earth

earth

  1. D

    UK Swa as main earth ?!?

    So I have turned up on a job… someone previously has installed a 120mm 2 core swa from the meter to a barn building 160m away and them split off for the house and barn building in 25mm tails and have used the armour on the swa as the main earth. Both ends of the swa have been terminated badly...
  2. holmestm

    Should the armour of an SWA carrying twin and earth cables also be earthed (with banjos etc)

    I have an existing installation extended in 2015. The existing cable had 3 cores and used the armour as earth, with connections soldered onto the SWA gland where required (e.g. in external sockets). At the point the extension was added the contractor took the armoured earth and connected it to...
  3. greenruss22

    UK WT Henley series 4 cutout

    Hi there, I recently had a home rewiring and the electrician spotted we had no earth. It's an old house and it was never added by previous owners. He installed a WT Henley series 4 cutout device for the time being as it was a more cost effective solution. He's wired it up and now the property...
  4. L

    Earth bars interconnected hager

    Hello, Just wondering, can two separate earth bars in a consumer unit be interconnected with a 10mm earth cable, or is it necessary to create an entirely new earth bond? Also, what are the pros and cons of each option? Many thanks in advance.
  5. J

    UK Main Earth and Gas Bond

    Folks need advice. House I am working on. TT earthing. The rod is closer to the gas pipe/meter box than the Consumer Unit. I wondered why I could find no bonding conductor in the CU. It appears someone took the Main Earth 16mm cable from the earth rod to the gas pipe and then onto the Consumer...
  6. A

    How to identify presence of an earth electrode

    Hello to all you fine folk out there. I have a question regarding earth electrodes. I've had two periodic inspections/EICRS recently, where I haven't been able to locate the earth electrode. I am guessing they are installed but have possibly been covered over by new patio extensions and other...
  7. J

    Metrel Earth Electrode test - current injector clamp and measure clamp - can i use on domestics TTs?

    Hi Have to say Meterel not been very helpful here. Has anyone any experience of using the current clamps on domestics where you cannot get your current and voltage stakes in the ground near the property? I have a project where it is TNCS, in very rural area prone to loss of Neutral. I have...
  8. H

    UK Earth bonding to Water

    Greetings, I am homeowner and looking to confirm if I will need earth boding to water pipes. There is already earth boding near Gas meter and the gas copper pipe enters the house. Water main supply is via blue plastic pipe (MDPE) which then connects to plastic pipes and also some copper pipes...
  9. P

    Earth resistivity testing in wet ground

    Hi. The question is..... can saturated ground affect earth resistivity testing equipment? Some days there's an unacceptable earth reading, another day it'll be perfect. The only variable seems to be the weather - ie very wet. I've asked northern powergrid to convert to a PME system but they say...
  10. R

    5 amp earth leakage?

    Hi all Suggestions please. I’m working on a 3 phase shop install with a bunch of typical circuits. As each cct is energised the earth leakage rises to around 5 amps! It’s a PME supply via SWA with main earth coming from the armour. I’m pretty sure it’s not the individual ccts or appliances...
  11. S

    EICR in Flat - cross-connected circuits, T&E tails, composite earth

    I'm practising EICRs on friendly locations as I'm still in training - technically done my 2391-52 but frankly need loads more practise. I've just done an EICR on a flat and a few things that I didn't know how to code/address came up: 1) How do you code (and look for) inter-connected circuits? I...
  12. S

    Lots of earth leakage from ovens

    Hi all, There's 2 single fan ovens in the house my mother recently moved into. Posh elecronic AEG units. It's been sat empty for a year, so the oven elements will have had a chance to accumulate some moisture. There's a dual RCD consumer unit, the ovens are on separate RCDs. One of the ovens...
  13. S

    UK Amtech/Trimble - Excessive Earth Loop Impedance on SWA cables

    Hi All, I'm new to Amtech/Trimble and I've been asked to review a model. I'm looking at circuits that are SWA cables using the armour and an internal conductor as the CPC. There are various earth loop impedance errors listed where the Zs at the load end is too high, but what I can tell, Amtech...
    • Steve W
    • Thread
    • cables cpc earth earth fault loop impedance impedance loop loop impedance swa
    • Replies: 4
    • Forum: UK Electrical Forum
  14. qwea44

    Switched earth to relay?

    Hello folks, So my van got found after being stolen ;D Now I'm installing my own alarm on the van which is triggered when a door is opened. Im stuck with this though; for the open door trigger i need a 12v when the door is opened (Or 12v when door is closed) I attached the switched earth cable...
  15. P

    Should this fitting be bonded to earth

    I have had these lights installed by a contractor whose work is normally very good. He has not connected the earth in each fitting as there is a class 2 sticker on the metal back plate. He argues that it does not need to be earthed. The manufacture did not supply a bolt for the Earth terminal...
  16. E

    Smart Switch without Earth Terminal

    Hi, I've bought a "yagusmart" smart switch from Amazon and it has no earth terminal. Although there are no metal facing parts I would think the device itself still needs an earth? Or if not, where do I put the earth cable? It is a plastic back box with no earth terminal. There is no indication...
  17. HappyHippyDad

    Why on earth is this happening?

    A friend's partner has an interesting fault, if it is a fault. She sets the shut down timer on the cooker and when the timer goes off (which in turn stops the oven from working), the TV screen in the other room turns black. This happened perhaps 2 times out 10 when trying to re-enact it. The...
  18. MaintenanceSpark

    Three Core & Earth

    Silly question I'm sure, but I'll ask anyway. On a 2 way lighting circuit the black and grey conductors get sleeved brown to show they're line conductors and I'd like to know why as black and grey are line conductor colours anyway so surely if the grey isn't sleeved blue it's a line and if the...
  19. K

    No flex earth only fly earth in metal light fitting

    Hi, I do basic electrical DIY like changing light fittings and have got a light to put up that only has a fly earth and no flex earth (see pic). I’ll be buying a junction box but just wondering why I’ve no flex earth? Do I just use the fly in the junction box alone? TIA
  20. T

    Is there any advantage to installing a ground rod instead of the combined earth to neutral in my CU

    Hello All I was pondering an idea recently regarding the ground connection to my property. At present it has a combined Neutral to earth at the point it enters the building from overhead cables and immediately prior to the meter the earth from the CU joins what looks like a Henley type block...

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