Jump to content





Popular Content

Showing content with the highest reputation since 19/02/18 in all areas

  1. 5 points
    russia doesnt need to bomb us to cause chaos, they just need to turn off the gas
  2. 5 points
    I feel so sorry for that neutral bar. There it is, all dressed up, ready for the big day... sees the cpcs going in, thinks, "Here we go!" then... nothing. Realises it's the fag tray on a motorbike, the chocolate teapot, the number 9 on a microwave keypad. Poor neutral bar
  3. 5 points
    I will just politely inform you that DIY electrical work is still perfectly legal within the UK. Your above comment is neither helpful nor constructive, In the same way that a qualified car mechanic may give advice on a motor forum to a non-mechanic about doing some DIY car maintenance, it is perfectly reasonable for an electrician to offer advice to a non electrician. This is one of the functions of the forum. Doc H.
  4. 4 points
    Best man to describe this is..... Been looking for mine so I can get a free voltage indicator but cant find it!
  5. 4 points
    Plenty of hero's have raced to the bottom, and the winners always end up losing out, de skilling the job is not the answer by charging cowboys rates, if your a professional time served Electrician and good at your job you will always get work by word of mouth, I kind of get your point, but you will never win the argument, quite simply with the greatest respect to you, cheap invoices do not pay bills in this industry.
  6. 4 points
    No I wouldn't, this site holds itself as providing factual and honest answers. Electricians masquerading as "Part P" qualified aren't doing the industry any good, they are confusing clients and new trainees wanting to start in the field. How many people have you read, "I've just paid £xxxx for a Part P qualification" Me correcting your statement was not meant in any way to cause offence. Purely so that people outside the trade reading these (from google searches, other DIYers) get the correct information.
  7. 4 points
    Is that so.... Slight typo on Docs part there, the higher the potential difference increases the distance in which the electricity can jump. The more current involved, the bigger and hotter the arc produced is. Also once an arc is struck, higher current will keep the arc 'flowing' over a greater distance due to it being able to ionise its surroundings. Agree with everything else, for what it's going to cost. Get someone with suitable test equipment to diagnose the issue.
  8. 4 points
    One other thing to remember, is that based on 32A for 4 hours 365 times a year, a 10mm sq cable at 20Deg C will cost you 60-62 kWh of electricity in losses. This will increase above this though, because of the heating effect of the cable caused by these losses. If you use a 16mm sq cable the losses based on 32A for 4 hours 365 times a year would be 38-39 kWh, again at a cable temperature of 20 deg C. I don't have enough data on the install to correctly model the cable temperature, but bear in mind that energy will increase in cost, the current flowing through the cable will increase its temperature above 20 deg C, as its temperature rises the Joule heating losses rise, whilst 10mm sq is rated above what you are looking at current wise, look at the difference in cost of 10 - 16 mm sq now, look at the difference of 21 units of electricity now, annually and into the future, and see how much the payback would be on the larger cable. Plus you will have a lower volt drop and EFLI. Using an online "wholesaler" the 16mm works out £8 more expensive than the 10mm for 40m. 21 units @ what 15p/unit? £3.15 so payback in < 3years for fitting the larger cable. That's a very quick calc, and not looking at cable heating, so the payback may well be < 2 years. Your spark should be working this out for you when it comes to large constant loads, else you need to find another spark.
  9. 3 points
    In that case, each flat (MPAN) is it's own electrical installation and totally separate from all others, and thus must be bonded as required individually, to whatever exposed and extraneous conductive parts are accessible in the installation, or able to bring a potential into the installation in any way means shape or form, such as is required to ensure that an equipotential zone is maintained within the premises at all times, including under fault conditions, and that includes faults introduced into the zone.
  10. 3 points
    The bigger the better! ”Back in 2021 when the world had finished burning, it was thought that humanity had finally managed to make itself extinct. Little was known about the small group of electricians and associates who had survived the apocalypse in a bunker in northern Sweden, surviving only on beer and sheer stubbornness.”
