earth

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  1. R

    UK Main Earth Cable Source

    When earthing gas and water service pipes do the 10mm earthing cables HAVE to come from the main earthing terminal (first tee) or can they come from a consumer unit that is connected to the main earthing terminal by a 16mm earth cable ? What specifiacally do the relevant regulations say about...
  2. D

    6mm incoming earth

    Hi all This is a follow up from a previous thread I posted about 16mm tails. Just had two electricians round to quote for a board change, they were both happy to do it with 16mm tails but the incoming earth is only 6mm they have advised me to get onto the electricity supplier and upgrade the...
  3. S

    Earthing with solid rock below surface - burying tape for lightning earth

    A quick search for earth tape didn't come up with much, though this thread was of interest. I'll start by mentioning that I've led a sheltered life and only ever dealt with PME (TN-C-S) so never had to deal with earth rods. At our church, we've had an inspection of the lightning protection...
  4. J

    Tri Rated 35mm Earth - Johns adventures of tin tin - or not...

    Hi. I have some TP supply SPD and JB to re wire in 25mm TRI rated cable this weekend. For the Iine conductors i am using 35mm DIN connectors with manufacturers links between - it is all being housed in a Hager Din Extension box with window. For the earth, I have 5 x terminations at 25mm. But...
  5. S

    Cutting the Earth

    Hi guy I was doing led stip lights and I cut the earth out of the cable at both the 12 volt and 230 volt side is this safe to do this
  6. L

    Earth Identification

    Hello, I've been asked to replace an existing 185mm earth cable as it's a black HO7 cable that has been marked up with green/yellow heat shrink at intervals along its run and then fully once its entered an enclosure at each end. Client wants it green/yellow throughout its run. It's run in a...
  7. HappyHippyDad

    Tingle from earth rod.

    I have just been out for a pre works visit to fit an electric shower. I cant access the CU as it has a cupboard built in the way. It's a TT and when I touched the earth rod whilst clearing the mud out of the way (I wanted to actually see the connection) I got a shock. It was more of a tingle...
  8. jezzurp

    Join earth wires (from 3 power cables) together when wiring temperature controller (ITC 1000)?

    Hi all I haven’t done much of anything with electrics since secondary school (long time) and hoping someone might just double check what I’m saying isn’t totally wrong! Im building a keg system for home brew using an old chest feeezer. To regulate the temperature I’m using an ink bird ITC 1000...
    • jezzurp
    • Thread
    • cables controller earth earth wire itc 1000 keezer power temperature together wires wiring
    • Replies: 13
    • Forum: UK Electrical Forum
  9. S

    RCD earth leakage meter.

    Hi all, looking for recommendations for an earth leakage test meter for RCD work that doesnt cost a fortune. Thanks in advance.
  10. SJD

    Supplier earth terminal on intake

    The attached photo shows the suppliers head that includes an earth terminal. The incoming supply cable is a single phase plastic sheathed cable containing L & N. The earth terminal is not actually connected to anything (not internally linked). The DNO is SSE. A previous contractor was under the...
  11. timhoward

    Calculating broken PEN touch voltage with backup earth electrode

    My brain has been exercised a bit by this. Am I on the right lines with this extremely simplified example: If we take: -TNCS installation with a Ze of 0.2 ohms. -Plastic services, nothing bonded, keeping it simple -Line conductor resistance from supply transformer should be similar to PEFC and...
  12. M

    Bathroom UFH earth mesh

    Whist looking up something unrelated in section 701, I noticed reg 701.753 Stating that underfloor heating wire in a bathroom must have an earthed sheath or metallic earth grid etc etc & that electrical separation shall not be used It got me thinking, the underfloor heating wire I used in...
  13. Haphazard81

    Continuous earth fault

    Hi, We've lived in the house since Feb 2009. We've had a few tradesmen in and out over the years. We wanted to make sure the electrics got properly certified so used a company locally. They said there was no continuous earth so they used 2 radials a 20 amp and something else which will make...
  14. B

    Earth Rod install

    Hi all Having to install a earth rod In for a hot tub, hot tub just installed outside the house. I am planning on installing earth rod 100mm from edge of house what are the chances that there will be services below this line. The gas pipe and water pipe are further along the wall about 2M away...
  15. W

    Earth to neutral fault????

    Hi, I have an old style fusebox and planning to replace (via electrician) with a modern one (wiring was uprgaded by previous owner) and I noticed when removing a spur line to the outside that was not going to pass muster that my multimeter was showing that earth and neutral were connected. I...
  16. timhoward

    Air circulation supply, no overload protection, no earth?!

    An agreed limitation of this EICR is that the air circulation unit circuit will not be inspected beyond the switchgear / controls due to no safe means of accessing units on roof of 4 story building. We're discussing how to resolve this. In meantime: I'm inspecting the air circulation supply at...
  17. K

    Live earth fault??

    So was testing a house today (new build) When I came to testing on of the ring finals in the house, when testing insulation resistance the live and earth legs on the ring are clear but live to the earth on cpc’s on the cooker circuit, other ring, downstairs lights and heating its bang down I’m...
  18. S

    UK Line to Neutral 0 volts , live earth 30 volts , neutral live 30 volts

    Hi. Turned power off to change a socket front. Turned off at breaker not the RCD or mains. Checked that socket was dead got these readings Line to Neutral 0 volts , live earth 30 volts , neutral earth 30 volts. This is an old French house on a 3 phase supply Split at consumer unit and then each...
  19. G

    Earth leakage circuit breaker

    From a brief bit of Internet research my understanding is earth leakage circuit breakers monitor voltage on the CPC rather than an inbalance in current between L &N as an RCD does. Is this correct?
    • goasis
    • Thread
    • breaker circuit circuit breaker earth earth leakage leakage
    • Replies: 18
    • Forum: UK Electrical Forum
  20. C

    Interconnection of MV Earth with LV Earth in Public Supply

    What factors determine the interconnection of the MV neutral/earth with the LV neutral at the local substation? When are they connected together and when would it be appropriate not to connect them together?

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