Search results

Search results

  1. M

    UK 32a supply for a hot tub of a PME supply.

    In my opinion using the Matt-e single phase verison for a hot tub gives you a false sense of security, as it only protects against some PEN conductor faults but not all, it is likely you can have a open PEN conductor and still have a voltage between 207v-253v between L - N depending how the...
  2. M

    Testing Ze when you cannot disconnect the bonding?

    Discconect cables at the water and gas pipe end, or maybe they would take a cover off the service head I don't know for sure, but discconecting the other ends of the cable seems simple to me
  3. M

    Zappi car charger open PEN protection

    Haha yeah, I will let you mention it to the tesla owners
  4. M

    Zappi car charger open PEN protection

    How do you figure? for an RCD or MCB achieving ADS in normal circumstances when the PEN conductor is intact then yes Zs etc will determine if it will disconnect in time. But you have no or very high Ze during a PEN conductor fault so any previous measuret on Ze or Zs doesnt help in this...
  5. M

    Electrode Seperation

    yeah if underground, making it even harder for separation , doh On my road i can see the electrodes at the bottom of the poles so bit easier to tell where they are
  6. M

    Electrode Seperation

    I see, yes some people mention using an earth mat for a hot tub in this case the ground you would be steeping out onto would also raise in potential so the touch voltage would be reduced I see what you mean about low risk and practicalities of testing, Was wondering as I have seen some videos...
  7. M

    Electrode Seperation

    Indeed, So if installing an earth rod for an EV charger on a small site with a 1x1m garden so no space to perform a 3 wire test so you perform a loop impedance test on it instead, then how would you be able to ascertain if your to close to PME metalwork
  8. M

    Electrode Seperation

    Not quite: If you were to put a 2m earth rod at the edge of a garden and just the other side of the fence to next door garden there is an underground metal water pipe 1m away from the rod and the pipe was bonded to PME earth If using a 3 wire test, I cant see how you would detect the presents...
  9. M

    Electrode Seperation

    I have done so, have watched the JW videos on it and some others, and I already understood how to test electrodes. But still unsure how to test if you are in the PME influence area so to speak, if not known you could be a few meters away from a PME bonded water pipe, etc In which case if there...
  10. M

    Electrode Seperation

    Hello I am wondering what would be the correct method for testing electrode separation distance For example, if installing an EV charger or hot tub from a PME supply and chosing to TT the EV charger / hot tub, how could you ensure you are a sufficient distance away from any buried PME bonded...
  11. M

    Zappi car charger open PEN protection

    @ArtElectrics does seem to install a fair few of them, would be good to know his thoughts
  12. M

    Zappi car charger open PEN protection

    Another thought on the Zappi 2 car charger. It measures utilization voltage and disconnects if outside of the range of 207v-253v and for when a PEN fault occurs where the voltage remains within this range it disconnects if it detects any current flowing on the CPC Surely this is not automatic...
  13. M

    EV & TNCS Food for Thought

    Just a little thought here, With PME / TN-C-S supplies being most common, and the difficulty with EV charging from this earthing arrangement are: 722.411.4.1: (i) = Very difficult to ensure 3 phase loads are always balanced in the real world (ii) = Unless in a new build with foundation...
  14. M

    UK Diversity

    Shower = 43.7A 2x Heaters = 26A Radial circuit on 16A MCB = 16A Lighting circuit on 6A MCB = 6A Total of 91.7A or 21.1kw Seems a lot for a shed, I guess the lighting circuit will be way under 6A & if the 16A circuit is it used for sockets hopefully they won't need to plug any more heaters...
  15. M

    UK Diversity

    Maybe you could set up a priority unit to turn off circuits when the show is on, etc Like this: View: https://www.youtube.com/watch?v=N_jTZbpUfTc 1591785311 Doh, must have posted at the same time !
  16. M

    Maximum Branches from Socket on Radial that's acceptable.

    Are you referring to sockets on a spur off a ring final circuit As far as i understand it, if it is an unfused spur then only 1 double gang socket is permitted If using a F.C.U then I think you can have as many as you like as the cable is over load protected by the fuse in the F.C.U. If more...
  17. M

    Legalities surrounding lamp making

    I have actually made a light from a trombone. As I couldn't earth the trombone without ruining the aesthetic, I fitted a 12v lamp holder and ran it from a SELV transformer, I was not concerend with the legallity as it is for my own office and not planning on selling them
  18. M

    Legalities surrounding lamp making

    If using already CE marked and type approved lamp holders, and then fitting these lamp holders into a home made case (almost like making a homemade lampshade) I wonder is this would comply / be easier as all the electrical components are already exsisting products being put together I have no...
  19. M

    Any point getting this consumer unit replaced?

    My personal opinion would be to get a EICR done, which will tell you if the whole installation is safe or not. The fact that is is plastic doesn't mean it needs to be replaced with a metal one provided it meet the regulations at the time it was installed. It seems strange to me that a ring...
  20. M

    The big difference in the electric terminology and installation regulations and practice in each country!

    No was not talking about lock out tags, was mentioning observations in how power is supplied for events, in venues in the US (what we meed to plug into) its basically the same as me saying alot of countries use different plugs, but this one in particular I cant understand for the main fact...

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top