  11. 3 points
    I can see this not having the outcome that the other bloke envisaged He WAS probably thinking he would get a nice rewire out of it instead he will doubtlessly have to double his toilet paper budget to account for the new orifice which he is about to have ripped
  12. 3 points
    Murdoch, I agree with most of what you have posted, the only thing is I think the moderator thing is a bit overplayed, I see where you are coming from. However, the Mods here are no more knowledgeable and influential in the industry than any other member, they are merely Mods to control the forums. In my opinion, domestic or not to attend a site to do anything for a charge in the region of that suggested is ridiculous. Also, the other arguments with regard to persons having less money to spend, well, yes they will because they are all being paid less, and the cost of living is going up, that is part of what the race to the bottom is. Margins are squeezed ever tighter, the massive players in the market don't and won't suffer, it is the small and medium sized guys that loose out. Bezos has just overtaken Gates, Maplin are gone, New Look are laying off, Toys R Us are gone, Tesco cutting back, Sainsbury's cutting back, Morrisons, a lot of this is down to cut backs in spend, a lot is to do with people simply not shopping, they are buying online. Just look at the sites where there are reverse auctions for work FFS who wins there, certainly not the consumer, how can they, short term yes, but something has to give, and it is, product quality has dropped because people won't pay for quality, but they still want the same quality to last just as long. Training has been dumbed down so that the market is flooded with part qualified people so that the competition drives prices down, no-one wins, because everyone suffers, the only ones to win are the large corporates. They won't cut their profit margins, they will shed people and assets to keep their money coming in. Just look at the directors of Carillion if you don't believe that, their pension fund is fine, screw everyone else mate we're OK. That is what is wrong with the UK, there is a cancer of greed amongst the large corporates, and the Government don't care about the people at large, no Government does, no matter what colour rosette they wear. Individual MP's may care, enough to persuade you to vote for them. Once they are there, they all eat out of the same trough of our money. Don't believe me? Think about this. A comment I made to a friend who works for a train operator up in the South East. I am amazed that in this day and age, people are left on a train marooned for 8+ hours overnight without heating and sanitation, or is it all Radishes? Surely in that time they could have escorted them off the track and into a bus or something? I don't know much about railways really, but that just seems ridiculous? To which he agreed and cited that there was a massive failure across the network affecting loads of routes due to lack of maintenance of track equipment due to costs (probably), and the fact that the whole industry is afraid of criticising the Government. To which I replied: TBH mate, I think it goes further than that. I think it shows how much contempt, lack of compassion, and how little the general public actually mean to these large corporates and the Government. The public are just an inconvenience there to fund their drug and alcohol fuelled binges, pay for their holiday homes, bonuses, and lavish lifestyle, nothing else.
  13. 3 points
    I remember it as .....most DNOs stipulated meter tails up to 3 mtrs long could be protected by their cut-out fuse . Longer than 3M a sw/fuse should be fitted to discriminate over theirs . Then with the 17th we were blessed with fitting an overall ( & unwanted) RCD depending on the install method of the tails. Eventually there will be so many regs prevailing that you won't be able to do anything . Houses will be wired in surface mounted 25mm steel conduit radiating from a 4 X 4 steel trunking from end to the other . Ring mains will be banned ..all sockets will be 60A Commando radials wired in 16mm SWA also surface ...in case someone wants to to do some arc welding in the house . Consumer units will made from 1/4 " steel plate with welded seams
  14. 3 points
    I would more than likely be going with 32 amp socket with a 32 amp OCPD. Although we should be using the declared nominal voltage of 400v this calculation throws us slightly over the 32 amp rating of the socket. If we use a more realistic 415v then the load will be 31.99 amps. Caveat being that voltage is actually measured on site to confirm it is suitable. I would then have to consult the manufacturers instructions but at a guess this would be a resistive load, possibly a bridge rectifier, so potentially a B curve MCB of Gg fuse. As this is a modern charger I would hazard a guess that it would more than likely be a soft start but only the manufacturer can confirm. What cable installation method is to be used? I would also need to know supply characteristics and expected Ze for the installation and also any applicable Zdb and voltage drop. Only then can I select my cable. A lot of people tend to forget to account for volt drop when using distribution circuits, I've only recently started placing a calculated volt drop note on the DB circuit chart, I would use a label but this would only annoy Tony...
  15. 3 points
    Thanks a million guys, you are all so sweet, i will and i want to read carefully all what you kindly suggested me, word by word, and check out all the links you kindly gave me, because i don't want to betray your kindness you know, at the same time i could also fortunately educate myself and learn something new and unknown. That is interesting. I would say i have fallen in love with this forum, because of you guys. By the way, i think my life's worth a T110, too. Have a nice day! Joshua
  16. 3 points
    The neutral bar could be reclassified as a spare screw holder for the Earth bar, granted some relabelling will be required.😀
  17. 3 points
    Whatever you think is a good idea or not is irrelevant, The fact that the forum has a DIY Q&A section should make it quite obvious that we offer guidance and advice to DIY (ergo unskilled, untrained etc persons). It is not here for DIY'ers to ask for advice off other DIY'ers! Even work that is Part-P notifiable can be carried out by DIY'ers providing certain procedures are followed, (go and double check approved document P if you didn't know). For the record Part P building regulation has been around for over 12years, you can rest assured we have sufficient knowledgeable and experienced forum members, to comprehend the full legal obligations and requirements of this building regulation. There may well be other forums that are totally dedicated to electricians only talking to other electricians, this one is not, it covers the full broad spectrum of electrical work whatever its context. Doc H.
