Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 111 replies
  • Subscribers 32 subscribers
  • Views 11717 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Minimum Voltage at incoming supply point

FlyWheel
Retired now and not up to date with reg’s since 16th. Helping advise a friend. Currently they have 100amp single phase supply and whilst the no load voltage is up at around 238 volts, as the circuit is loaded, voltage drops off substantially. Even with a load of 50 amps, ie, half the supply fuse rating, voltage is slightly below the -6% limit, at around 215 volts, further load simply pushes voltage significantly lower, and by extrapolating measured data, it would be nearer 170 volts with a load of 100 amps, is this acceptable? I plan measuring Ze and pfc this week as a guide perhaps to supply loop impedance and, which I suspect must be causing this excessive drop. I’m aware of the ESQCR reg’s although need to update myself, but are there any other regulations that apply?

  • 0
    Is that still the career path?
  • 0
    A big solar photovoltaic array at the bottom of the garden could help a bit.


    Andy Betteridge
  • 0
    We have a guy rod, 71, has spent 56 years in the job (overhead linesman). Started as an apprentice in 1963 aged just 15.

    Regards, UKPN
  • 0
    I was planning ignoring your pathetic comments UKNP, and leave you to play with your toys, but one last comment first perhaps, and yes, I still have my own AVO 8 too, great bit of kit.
    Wow, all that experience and all this “engineer ” can do is report back “Have checked the data from the voltage recorder which shows that the average voltage supply is in tolerance whatever there is over 2000 events for that one week period where overcurrent/that mean the current you drawing  causes voltage drop down which could causes flickering lights, tripping, burning to the tails, damage  or even trip the main fuse. I would recommended to split the load. This case you will need to apply to UK Power Networks for 3 phase supply.”

    Oh, dear, they applied for a 3-phase supply around 10 months ago, need I go on --

  • 0
    "A big solar panel at the bottom of the garden will help"

    Don't give him ideas we will never hear the end of it. Its taken a week and he still hasnt done a loop test. Not that he will tell us the result anyway!!!?


    Regards UKPN.
  • 0
    Yes, great in the summer Andy, but not so good this time of year, I regularly watch the gridwatch site (currently showing zero for solar of course). and fitted daughters canal boat out with them, great in the summer, but she is back to generator/engine again for the winter of course.
  • 0
    Ah, well! Often the solution to a problem is to throw money at it.
  • 0

    UKPN:

    We have a guy rod, 71, has spent 56 years in the job (overhead linesman). Started as an apprentice in 1963 aged just 15.

    Regards, UKPN




    And when he does retire will he be replaced by a graduate?

  • 0

    FlyWheel:

    No, even closer Alan, the Vulcan Arms. . . 




    Ok, that would be Leiston  then. In the days of the CEGB, I was involved with communications to the Sizewell site. My site contacts were in the Instrument Maintenance Department of Sizewell “A”. I got to know some of the favoured pubs around the station! 


    Regards,


    Alan. 

  • 0

    Chris Pearson:




    broadgage:

    Before complaining though, do try and ascertain what the agreed supply capacity is.




    Have we had an answer to this important question please?


     




    Not always easy to find out the ASC is.  Being curious of ours at home, I contacted our DNO, Scottish Power, and gave them our full address and postcode together with the Supply number. This December last year..I received a reply back a couple of days later,


    Quote/...

    Good Morning Mr Carver

    Thank you for your email with regards to the above address.

    Unfortunately SP Energy Networks do not deal with this type of enquiry.  However, your supplier Gulf Gas and Power should be able to assist you in this matter so please contact them on 08008303670 to discuss this further.

    .../unquote.

    I did as I was told and telephoned Gulf Gas and Power, who as expected, told me they they didn't know and to ask my DNO!


    The reason that I was curious was that I witnessed the meter change at the identical property next door. I asked the Engineer what rating the cut-out fuse was (ours from similar witnessing is 80 amp) and he opened up the fuse carrier to show a 60 amp fuse bypassed with a paperclip! The cut out was previously sealed, but in fairness to the previous sealer, the paperclip was not visible and only became so when the fuse was removed to sight the rating. Needles to say the 60 amp fuse was o/c.  


    Since that was nearly a year ago, I have just emailed Scottish Power's Liverpool address again to ask the same question. This is the address which their website says to contact for Connections, Alterations and Disconnections. I will share their reply in due course.


    Clive

Community Rules & Guidelines