Just subscribed Delroy, nice to see a fellow spark working on real jobs in the real world unlike some sparky channels who seem to cherry pick the pretty pretty jobs!! Keep up the Vids pal.
the incoming sub standard cast iron DNO head/cut-out definitely need to be replaced, it will have a rewirable main fuse which is likely to be asbestos mounted
I was amazed to actually see Delroy at Canning town London today, first time i saw someone who does CZcams & actually get to meet them in real life, keep up the good work Spark, iv been a spark for 15 years but its nice to see you helping other engineers out there bless
Another great video! I work a lot with the elderly and social housing, your content is always great and the properties are more like the ones I attend! So as Ali G would say "keep it real"
Very thorough testing of a ropey installation. You're teaching Adil really well. That service head looks as though it has rewirable fuses: the supply authority will almost certainly change it.
6mm bonding conductors are more than adequate on a TNS earthing arrangement, they are required to be no less than half that required of the earthing conductor and no less than 6mm, itâs only where pme conditions apply where table 54.8 is required to size the bonding conductors. You cannot code them for being 6mm if itâs a non pme installation.
K C No it doesnât play a part, the danger of no rcd protection to a lighting circuit does not change because of the age, the risk is still there, itâs either immediately dangerous, potentially dangerous or improvement recommend, 20 years 10 years, 5 years, the risk doesnât change. An installation doesnât have to comply to the latest wiring regulations, thereâs no law that means you have to comply with the latest edition of the wiring regulations, that is why a C3 code exists. All installations that are to an earlier edition do not mean they are unsatisfactory for continued use.
K C Taken from the BPG 4 and guidance note 3. The results of the inspection and testing need to be clearly detailed in a report. Any observed damage, deterioration, defects, dangerous conditions and non-compliances with the requirements of the current edition of BS 7671 that may give rise to danger should be recorded (Regulation 653.2) and appropriately classified for remedial action. It should be borne in mind that, as stated in the introduction to BS 7671, existing installations that have been constructed in accordance with earlier editions of the Standard may not comply with the current edition in every respect, but this does not necessarily mean that they are unsafe for continued use or require upgrading. My own home is 6 years old, it now does not comply to the current edition of bs7671 however it is in a satisfactory condition even with a plastic CU but it does not require to be brought in line to the current edition of bs7671. Installations pre 1966 did not require a cpc to the lighting circuit, this is unacceptable to todayâs safety standards and would always be coded, the edition it was installed to is irrelevant, it may have complied once but it is now unacceptable.
I've noticed some differences between Brittain and America, namely the"fuse/breaker boxes are metal here, also we generally have GFCI outlets where needed but no rcd protective breakers. And at most houses using a ground pole into the dirt instead of at gas line or whatever. And obvious that we have in wall flush outlets mostly, yours appear to be GFCI, or have a switch on them.
It should be noted that on RFC testing, stage 2 is r1+rn. I know in the real world this is not always done but when the young lad goes into assessments it will be expected. Also cpc is 1.67 times greater.
I'm a bit puzzled cos you were testing for Zs on the pendant using one of those kewtech socket adaptors, but you were doing the test between switched live therefore and surely neutral on the other side? Those things can't tell you if it's earthed or not, you have to surely take off the light fitting to find the cpc? If not, I am missing something crucial cos it's the reason I hate doing lighting circuits, I'm always taking all them off and they often break or come off the ceiling if they're stiff! Great video.
I'm old school like yourself got my jib approved but didn't do my testing course wish I had love fault finding like the way you explain to the lad I'm sure I've met you somewhere
The Electrical Safety First Best Practice guide is more accurate and approved by most bodies. There's a lot of errors in Codebreakers which the author has admitted which mean many installations are incorrectly getting unsatisfactory results from someone who can only follow a book and not understand regulations.
I think its dangerous and bad craftsmanship because in the event you cut all power to lighting and open that up and trust the fuseboard and dont re-test at the switch itself youll get electrocuted
Just subscribed Delroy, nice to see a fellow spark working on real jobs in the real world unlike some sparky channels who seem to cherry pick the pretty pretty jobs!! Keep up the Vids pal.
More examples of " Safe Isolation " đ
Cover off , breakers and main isolator On đ
Excellent đ
You can spur to a 13A fused outlet in 1.5mm from the ring circuit. H2.3 Onsite Guide.
Nice to see you taking the time to walk him through and explain what needs doing.
nice1 del looking after the young apprentice and showing him the ropes :) another good watch
the incoming sub standard cast iron DNO head/cut-out definitely need to be replaced, it will have a rewirable main fuse which is likely to be asbestos mounted
Fantastic insight as usual Del. đ„
Great vid Delroy!
I was amazed to actually see Delroy at Canning town London today, first time i saw someone who does CZcams & actually get to meet them in real life, keep up the good work Spark, iv been a spark for 15 years but its nice to see you helping other engineers out there bless
Lucky! Del is an inspiration.