  18. 3 points
    not quite sure how that could cause myths to emerge or how broadcasting it thoughout the UK can stop myth happening. the easiest solution to stop these 'myths' would be to make the regs clear and without any ambiguity
  19. 3 points
    Been away for a while, firstly I took early retirement but then decided to work again, however it is 4 on 4 off, and the internet was getting too much so I have been on very rarely, as you know our site EC is struggling and it is going to close, I don't expect to post much to be honest but promise to be on my best behaviour and only post constructive content when I am on, I wish TEF the very best of success for the future, the site looks fantastic and I like the look of the new software, I am into Caravanning and Target shooting with Air rifles these days and do not get too involved with Electrical content, however with the 18th on the horizon I am reading the content of these sites a bit more of late, I have noticed a few old friends here and hope you are all okay, nice to be here again chaps
  20. 3 points
    I’ve had my feet under the table here for a good few years now. Before EB went down I managed to rescue most of the industrial stuff, it’s now in Knowledgebase. Hopefully more of the old crew will find their way here.
  21. 3 points
    Evening all, I am new to this forum, and have made a few contributions, and had a good look around. I dont want to reply to old threads so i have started a new one about the new qualification I taught the old 2391, then the 2394 and 5, and have now started with the all new 2391, so here is an overview and some advice for anyone who is going to take the plunge. 2391-50. Initial Verification. 1 short written exam. 1 practical assessment. 1 online mulitple choice exam. 2391-51 Periodic inspection and test. 1 short written exam, 1 practical assessment in 2 parts, a visual inspection from a selection of photographs, and a full practical testing assessment with 3 faults to find. 1 online multiple choice exam. 2391-52. Combined inspection and testing. 1 short written exam, 1 practical assessment in 2 parts as per the 2391-51. 1 online multiple choice exam. The online exam gives an instant pass/fail. I dont know what the pass mark is, but i have seen a fail at 76%. All the passes i have seen have been 91% or higher, but i haven't seen any results between 76 and 91. Your assessor will tell you immediately upon completion of the practical tasks if you have passed or failed. The short written exams are marked by the assessor who has to mark them against strict marking criteria , and he/she will tell you if you have passed or failed, the pass mark is 100% All exams and assessments are open book. Both exams require you to reference BS7671 to find some of the answers. Suitable revision material; BS7671, GN3, OSG, GS38. An overview and familiarity with BS7671 and the OSG will be enough, but an in depth knowledge of GN3 and GS38 are a must. Before considering the course, you must be familiar with inspection and testing, you must also have a good knowledge of basic electrical principles, such as ohm law, resistance of cables and what can affect it. Contrary to popular belief these open book exams are not easy and anyone who takes the course thinking it will be a walk in the park are in for a rude awakening. Comments i have had from candidates on my courses who have tried and failed at the old closed book 2391,2394 and 2395 have said things about the new version that i cannot quote on here, but they are telling me that it is far more difficult especially when they have had to reference BS761 to quote reg numbers and also needed to do a few calculations, so you have been warned. C&G have put some sample exams on their website which are accessible to all along with marked examples so you can see how you fared, but these are a lot easier than the real thing, especially the multiple choice ones.
  22. 3 points
    no idea, could be to show its fitted by DNO and therefore non-flammable, where as the one fitted by a spark will self combust as its not amd3 compliant. which is a bit odd really, since part P says you work to amd1, so you could fit a plastic...
  23. 2 points
    But in the process of changing the consumer unit he should have done a lot of testing, including the earth. If nor he was a cowboy. An electrician would have tested the earth, not just connected it and hoped.
  24. 2 points
    Hilmore conduit bender , might be tubing to do ....SWA cable drum jacks & spindle ...might be armoured to pull in .....steps , ladder .
  25. 2 points
    It has arrived..... Choo tango'd choo!
  26. 2 points
    At the risk of inciting our resident Legal Eagle we are sat on 100’s of years of coal. Coal that is now lost to us without massive investment to recover it. With this coal we should be able to export power. The technology to burn coal cleanly is available, expensive I know but preferable to nuclear power plants built by the Chinese.
