggestions to contact the local distributor - who are supposed to install a form of isolation, but they rarely do. Now I would be lying if I was to say that I have never removed a service fuse without permission to isolate an electricity supply when changing a consumer unit. When I worked for a local authority as the QS I actually obtained permission from the supply authority to remove the seals and we replaced them with yellow plastic ones and compiled a database of serial number and addresses for them. It may be worth having a read of this thread to see the common attitude towards it: www.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=43361&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear If I was replacing a board and may meter tails were too short, I would initially look towards replacing them, if that is not an option then a service/henley block will do - but do try to avoid what might be considered as unnecessary connections. Regards David (SparkyNinja)
Hello. I would like to ask for the TT and TN-S earthing system where both have been fitted with the RCD at the Consumer Board. After testing the functionality of the RCD by using the RCD tester that prove the RCD functionality, is it still MANDATORY to test the earth loop impedance ?
Outcome 5 requires the practical delivery, I haven't yet had the onsite opportunity to record something while testing effectively. I'm trying to avoid doing Outcome 5 on a test rig as people prefer on site videos. If never comes up suitable to record on site soon then I will do an Outcome 5 video from the test rigs anyway.
Passed me practical today with help from this fella keep up the good work
Looking foward to outcome 5
Hi ninja. Some brilliant hints and tips there mate. I will definitely take them onboard! Cheers once again.
Links
Thank you Ninja, invaluable tips and insights 👏👏
Sitting my 2392-5 the start of nov and these have been so helpful thanks
You are a master educator David. Would you consider covering fault finding or investigation of earth leakage, where the tails are clamped and measured. I'm sure your insight would be greatly appreciated.
I most definitely will, my earth leakage clamp meter was left back in Dubai, but I plan on getting a replacement soon and will create content on this subject as soon as I do :)
Appreciated your help mate thanks a lot
Hi Ninja. Great videos! Did you end up doing a video to support the practical exam?
Massive help - thankyou
Thanks. Very well explained.
Great video many thanks in the early stages of becoming an electrician and was wondering how would you set about a fuse board replacement on a domestic property,would you do a ecr first pointing out any areas of the installation that require correcting and would the ecr be chargeable, or give a costing to replace the fuse board but point out that any of the existing installation that is found to need correcting would be classed as separate work and document this if the customer does not want it carried out straight away thanks for your response sparky ninja
Hello marky marks and thanks for the question.
'ideally' we would carry out an EICR ahead to keep the customer as informed as possible, but most of the time that immediately makes you more expensive than the other guy that'll just bash it out.
Depending on the age of the install, and visible quality of the work you may be able to inform the customer enough that they accept that recommendation. The important thing is to always keep the customer informed.
One important area is where you introduce RCD protection to an installation that currently doesn't have it. You may have a customer with a 15 year old trusty washing machine that has always worked - suddenly you introduce this 'safety device' which tells her she now needs to save to buy a new one. An EICR wouldn't have raised these issues either as they only exist when the equipment is under load. But if you inform the customer of what the device is, and what it does (in laymans terms) then they are normally happy.
I myself often carry an inline plug-in RCD which the customer can plug their old appliances into for a test-run prior to having the work started, also I check the incoming tails with an earth leakage meter to see if there are any straying currents down to earth before I introduce earth leakage protection to the installation. These are all just good indicators to the customer that there maybe be a couple of issues afterwards.
With more experience working in homes of differing sizes and age, you will develop an instinct as to when the job will go smoothly or where your gonna have fun.
On installing the new board an entire installation test will be needed for the commissioning and so any areas raised there - such as low IR readings - just need to be reported to the customer in a set priority that they can work with. All of those works will be chargeable as they are outside the scope of your installation.
Never say to the customer - 'this is the fixed price and I will leave your installation safe', you never know what can of worms you may open on the inspection.
Good luck with your training and let me know if I can help in any way.
David
SparkyNinja
Many thanks for the reply David there is so much to squash into the hard drive so you know the best way to get the job done properly
Thanks for that very useful
Hi you know all of your videos are very useful but I am a little confused you know the numbers 4.7 which book is it in because GN3 this is not matching the book that's why I am asking.
Hi,
I'm struggling to find the outcome 5 video, could you share the link please?
In the IET on site guide an example of a C3 Observation is "earth leakage circuit-breaker installed at origin of TT installation" can you elaborate on this?
Hi David another couple of questions if possible on changing a consumer unit if the twin and earth tails are going to be to short for the new board what would you recommend for jointing to extend the tails ,also the college tutor of the record said if there are no Henley blocks or a double pole isolater the best option is to pull the service head , I have looked on several forums about this and some sparkys say it can be a nightmare and dangerous so best to call the local distributor and have the double pole isolater installed first appreciate your thoughts on this
Hi,
If there is no double pole isolator there then our only source of isolation is removal of the service fuse. Now we are not technically allowed to play with that as it is on the supply side of the meter and is therefore the property of the electricity supplier. You'll most often notice that these are sealed. This is why you are seeing on the online community suggestions to contact the local distributor - who are supposed to install a form of isolation, but they rarely do.
Now I would be lying if I was to say that I have never removed a service fuse without permission to isolate an electricity supply when changing a consumer unit.
When I worked for a local authority as the QS I actually obtained permission from the supply authority to remove the seals and we replaced them with yellow plastic ones and compiled a database of serial number and addresses for them.
It may be worth having a read of this thread to see the common attitude towards it: www.theiet.org/forums/forum/messageview.cfm?catid=205&threadid=43361&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear
If I was replacing a board and may meter tails were too short, I would initially look towards replacing them, if that is not an option then a service/henley block will do - but do try to avoid what might be considered as unnecessary connections.
Regards
David
(SparkyNinja)
SparkyNinja z
Hello. I would like to ask for the TT and TN-S earthing system where both have been fitted with the RCD at the Consumer Board. After testing the functionality of the RCD by using the RCD tester that prove the RCD functionality, is it still MANDATORY to test the earth loop impedance ?
The is the where the supply start from then live neutral come to consumer unit hope ninja will answer that as well
Hey SparkyNinja
When's outcome 5 coming out?
Outcome 5 requires the practical delivery, I haven't yet had the onsite opportunity to record something while testing effectively. I'm trying to avoid doing Outcome 5 on a test rig as people prefer on site videos. If never comes up suitable to record on site soon then I will do an Outcome 5 video from the test rigs anyway.
How can I become a domestic installer that can test and certify my own wiring job
Hello Sherko, what previous experience/training do you have?