Another great video! I work a lot with the elderly and social housing, your content is always great and the properties are more like the ones I attend! So as Ali G would say "keep it real"
Very thorough testing of a ropey installation. You're teaching Adil really well. That service head looks as though it has rewirable fuses: the supply authority will almost certainly change it.
Great video Del đđŒ
Tanx for the upload plz do some more fault finding videosđ
Delroy and your son do excellent job for your business and customers fare play
6mm bonding conductors are more than adequate on a TNS earthing arrangement, they are required to be no less than half that required of the earthing conductor and no less than 6mm, itâs only where pme conditions apply where table 54.8 is required to size the bonding conductors.
You cannot code them for being 6mm if itâs a non pme installation.
K C No it doesnât play a part, the danger of no rcd protection to a lighting circuit does not change because of the age, the risk is still there, itâs either immediately dangerous, potentially dangerous or improvement recommend, 20 years 10 years, 5 years, the risk doesnât change.
An installation doesnât have to comply to the latest wiring regulations, thereâs no law that means you have to comply with the latest edition of the wiring regulations, that is why a C3 code exists.
All installations that are to an earlier edition do not mean they are unsatisfactory for continued use.
K C Taken from the BPG 4 and guidance note 3. The results of the inspection and testing need to be clearly detailed in a report. Any observed damage, deterioration, defects, dangerous conditions and non-compliances with the requirements of the current edition of BS 7671 that may give rise to danger should be recorded (Regulation 653.2) and appropriately classified for remedial action.
It should be borne in mind that, as stated in the introduction to BS 7671, existing installations that have been constructed in accordance with earlier editions of the Standard may not comply with the current edition in every respect, but this does not necessarily mean that they are unsafe for continued use or require upgrading.
My own home is 6 years old, it now does not comply to the current edition of bs7671 however it is in a satisfactory condition even with a plastic CU but it does not require to be brought in line to the current edition of bs7671.
Installations pre 1966 did not require a cpc to the lighting circuit, this is unacceptable to todayâs safety standards and would always be coded, the edition it was installed to is irrelevant, it may have complied once but it is now unacceptable.
@@ishkebabvery nice .. did the other chap delete his comments đ
I've noticed some differences between Brittain and America, namely the"fuse/breaker boxes are metal here, also we generally have GFCI outlets where needed but no rcd protective breakers. And at most houses using a ground pole into the dirt instead of at gas line or whatever. And obvious that we have in wall flush outlets mostly, yours appear to be GFCI, or have a switch on them.
Yr a sound fella... interesting and thorough
33:20 thats reverse polarity of the L & N, you can check and get the reading by reversing the leads on the tester (obs needs to be fixed)
Your a legend Del brilliant advice
Delroy. đđđ
On 2.5mm twin and earth the CPC resistance is 1.67 x the value of the r1 or rn reading. This is the ratio between 2.5mm and 1.5mm
2.5/1.5 =1.67 i agree
socket circuit code 3 would be 2 if the supply was used out side napit code brakers book is interesting read
It should be noted that on RFC testing, stage 2 is r1+rn. I know in the real world this is not always done but when the young lad goes into assessments it will be expected. Also cpc is 1.67 times greater.
Whatâs wrong with a rcd spur and a bit of silicon in the holes đ€·ââïž
I'm a bit puzzled cos you were testing for Zs on the pendant using one of those kewtech socket adaptors, but you were doing the test between switched live therefore and surely neutral on the other side? Those things can't tell you if it's earthed or not, you have to surely take off the light fitting to find the cpc? If not, I am missing something crucial cos it's the reason I hate doing lighting circuits, I'm always taking all them off and they often break or come off the ceiling if they're stiff! Great video.
Lol I hate testing Zs on lighting circuits. Any time there's pendants I get excited. Or if they loop at the switch Im a happy man lol
You have to croc clip the earth terminal in the fitting and use the kewtech with the L-N leads to get the Zs .
i don't see the problem in using a 1.5 cable fused with a 5amp
I'm old school like yourself got my jib approved but didn't do my testing course wish I had love fault finding like the way you explain to the lad I'm sure I've met you somewhere
Get the napit codebreaker book.đ
Good shout - just got mine last week đ
The Electrical Safety First Best Practice guide is more accurate and approved by most bodies. There's a lot of errors in Codebreakers which the author has admitted which mean many installations are incorrectly getting unsatisfactory results from someone who can only follow a book and not understand regulations.
@@aptsysits just a guide!!!your interpretation of a c2 code could be different to mine đ€·ââïž
Are you taking on any other trainees pal?
Kitchen fitters!
typical kitchen fitter
I think its dangerous and bad craftsmanship because in the event you cut all power to lighting and open that up and trust the fuseboard and dont re-test at the switch itself youll get electrocuted
That's more of a labelling issue, isn't it? Besides, you should always measure before you touch anything, at least in theory!
You must surely mean 'workmanship'?
you are 100 percent better instructor than Raymond webber.
You say that R1+R2 should be lower than ze I find most of my r1r2 readings are always higher than ze.
'big' r1+r2 or 'little' r1+r2? (R1+R2) + Ze = Zs