volts | Page 10

volts

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  1. K

    Volt drop at the other end of a SUB main.

    Hello people Just so i get this right i thought i would post my maths here for people to comment on. Garden lights on a sub main. Sub main is 20meters from the main CU on a 6mm armoured cable. the last light is 50 meters from the sub main. meaning end to end 70 odd meters. So my maths are...
  2. Michaelp

    Voltage and Continuity Electrical Tester

    My fluke T140 past away this week and now looking for a new tester.I was very satisfied with the T140, very practical and fast. My dealer have only the new T150 at 190euros.On ebay is aprox 160. Before ordering a new one was thinking to ask here and see what you are using ? If there is any other...
  3. M

    230 volt IPX5 100MM FAN

    Can anybody recommend a high quality made extract fan 230 volt with timer for zone 1 of a bathroom . All the ones that I have been shown seem to be:charming: very flimsy. Cheers
  4. Simonslimline

    3phase volt drop.

    This is one of a weekly question by sparks magazine posted on Facebook to win free tools each week. Everyone has answered B. 8Volts. I am not sure this is correct. Please could anyone help me with this. I have posted it up in here rather than just the trainee section so more people will see it...
  5. W

    how to add an outside socket for a pool heater that requires 19 amps 240 volts

    i have recently bought a pool heater that requires 19 amps 240 volts and that doesn't have a plug socket. im looking at ways i could add this to my mains and that cant be plugged in permanent.
  6. F

    Low Voltage distribution

    Hi All, Only my second posting here so apologies for any transgressions in advance. This is almost certainly a post for the DIY section but since I can't post in there, here goes. I'm after advice about Low Voltage distribution, as in: If your charging Batteries from PV/Solar and Wind, and your...
  7. T

    Low voltage cable

    Hi guys Does any one have any particulars on the best cable to use for low voltage lighting. Got a large wiring scheme to do which is all low voltage LED lighting but want to make sure I use the best graded cable so not to cause problems later. Been told to use a 2core twisted pair to gain a...
  8. C

    TT System 400 Volts To Earth

    Hi all. First time on the forum, but have enjoyed reading many ofthe threads, thanks. I am looking for some advice on a fault from a TT systemand would greatly appreciate any input. History, my wife and I are volunteering in Africa for a fewyears. The charity I am helping does not have an...
  9. J

    Recommend Voltage Regulation for LED

    Hi I have been scratching my head over this one - first time posting on here, so "hello"! What I am looking for is the *best* solution to provide 2.4V DC at 700mA to a high power LED from a 12V DC supply (motorcycle indicator in this case). The spec' of the LED is:- Max Forward Current...
  10. G

    Calibrating voltage indicators

    Im getting everything setup for my part p assessment and am wondering if i need to get the voltage indicator calibrated, its the dilog combivolt 2. Ta.
  11. Les Macaulay

    Nominal Voltage

    Why has nominal voltage gone from 250Volts back in the good old days, to 240Volts, several years ago, to 230Volts more recently? What is the legal max and min tolerance in the 230Volt level?
  12. C

    Solar photovoltaics

    Hi Guys, Ive been looking at various different courses in relation to fitting of solar pv on a domestic level to begin with then progress on to larger installs the biggest problem im having at the moment is not only are most places stopped running the courses due to the reduced 'fits' but what...
  13. M

    sma sb1700 over voltage ac? Help pleaseeeee

    Evening all, I got called out to a job the other day were the customer has 2 x SB 1700's in the loft. The complaint was that the inverters cut out every so often, he knows this because he constantly monitors his sunny beam device. The error registered as unknown and to contact the installers...
  14. Simonslimline

    Frequency - Volts - Amps. A little help please.

    Ok i just spotted this in the main section of the forum and it got me thinking about the answers. I dont remember doing this at college. A reactor allows a current of 15a to flow from a 230v 50 Hz supply. Determine the current which will flow at the same voltage if the frequency changes...
  15. O

    Volt drop question

    Hi all Just had an enquiry for 50 kw ground mounted PV system, the proposed system is to be connected to a three phase supply In an industrial unit, the ground mounted array will be approx. 200mtrs away from the unit. The inverters and generation meters are to be mounted next to the...

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