earthing | Page 3

earthing

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  1. Ericsson

    Can I remove gas earthing?

    We had our gas disconnected last week and the meter removed. We need to start removing the redundant gas pipes in inside the property. There is earthing connected to the main gas pipe 1 meter after it enters the property. Can we go ahead and remove all the redundant gas pipes including the...
  2. E

    Earthing Arrangements

    Minimum requirements for earthing a steel framed shed? 4x3m As3000 once again giving conflicting advice.. Incoming submain 6mm TPS 2 Core plus earth. Incoming earth with 6mm is 2.5mm. Section 5 of As3000 states that because my incoming is 6mm my earth to shed can be 2.5mm. However, minimum...
  3. K

    Earthing gas pipe warehouse

    Hi guys I am working in a warehouse where there is an inactive gas pipe and disconnected gas meter. The DB which has been upgraded now is on the other side of the warehouse. My question is does the pipe need to be bonded? Incoming metal gas pipe I believe is 28mm. Distance from that pipe to DB...
  4. Msitekkie

    Earthing the base of a metal standard lamp

    I have been asked to rewire an antique metal standard lamp. It has been rewired previously, but not earthed..! One of the screws on the base has a short length of uninsulated wire attached, presumably from the original earthing. Unfortunately there is insufficient space to run an extra earth...
  5. driverJohn

    TT earthing enquiry.

    Hi do tt earth systems highly require a rcd, and if not are upfront rcds a must in the tt earthing systems? Cheers
  6. HappyHippyDad

    Moving on to earthing and bonding at the farm!

    This thread is in relation to the job at the farm I am thinking of taking on (3 phase thread). At present the farm is all PME. I believe it needs to be TT'd as they have now brought 2 x goats in to the main barn (no other animals anywhere). In addition they have some feed for the goats and also...
  7. B

    No sign of Earthing...?

    Good morning... been called out to replace a DB on this domestic supply... no earth noticed and only bonding is 6mm from the incoming water supply... Any advice as to how to document this would be greatly appreciated.. would like to get certification correct without any guess...
  8. Q

    Substation Earthing Arrangment

    Hi All, I have a question trying to understand earthing arrangments SO, We have a DNO Substation, 4 Core armoured Feeding the Distribution Board Fed from an Auxillary Transformer (Clients) The DNO Substation has an Earthtape around the substation, which connects to the earthmat of the entire...
  9. M

    Earthing bar from MET on TNS

    Has anyone seen one of these please ? I propose a little earthing tape to identify it. I am upgrading the system and will put in place a new MET and signage. It looks like it could handle high amps on a fault. Should it therefore be deemed a pass on 3.5 of schedule of inspection ? Ps : backboard...
  10. bigspark17

    Solar metal roof earthing

    Hi all. Installing some panels on a shed roof (trapezoid) just wondering your thoughts on earthing the roof. The roof sits on the wooden structure of the building. What should i do with earthing? 1- earth bond the roof back to garage cu 2- earth bond to a local earth rod 3- no earthing
  11. O

    EV chargers and TN-C-S supply earthing general hassle

    Trying to understand why car chargers attract this earthing ballache. from what I learnt it's all about the rare times a Neutral / PEN conductor gets broken in a TN-C-S or thesedays most TN-S supplies. 1) If the PEN gets disconnected in the street, N and CPC become live making the car >70v...
  12. A

    Site Temps earthing question

    Hi Currently on a job at a hospital where we are installing temporary site supplies to canteen toilet block and office. The supply is Tncs from hospital but the hospital electrician and contractor doesn’t want us to install earth rods in case of services below ground and they’re not prepared to...
  13. newfutile

    Type of earthing system

    This states a SNE system, do I list this as a TN-S system. The heads look the same as the PME types. Our NICEIC area engineer was also not sure about this!
  14. richardg

    Solar PV earthing earth rod or main earthing terminal in house

    Hi installing my first solar PV on my own home before starting the courses next year and need some advice on earthing PV. System 6kw solar PV - 2 strings Solis Rhi inverter 20Kwh pure energy battery’s The solis inverter has its own TT system to run as a floating neutral when in UPS mode which...
  15. C

    Solar Panels Barn Earthing for Solar, 80 Meters from Cut Out

    I’m installing 20KW of Solar on my Barn roof, The barn is fed from a 3 phase supply originating at the house which is 80 meters away. I’ll be installing some 35mm 4 core to minimise the losses to <1% volt drop between the barn and the point of supply located at the house. The Earthing at the...
  16. HappyHippyDad

    portable generators and earthing?

    A customer has asked me to install a generator to supply her house for when they have a power cut. I have already said this is beyond my capability and I will definitely not be taking the job. However, I'm interested in understanding it a little better. So you have the correct size live and...
  17. Peter55

    Earthing question - three phase into main building, then single phase to EV charger

    Hi there, new to the forum and in final stages of completing C&G level 3; need to complete design project to complete. Am struggling to get my head around how to draw up correct circuit diagram showing EF Loop path for EV charger where initial supply is described as 'three phase TNCS' feeding to...
  18. Jaqqqqqq

    Earthing rod garden moving

    Hello experts. I have a black cable running from the loft , up the garden, under the garden. Can I move the rod to a different part of the garden? The plug attached works and would be helpful to use. Any advice would be great thank you. UK.
  19. t01474

    Which Earthing type is this?

    What kind of earthing system do you think this is? Strikes me as TNS (Paper lead incommer) but the earth coming out of the head makes it look like TNCS??? But then again the earth is on the lead sheath too??? I was only there to have a look today so didn’t do a Ze. Strikes me as an odd way to go...
  20. impish15

    UK Black cable off supplier's incoming cable?

    Hi, Any suggestions what this black cable is coming off the supply's incoming cable? Its a TN-S system, I thought it could be the earth conductor but the cable is black not green/yellow, plus it looks much smaller than 10mm2 plus there is already an earthing conductor coming off the sheath...

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