earthing | Page 7

earthing

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  1. Ben Keer

    Earthing and bonding

    Hi all. Following on from some research into the adiabatic equation, I realised that its ok using it to determine the main earthing size but I couldn't work out whether it gave me a size big enough to also support main bonding from it. The scenario being if I were wanting to run a submain from...
  2. RyanAspire

    New circuit design question

    Hi guys, Have a job on next week for a friend, my usual industry is maintenance so want to be sure I am checking all the boxes here. He intially measured the run out at 122m, which would require a 70mm cable due to volt drop, however its changed slightly and I have other queries... He now...
  3. H

    current leakage to earthing line

    can some one help me with this problem? I have one spike guard which has only neutral and line wires. but the sockets on the spike guard are 3 pin, the problem I am facing is that : I am getting current into my earthing line, I have got shocked many times from chargers, fridge surfaces, etc. I...
  4. S

    Earthing Rods for EV Homecharging

    HI all. I am not an electrician and know only but a few things about it so I want to ask a question . So Chargemaster is supposed to install a home charging unit on my property. Their technician came and said I needed additional electrical work (either an double pole isolation switch or run a...
  5. jmmrly

    UK Outside socket earthing

    Hi, I'm located in the UK and replacing my outside double socket plugs with ener-j smart wifi sockets. I've wired it as the picture below, exactly the same as the old one. I used my tester and it's only earthing one plug. There's another earth socket but I didn't need an earth wire in each one...
  6. J

    UK Sub Main Armouring Earthing Question Combined CPC and Main Bond

    Hi I have reviewed a few posts around this subject, but my question is not covered. I know that the Submain Earth has to be sized on the DNO incomer, not on the submain to the external building itself. My question is if I need two main bonds in the submain building, for example one for ground...
  7. B

    UK Earthing a mechanical coin prepayment meter on a TT

    I'm a rusty 16th edition retired spark. At home I'm aiming to send power to my outbuilding for a couple of lights and one 13A socket. I have a few people that come informally & use my outbuilding to keep & look after their animals. They could do with some light to see by, and maybe the facility...
  8. S

    UK Quick bit of advice about earthing

    Good morning all, first time poster, thanks in advance for any help! I'm planning on relocating a socket on my downstairs circuit about 2ft from its current location. Having taken a look at the socket, it appears the circuit is earthed at this point, the other side of the external wall pictured...
  9. B

    UK Earthing problem

    Hello folks, I have been using a BUZZIT socket Tester around my house today and, I have found that I am getting a fault reading of 'no earth' from it. I have had an extension built a few years ago and a new ring main was installed for that. When I did the check on those sockets they were all...
  10. spud1

    Should internal links in consumer units be double insulated where TT earthing is present

    Hi, So I was reading the notes on regulation 531.3.5.3.2.201 (Page 156) today and noticed Note 1 that consideration should be given (Where TT earthing is present) to the manufacturer's internal line cable links on the supply side of an RCD being insulated AND sheathed! Does anyone know of any...
  11. M

    Earthing system

    Whats this.?.Cable on the left is alluminium, right one is copper. A couple of strands has been taken out from copper neutral and connected to outer pipe of left cable and then to main earth terminal. Is it tns,tncs,tt?,no earth electrode anywhere found
  12. C

    Earthing Table

    How is this earthing table derived and what would it apply to?
  13. B

    UK Summerhouse earthing

    Hi all, I am having a new summerhouse built at the end of my garden circa 50m from house consumer unit. House has TNCS earthing arrangement. I was planning to run a 10mm 2 core SWA cable to the summerhouse and put in an earthing rod and earth direct to that. Someone has just advised to run a 3...
  14. W

    Earthing woodworking machine question

    Hi, I am replacing a “fizzing” start /stop switch on a metal framed woodworking machine , with an NVR switch with emergency stop. The machine itself is mounted on nylon castors which presumably insulate the machine electrically from ground. My question is therefore, where do I attach the earth...
  15. T

    Ze and earthing of static caravan

    I'm doing an EICR on a static caravan after being called on to fix to a couple of problems due to loose connections. It's all fine now within the installation in question but the earthing arrangement on the site is bothering me as it is relying on many multiple connections in steel armour...
  16. P

    Which earthing type is this??

    Been asked by a Friend who’s doing a self build to identify this cut out, he’s not local to me so I can’t visit site to look myself, Looks like tncs/pme to me by the pics but with no labels how can you know for sure if it’s not a TT? I’ve told him to contact ukpn in the meantime..
  17. N

    earthing scheme suitable for worst/large value of soil resistivity in order to get earth resistance value below 5 ohm?

    i don't the exact value of the soil resistivity as no survey of soil sample is carried out at the site .However Copper earthing electrode 50mm diameter of 2.5 m is driven where its circumference were filled with chemical compound power to the height of rod and earth resistance was found to be...
  18. D

    Earthing Type

    Am I right in saying that if there is no earth connection to the suppliers cut out then the earth type is TT? We have just moved into a property and there are currently 3 fuse boxes connected. All have a connection to the met which is not connected to the cut out. One does the majority of the...
  19. J

    UK Type of Earthing System

    Am i right in saying this is a TNC-S earthing arrangement? The supply cable (which looks perished any advice on this welcome) comes from the wall in between the two houses (its a semi-detached). And no sign of it outside wall. So must be fed from underground. But there is a separate stranded...
  20. T

    Earthing for domestic house

    Hi, Please could you help my friend, who is having electrical work done at his house? …The ground wires in his house all go to the consumer unit (main fuse box) and there they connect to the Neutral of the incoming mains power supply. In other words his "earth" is the neutral of the mains...

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