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understand

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  1. M

    EMdrive funy tory NASA don't know how works bulb

    Few days ago Nasa published raport http://ntrs.nasa.gov/search.jsp?R=20140006052 in 2013 Chine scientists also confirmed EMdrive ( Everyone understand that engine is moving but they not understand WHY and How )
  2. spud1

    testing sports field floodlighting

    Hi, I have had a client (Football Club) ask if I can test and certificate their sports field floodlighting lux levels for the regs of the league they are in. Does anyone know whether formal training and qualification is required for this or can anyone with a lux meter and the appropriate...
  3. H

    TN-C-S to Outhouse - Don't Quite Understand

    TN-C-S supply with submain to outhouse: Scenario 1 - 10mm 2 core SWA to insulated board in outhouse - SWA not banjo linked to local ET and earth rod installed (TT) - nothing extraneous in building. Scenario 2 - 10mm 3 core SWA to metalclad board - SWA banjo linked to local ET...
  4. D

    Worki in Iraq

    I was in south east asia and met a fellow working in Iraq. I ended up losing my phone and his contact info. He was working 5 weeks on and 5 weeks off. Does anyone know the name of an electrical contractor working there. I want to apply. Dean
  5. J

    Can anyone help me with my understand of circuitry

    Hi all, I am currently in training as an apprentice electrician, and so am constantly trying to improve my understanding on domestic circuitry, one circuit that bothers me are lighting circuits and the many methods of wiring them, at this present time I can understand how they work but still...
  6. C

    Taking feed from switch? netural help/advise

    hello firstly mention new on here and have tried to look for diagrams etc but cant see to find. i am looking for diagrams for circuits wired up from taking a feed(live) from 2 gang switch from the com from one to the next in which to be another taken to say another light. understand you'd be...
  7. S

    E-on meter fixer job

    Hello, was wondering if anyone has got a job as a meter fixer with E-on or any other large outfit and what did the practical and written tests involve ?
  8. P

    23 things your kids or grand kids will not understand

    23 Things Your Kids Will Never Understand
  9. D

    2365-303-304-305!!!!

    I've changed career about 2 months ago and decided to do an intense course on! So from knowing nothing to completing level 2 and right up to these assignments I've felt I am learning and getting somewhere! On tues I've received the 303-304-305 with tasks A n B to all 3! This has blown me away...
  10. P

    Training advice please

    Hi all i am new here. i have spent a lot of nights on here researching but nothing really relates to my situation. so i want to retrain as a sparky at 24 but heres the problem, i have multiple sclerosis, a 3 year old and house so college/apprenticeship isnt really for me due to financial &...
  11. Rockingit

    Anyone here work for 02 or understand about mast triangulation techniques?

    Hi all, I'm looking for help in going about tracking the last know location of a mobile phone - not because I've lost one, but because on a 100% serious level it may provide a valuable clue into the death of a friend recently and the police seem reluctant to follow it up. Any PM's much...
  12. O

    Does anyone understand this

    Bit odd this, back ground is that the off peak doesn't seem to be working... Interestingly the display didn't change the whole time we were looking at it, and despite turning on a number of panel heaters that didn't do anything either: The reading on the meter display is: r 0.00 1/1 COrr...
  13. C

    Rcd trip

    Hello, been at a job today where I am adding in new lights,fan etc into new bathroom. old rewirable db, with a 4way rcd board added in for downstairs bathroom . So, to cover my work I ir tested upstairs lights circuit with the intention of moving this circuit to the 4way rcd board , all ir...
  14. S

    Understand Electricity with Simple Theory and Diagram

    Just visit at "www[.]williamson-labs[.]com" for Understand science with Simple Theory and Diagram. Really , this is also very nice
  15. S

    Can you help me to understand my bill?

    Hello friends, I am in a rental property and the main electricity meter supplies two properties. An additional meter reads the consumption for the second property. Though the main meter has on it 500Imp/KWH, but the meter for the second property has on it 1000Imp/KWH. I am assuming I can't...
  16. B

    Is sex work?

    An RAF Group Captain was about to start the morning briefing to his staff. While waiting for the coffee machine to finish its brewing, the Group Captain decided to pose a question to all assembled. He explained that his wife had been a bit frisky the night before and he failed to get his usual...
  17. L

    How I understand a system works and what I'm being told by Solar company

    I had a 4kw system fitted last November with a Mastervolt 5500 inverter. As I understood it, all the electricity produced by the system is first used by my house with the rest not used being exported back to the grid. I understand that if my house is using 1kw and my system is producing 2kw then...
  18. P

    what rcd amp size?

    hi, what RCD amp size to power an outbuilding that has 4 x 2 gang switches, 2 x 1800mm twin florensent lighting, 3 x outdoor flood lights, 1 x multi-gang single pole switch also im guessing it would be best to have another distrubution board out in the outbuilding? thanks you for any help...
  19. F

    Help to understand pfc pscc values

    Can some one explain if your pscc value is say 4.6ka well in gn3 it says that your protective device must not be less than that value so say the protective device was 5ka how would the protective device trip if it's fault current was only 4.6ka please explain cheers lads
  20. D

    Generate & understand your own Sun Chart ( Azimuth )

    Someone has recently asked me how I produced my own Azimuth Sun Chart So I thought it maybe of use for those who are interested to show details here; I simply used one of the many websites that calculates this from your location ( postcode or actual GPS points ), pitch of roof and the...

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