L
lloyd1980
Hi all
Had a bit of an unusual one today and would like some advice please.
Did some work in a property, tested it and the system on first inspection looks like a TNCS
with the earth combined with the neutral at the cut out.
now here comes the unusual bit, at the bottom of the drive (big house) where the supply comes down off the pole there is a BS1361 cut out in a make shift brick housing with no door open to the elements, the cable feeding the house is just supplied from the top of the 'garden' cut out.
NICEIC inspection today and that was one of the houses I took him to, The ZE when i tested it at the board for certification was 0.34 so just under.
Tested it today with NIC man there and it came back at 0.45.
He then starts jumping up and down, take him to 'garden' cut out and he nearly has a heart attack.
Scot power manweb happen to be out in st. He collars them and TBH they were less than interested and told him to call head office.
NIC guys seems to think orig builder has been given the manweb quote to run cable through garden 100m to house, it would have been a lot of money and has told them to drop supply at edge of premesis, then got his spark to run the cable to feed the house and dabbed it into the 'garden' cut out.
At the moment the earth is shared with the neutral all the way back to the transformer and is showing at o.45 ohms
manweb have supplied a cable to garden cut out which is TNS with a clamp around the armour
manweb would allow 0.8 as TNS, where do I stand?????????
NICEIC guy is talking about earth rods if theres no earth at the pole and then none of the MCB's tripping due to high impedance so therefore needing RCBO's and complete change of dis -boards
I told the homeowner of all this today and he basically kicked off at me saying its been fine up to now , then asking me to tell him exactly what difference it makes to him if his daughter puts her finger in a socket, he knows he has an earth as its reading 0.45
if it was connected to armoured you would be allowed 0.8
I was on spot and couldnt give him a def answer as surley the RCBO/MCBS would still trip
What is the exact threat this poses to him????
If anyone can give me the answer id be gratefull , spent hours trawling through 7671 with no joy, the cust obviously thinks im trying to stretch the job and would just like to give him a definative answer.
very frustrating day all in all
Had a bit of an unusual one today and would like some advice please.
Did some work in a property, tested it and the system on first inspection looks like a TNCS
with the earth combined with the neutral at the cut out.
now here comes the unusual bit, at the bottom of the drive (big house) where the supply comes down off the pole there is a BS1361 cut out in a make shift brick housing with no door open to the elements, the cable feeding the house is just supplied from the top of the 'garden' cut out.
NICEIC inspection today and that was one of the houses I took him to, The ZE when i tested it at the board for certification was 0.34 so just under.
Tested it today with NIC man there and it came back at 0.45.
He then starts jumping up and down, take him to 'garden' cut out and he nearly has a heart attack.
Scot power manweb happen to be out in st. He collars them and TBH they were less than interested and told him to call head office.
NIC guys seems to think orig builder has been given the manweb quote to run cable through garden 100m to house, it would have been a lot of money and has told them to drop supply at edge of premesis, then got his spark to run the cable to feed the house and dabbed it into the 'garden' cut out.
At the moment the earth is shared with the neutral all the way back to the transformer and is showing at o.45 ohms
manweb have supplied a cable to garden cut out which is TNS with a clamp around the armour
manweb would allow 0.8 as TNS, where do I stand?????????
NICEIC guy is talking about earth rods if theres no earth at the pole and then none of the MCB's tripping due to high impedance so therefore needing RCBO's and complete change of dis -boards
I told the homeowner of all this today and he basically kicked off at me saying its been fine up to now , then asking me to tell him exactly what difference it makes to him if his daughter puts her finger in a socket, he knows he has an earth as its reading 0.45
if it was connected to armoured you would be allowed 0.8
I was on spot and couldnt give him a def answer as surley the RCBO/MCBS would still trip
What is the exact threat this poses to him????
If anyone can give me the answer id be gratefull , spent hours trawling through 7671 with no joy, the cust obviously thinks im trying to stretch the job and would just like to give him a definative answer.
very frustrating day all in all
