volts

  1. HappyHippyDad

    What could cause my voltage to drop to 28V??

    Evening all.. I have just tested a cable that I had put in place myself for a smoke detector and I am only getting 28V L-N. I am getting 240V L-E. When I first put it in it tested 240V. Since then the builder has been in and put the ceiling up, I'm not saying this is the cause but this is the...
  2. J

    Strange Low Voltage Readings

    Hi guys I've been doing a partial rewire. And I have taken a feed from a light that is fed, to feed a switch in a new extension. I wired up the lights and switch in the new extension but the light would not turn on. I measured the voltage at the light that's not powering up L-N and I'm only...
    • Jamie181191
    • Thread
    • earth light low voltage readings strange tested voltage volts
    • Replies: 16
    • Forum: UK Electrical Forum
  3. S

    Crompton Voltmeter

    I have come across this recently on a site and was just wondering whether anybody knew if it was worth anything or not ?
  4. yellowvanman

    Voltage Monitoring

    Customer has been trying to use a dishwasher using Economy 7 at night, and its not working properly. Works fine during the day, Miele engineer says nothing wrong but the cause of the problem is a pressure switch that ends up with the dishwasher failing to heat the water. Water pressure has...
  5. S

    Advances in photovoltaic technology

    We were hoping to get a solar installation done by now, but we ran out of money. While we continue to save up, I read today that solar panel costs could significantly come down. Breakthrough in solar panel manufacture promises cheap energy within a decade - Science - News - The Independent But...
  6. A

    Voltage Drop

    Hi, I am sitting in C & G 94/95 exams on 22/04/2015. i am attempting past papers and got confused regarding some voltage drop questions below: 1.Compliance with the voltage drop for a 230 v single-phase electric Kiln circuit is to be confirmed. The circuit is installed using thermoplastic 70...
  7. E

    Trying to setup 21 Computer Fans each rated 12 Volts, is this correct setup?

    Hi all, I’m completely new to any kind of electrical work and would be grateful if you guys could confirm my setup to be correct. I’ll try to be as clear as I can: I have 220V coming from my Wall Socket, so I assume I have 220V to use. What I’d like to do is, use the...
    • Electronic
    • Thread
    • computer correct fans rated setup trying volts
    • Replies: 15
    • Forum: DIY Electrical Advice
  8. Simon-0116

    fluke t90 voltage continuty tester - beeping

    Just bought a fluke t90, can you turn the beep off when testing voltage. Always used martindale and seperate continuity tester( cheap multi for buzzer). Thought these looked good but anoying everyone now.
  9. naylorpd

    Small voltage from neutral to earth on TT system

    I'm building a house in Azerbaijan, with 3 phase mains supply and TT earthing. The main transformer is at least 800m from my house. Whilst doing my final measurements before going live, I noticed a small voltage between neutral and earth. It varies between 2-4V and seems to be AC. It isn't a...
  10. G

    Bizarre voltage readings

    I have installed a new cooker supply to the new DB. The cable is a 10 mm T+E. It's on a 50 amp RCBO. (Big cooker!!) tested the cable and made put it in connector block and switched it on. I was getting 240v down live to earth which is correct but neutral to earth is was getting 40v. Then live to...
    • Gossy
    • Thread
    • cable cooker earth getting neutral readings voltage volts
    • Replies: 15
    • Forum: UK Electrical Forum
  11. J

    Voltage drop for fp200

    Hi, Am running a radial power circuit in 4mm fp200 with a 20A rcbo but am a bit worried about the voltage drop. I have a 70M run clipped direct and by my calculations I will need to go to 6mm. I am using table 4d2 but don't know if there is a table for fp200.
  12. T

    240 volt outside light measuring 180 volts.

    Hi all. Looking for advice here. The mother in law had her house extended and totally rewired by someone that said to her he was a qualified sparks. I've been up the loft and found crimped wires and not even clipped down and a whole host of lovely terminal block connections. One set of these has...
    • Therolster
    • Thread
    • block don't light measuring outside outside light terminal volt volts
    • Replies: 24
    • Forum: DIY Electrical Advice
  13. Sonia Norman

    voltage tester

    Hi I am probably going to sound stupid asking this question but here goes. I have just bought a new LAP voltage tester. when testing my plug sockets using a socket test connector I am getting a reading of .410V. Now this is where I will probably sound stupid but I was expecting around the 230V...
  14. P

    Full Calculation of Perspective Fault Current - PFC

    I seem not to have access to the professional forums so I post this here: I understand ohm's law and to get a current you use Volts/Resistance (V/R); so if it's Perspective Fault Current (PFC), it's V/R or Volts/Ze; and we divided by 1000 to convert to kA. Yes? Is there a difference when...
    • puffy
    • Thread
    • calculation current difference fault fault current higher pfc volts
    • Replies: 2
    • Forum: UK Electrical Forum
  15. T

    Fluctuating voltage on a lighting circuit - advice please!

    Evening all. I got called out to investigate a problem with a two-way switch on a landing light and I was expecting to find a DIY bodge with incorrectly wired 3-core. However, it was more interesting than that! Customer reported that when the light was off, after 5-10 minutes it would briefly...
    • The General
    • Thread
    • advice circuit fluctuating lighting lighting circuit please voltage volts
    • Replies: 26
    • Forum: Talk Electrician
  16. D

    working out volt drop

    Hi I have been looking in to wiring up a garage which has a exsiting swa cable running to it just wanted to run this by some of your for your opinion . Supply is from 20a rcbo using 3 core 2.5mm swa into isolator In the garage there is to be 2 power sockets and 1 lighting circuit with 4...
    • darren1981
    • Thread
    • electrical work out volt drop volts working
    • Replies: 48
    • Forum: Talk Electrician
  17. S

    Voltage Stabiliser

    Hi all, do any of you have any experience of voltage stabilisers? Can they be fitted on sub-mains, or do they need to be at the origin? Thanks in advance
  18. A

    voltstick's /brewstirers

    Just a bit of a rant really. I had a di-log voltstick which was bloody brilliant and quite sensitive. It recently broke and a few of the fellas I worked with were using a few different varieties of FLUKE, and knowing that its a good brand I parted with £20 and was dissapointed from the word go...
  19. S

    New System - 2 Arrays - Wondering why low voltage on 1st array

    Just had a new 4kw solar pv system fitted, with two arrays of 7 panels, one above the other in the same direction. I flicked through the statistics and noticed that the first array was only producing 1w, when the 2nd array was producing around 900w. So I checked voltage and found that was on...
  20. A

    Permissible voltage drop 415V three phase power circuit

    Can anyone tell me what the permissible voltage drop is for a three phase circuit serving a power circuit. Is it still 5% like for a 230V circuit. I don't have my BS 7671 to hand at the mo. Thanks in advance.
    • atm84
    • Thread
    • circuit phase power three three phase voltage voltage drop volts
    • Replies: 5
    • Forum: UK Electrical Forum

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