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  1. I

    Need to understand the neutral conductor

    Appreciate there are a lot or questions about this already but I just can't seem to grasp it so hopefully asking the question in my way will help. Background: UK 240v AC domestic system. As I understand it, if everything is wired correctly and there are no faults, I can touch the neutral...
  2. OnlQQker

    Trying To Understand Diversity

    I'm trying to understand diversity a bit more. Someone, somewhere done a calculation to determine how much use the circuits would be undergoing at any one time. But what if somebody moved into a flat/house and didn't care how much it cost and just run everything all at once. I know this rarely...
  3. Automation ATO

    I don't quite understand the brushless motor parameters

    ITEM Qunt SERVO MOTOR 3 PHASE BRUSHLESS 2 IFT 6034-4AK 71 – 3AA1 EN 60034,NO YF P 921 6207 01 003 H CE Mo 1.65/2.0NM IO= 2.15/2.6A 60/100K MN= 1.4NM ŋN = 6000/MINT UIN-300 VY IM B5 IP-65 TH...
  4. sham

    Is a web-page necessary as I do not understand it's worth for more work.

    I never have and still do not understand how a web page can get me more work. I can't imagine someone in their underpants on the internet typing for an electrician whereas he can ask his neighbour or someone anywhere or phone a friend. Most of the work I have got is through friends and me giving...
  5. N

    Domestic Help needed to understand an alternator load problem

    Hi all, I am looking for some expert advice and knowledge to help get my head around an alternator load problem. This has been on-going for about 18 months... Vehicle summary; 1993 Mazda MX5 import. Originally a 1.6 but I have put a 1.8 engine in from an early MK2 MX5. I also fitted a UK...
  6. andysparkfree

    need to fully understand ... and im just not getting it

    Hi guys i need an idiots guide to the following and i know you guys know your stuff swa armouring as a cpc only now i think i know the following , but how to put it altogether and where 8.8 comes from is just confusing me , so if i start again and you good people so 4 core 35mm swa has csa...
  7. N

    Trying to understand 3-way switch and smart lighting

    Hello, Total newbie here and as you can tell from my name..... I'm definitely not an electrician. I've done a bit of electrical hackery in the past, mostly in cars and a bit of soldering, but this all feels a bit beyond my ability and I'd rather not be electrocuted and die before my 30th...
  8. N

    Domestic Trying to understand why smoke comes out of my monitor.

    So I have been renovating some old Steadicams. These run off V mount batteries on the bottom brackets which feeds power to the camera and accessories on the top stage and the monitor on the bottom bracket. Electrics is not something I know too much about but I’ve tried to do some research and...
  9. K

    2357 Portfolio Question I dont understand

    Hi All, Im trying to answer this requirement for my portfolio: 'Show me evidence of procedures that are in accordance with requirements for electrical systems and equipment for relevant sections of the building regs' (criteria section 312.1.2) Now it may be me but Im struggling to answer this...
  10. D

    Quick Question - Which course should I begin with?

    Hi guys, I'm thinking about a career change to becoming an electrician. I've found some courses at my local college and was wondering if it was worth me doing the 17th Edition Wiring Regulations (BS7671) course before any other? Or am i going in too deep with that straight away? I have no...
  11. M

    I need help with wiring, please!

    Hi guy, I have a project to do and I am a little bit stuck. So, the problem sounds like this: I need to connect a cable with 4 wires (power, data+, data-, gnd) with a 6 output pins to get pwr, smclk, smb, 2 more pins and the ground. Could someone advice me with his, a little bit? I would...
  12. G


    Hi all, I just signed up to the forum and wanted to introduce myself. I am not an electrician but I convert vans and trailers for specialist use or just basic racing and lining. Anyway thats my introduction. Ive been on here a few times to find or confirm information and i am impressed by the...
  13. S

    I'm dissapointed with Not A Chance

    So disappointed with Not A Chance. The day arrived for induction doesn't even last 40mins. The assessor doesn't explain in many details , more like he's quickly flicked the pages. At the end of session wanted to ask him more question but he's more into hurry out to the office collecting the fees...
  14. W

    What's needed for domestic if already qualified and have 2391?

