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earth

  1. S

    TN-C-S earth and Island mode inverter

    I am installing a Victron Quattro in an island mode configuration (in the UK, the DNO is the NG). I will be adding a stand-by generator. My property has a standard TN-C-S (PME) earth arrangement. I am an electrical engineer (testing) not an electrician. The regs state the DNO earth cannot be...
  2. T

    size of earth on 16mm mains tails

    Hi I have a domestic installation to rewire and the main incoming fuse is 80 amp so i am using 16mm double insulated tails, is the main earth size with this 16mm or 10mm ? Thanks
  3. Y

    Alternative retro fit earth tag options for SWA?

    I'm working on a system that has been installed incorrectly. It's a 3ph Hager board with 8 swa cables glanded into the bottom entry panel. The install is fine except the earth tag (banjos) haven't been fitted and they have relied on the metal plate as an earth. My question is, can you get a...
  4. Cankeredlamentations

    What to do with distributers earth after conversion to TT & advice on where to place the rod

    Afternoon all I am looking for some advice as on what to with the suppliers earth after a conversion to a TT system. Current issue is earthing arrangement is TNS, reading was nearly 60 Ohms, reported issued to DNO, they are effectively washing their hands of it as the (based on what the...
  5. UKMeterman

    Single wire earth return used at 500KV

    Hi, you might like
  6. Mark Wright

    Light fitting no earth terminal and metal

    Hi, the new lights I have are metal and the earth connection doesn't connect to anything. I noticed the light that was there before someone had connected an earth to one of the bolts of the metal frame using a fork crimp. What would you do?
  7. B

    Regarding TT earth system

    Hi How do i access the earth rod to service it, where abouts will it be located and does a tt system have upfront rcds which will be probably in another enclosure? cheers B
  8. O

    Earth Bonding requirements

    What are the regulations requirements on Earth bonding ? I am currently planning a 1st fix re wire I have the following setup Gas Meter Mains water after stop tap whole house is plastic. Combi Boiler Thanks in advance
  9. TonyandCheeny

    Strange voltage on earth wire

    Hi, I've got a light with a ceiling rose in the kitchen. While rectifying some faults in the house I came across to the light and measure Neutral to live: 240 volts (which is fine ofc) however when measuring earth to live I'm getting 150 volts. I have checked for any touched wires with my Fluke...
  10. snowogu

    Hi just found light without earth connected do I need to do anything with it. The case is metal.

    Hi does the earth need to be connected?
  11. R

    UK Class II enclosure + gland recommendation for divorcing SWA armour at TT outbuilding/shed?

    As the title says, I am looking for a recommendation for an enclosure and gland arrangement to electrically isolate or divorce the earth/armouring of a two core SWA supplying an outbuilding/shed. The supply to the property is overhead TT, so DNO provide phase and neutral only, a sub 20 ohm rod...
  12. J

    Are these earth wires connected to neutral?

    I found a picture online of a standard UK connection in a block of flats. Where I have circled blue, would those earth clamps around the orange cable somehow cut into the neutral wire to connect within the orange sleeving? Or are they just clamped to the sleeve for some arbitrary reason?
  13. S

    Undersized main earth on eicr

    Hi all, just looking for guidance on how you would code a 2.5mm main earthing conductor on a property with 10mm line conductor. Basically on a massenette the one below has the incoming supply, and the one above I'm working in is looped supply off it the one below, 10mm tails in conduit with...
  14. T

    Induced voltage on twin and earth cable

    Why would I be getting 94v between cpc of twin and earth terminal at DB? Connected into rcbo with the other end 3 cores separated, nothing connected.
  15. M

    Live incomer is earth cable wrapped in brown tape?

    Hi I wonder if anyone has any useful thoughts on this. Client wants me to redo consumer unit but doesn’t want disruption to fabric of building. I’ve attached pic - looks like original wiring was a 16mm earth to the live incomer . The meter box is >20m away. I guess cable is cable but 16mm...
  16. B

    Earth terminated outside.

    Hi All Seen this on a few jobs now where they have on the Downlight fittings where the CPC is terminated outside the enclosure of the Downlight due to not having a earth connection inside. Does anyone know the reg that states that this is not permitted and earth connections should be inside...
  17. Z

    Main earth size on TN-S

    Hi guys. I was on EICR yesterday, where i found that the main earthing conductor is with very small csa- no more than 2.5cm2. Also they run the wire directly behind the CU, where it is twisted with 10mm2 and continues to the MET inside the board. Ze at the board is 0.28 ohms and seems to be ok...
  18. A

    Earth wire for light

    Hello all Sorry if this has been answered previously..... Got a light with this earth wire (picture attached). I can see from the instructions (picture attached) where the earth wire is to be screwed into, but what about the other end with the exposed twisted wires? Have I to tape that end to...
  19. captaincaveman

    Anyone ever come across a neutral using the earth on purpose?

    Just interested in peoples thinking on using the neutral through the earthing system like I came across today. I've come across many wrong polarities tripping mcbs before but not this. The outside front door light live conductor was wired into the lightswitch inside but the neutral was wired...
  20. L

    Earth rod for back up genny

    Hi folks, installing back up gennys not my thing.Cant avoid this one though.Have looked through previous threads.Two things still not entirely clear for me are... 1) Are there any reasons why the homes existing earth electrode wont suffice? 2) If a separate rod is required ,what...
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