    Hi guys, I'm already qualified as apprentice trained (NG Bailey) to 17th edition (new, C&G parts 1&2 and AM2) and have 2391 test/inspect. I worked on industrial/commercial from 91-2008 then moved over to periodic inspections. I've been out of it the last three years to bring our daughter up till...
  15. Z

    The problem with learning by wrote and working without calculation

    Firstly I just want to say that working from tables and on site guides can be great for convenience, and this is good. But so often the very presence of these easy and convenient rules of thumb to comply with regulation may prevent a person from developing a deep technical understanding of why...
  16. S

    Spurs off Spurs on radial circuit

    So you can spur off Spurs on a radial socket circuit, is this because the cable is protected via a 20amp breaker at the board compared to 32amp on a ring?
  17. O

    The IET are really taking the pxss now!

    This months PE, page 38 is a full page advert for a new guide they have produced – “Guide to Consumer Units” So they write RUBBISH regs, that most of us think are knee jerk, and them they expect us to pay out more money on a new Guide they have written. They should be giving them to people who...
  18. P

    Ive booked the g59 course

    Hi all this is my first ever post so bare with. I'm currently qualified to carry out the 'Installation and Maintenance of Small Scale Photovoltaic Systems'. I understand this covers me up to 16A per phase. So far I only have a few domestic installations under my belt and I have been approached...
  19. M

    EMdrive funy tory NASA don't know how works bulb

    Few days ago Nasa published raport in 2013 Chine scientists also confirmed EMdrive ( Everyone understand that engine is moving but they not understand WHY and How )
  20. 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...
  21. 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
  22. 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...
  23. 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 ?
  24. D


    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...
  25. 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 &...
  26. 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...
  27. 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...
  28. 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...
  29. P

    partr p testing and documentation

    Hi Guys, I am changing a cu with a full test,the test certs say r1 plus r2 and r2,as i understand it you do a full r1 and r2 on all circuits,and also r2 on all circuits.also the r2 test,i understand its a continuity test on the cpc to a seperate earth to furthest point in circuit.Have i got...
  30. J


    need to join a competent person scheme but dnt kno who best to join? also is just 2391 ok or do i need 2392?
  31. C

    3 phase heater help needed

    There is a 12KW heater installed being controlled by a three phase thyristor control. There are 6 x 2kw heating elements and i am stuggling to understand the operation. There are two elements connected to each phase but then they are then all linked to a common bar on the opposite side of the...
  32. M

    commercial db numbering

    How do you number a DB ? is there a "universal" way to do it? ie 1L1L2L3 2L1L2L3 ....... running down the db or 1L1LL2L3 2 L1L2L3 1being left and 2 being on the right Odds down the left and evens down the right what about odds on the left up from the main switch there appears to be...
  33. W

    Fault Finding - Dead

    I apologise in advance if this has been posted many times by others :D Im after some help on fault finding for my AM2 exam. Apparently you only get an continuity tester and insulation resistance. Would just like to know some information on testing different circuits and how to locate the...
  34. P

    Shower tripping

    Hello I have just installed a new fuse board and when the shower runs the MCB trips within 20-30 seconds the ins rest is 1000+Mohms the ze is 0.54 ohms the shower is 9.5kw I know I nees a 40amp breaker but what I cant understand is why it was ok on a 30amp wired fuse before and it shouldnt...
  35. C

    JIB Electrotechnical Certification Scheme (ECS) jib card

    Hi All hope you can help with a little problem i have i have just applied for a new job put in my cv and they have e mailed me back saying that i need an Approved jib card.I was under the idea that if i had 2391 17th ed and was qualified to C Cert i didnt require a card. If i do need a card...
  36. M

    Basic Testing Help?

    Hi all, I got my C+G exam 1 exam tomorow and exam 2 a week tomorow. I have been working on circuits since September but I'm finding testing a little hard to get my head around? Can somebody explain in simpleton words the basic way to test etc; CPC Continuity Insulation Resistance Plus a...
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