  27. 2 points
    GM replies to Bill Gates At a recent computer expo (COMDEX), Bill Gates reportedly compared the computer industry with the auto industry and stated "if GM had kept up with the technology like the computer industry has, we would all be driving $25.00 cars that got 1,000 miles to the gallon." In response to Bill's comments, General Motors issued the following press release - If GM had developed technology like Microsoft, we would all be driving cars with the following characteristics - 1. For no reason whatsoever, your car would crash twice a day. 2. Every time they repainted the lines in the road, you would have to buy a new car. 3. Occasionally your car would die on the freeway for no reason. You would have to pull over to the side of the road, close all of the windows, shut off the car, restart it, and reopen the windows before you could continue. For some reason you would simply accept this. 4. Occasionally, executing a maneuver such as a left turn would cause your car to shut down and refuse to restart, in which case you would have to reinstall the engine. 5. Only one person at a time could use the car unless you bought "car NT", but then you would have to buy more seats. 6. Macintosh would make a car that was powered by the sun, was reliable, five times as fast and twice as easy to drive - but would only run on five percent of the roads. 7. The oil, water temperature, and alternator warning lights would all be replaced by a single "General Protection Fault" warning light. 10. The airbag system would ask "are you sure?" before deploying. 11. Occasionally, for no reason whatsoever, your car would lock you out and refuse to let you in until you simultaneously lifted the door handle, turned the key and grabbed hold of the radio antenna. 12. GM would require all car buyers to also purchase a deluxe set of Rand McNally road maps (now a GM subsidiary), even though they neither need nor want them. Attempting to delete this option would immediately cause the cars performance to diminish by 50% or more. Moreover, GM would become a target for investigation by the Justice Dept. 13. Every time GM introduced a new car, car buyers would have to learn to drive all over again because none of the controls would operate in the same manner as the old car. 14. You'd have to press the "Start" button to turn the engine off.
  28. 2 points
    never underestimate who you are working for, I almost feel sorry for this bloke, I think he is about to get an education in electrickery,,,,,,,
  29. 2 points
    No test certificates issued as yet Rob. However I have Sidewinder on side and I would hate to see the outcome when he has finished with him lol
  30. 2 points
    Exactly the same thing happens when designing safety systems for say a chemical plant. You could eliminate 99.9% of the risk of an explosion or process malfunction that could potentially kill somebody. However this is going to cost £50,000,000.00 to implement. However, they could just eliminate 95% of the risk with only £1,000,000.00. Which do you think is going to happen? I've made these values up by the way, but it's what I work with on a day to day basis. It's a little bit more complicated than that but you get the idea. An yes, there is a formula for working out how much a persons life is worth. Clearly this example is far more extreme than a domestic situation, and can't really compare. The regs are worded almost the same. Risk has to be brought down to an acceptable level. An acceptable level isn't a set figure. It's got to meet a minimum, but no absolute.
  31. 2 points
    This is an old chestnut. As I recall an electrician (other than a DNO official) can not cut off a supply or parts of an installation as they have no legal right to do so. They can warn or issue an advisory danger notice, it’s then up to the householder to follow up on the warning. Cutting the cables sounds like criminal damage to me. PS. You don’t want to be there if a DNO engineer declares an installation unsafe, they turn in to Hitler’s twin brother.
  32. 2 points
    Going to have to be pernickety here: You got a PEFC of 1.86kA and PSCC of 2.05kA and therefore your PFC was 2.05kA.
  33. 2 points
    Whilst that may be the reality, is it the truth? i suspect that there are many within the corporate business that live the same as you and I, the failure and the greatest failure in this so called democratic country of ours and possibly the entire world, is that the many are ruled, led by the few. WhIch is exactly what we are programmed to accept as the norm from childhood and just because it's the norm doesn't make it right. I just wonder when the many will take hold of their lives and actually take back the control, remember this, they only have the control because they control the money. What if the masses stopped accepting money, sounds ridiculous, but reality is if the people come together then you'd realise we don't need money.. let's face it they are already seeking alternatives to money as we know it, is that because they need to stir it up to stop us taking control?. without the control of the money they are no more than us.
  34. 2 points
    Was talking to a former collegue they are having a terrible time with a load of wireless reed switches / door contacts we installed last year they are either bricked or the batteries have gone, costing the company a **** load to put right! Tomatoes shouldn't have bought a load of cheap **** from China!
  35. 2 points
    ali1, i really can understand your idea of...............well it only needs a siren, so its £100+ but it will be worth it, and I will be happy. I was like that with some lights I had, it was a case of I must have them, even though there is better i WANT these ones. I got the lights in the end, they lasted for only a few months as they were not as good as made out, so I then got some much better ones. Point being that I could have saved a lot of money If I had of got the 2nd lot in the first place, but, no, I wanted the 1st ones because they looked good. If only I had of thought about it, i need not have wasted money. From your perspective: I have already told you the ext siren was an afterthought and not reliable, a couple of places I looked at list them but have 0 stock, another says discontinued, assuming you can get one, You still need to know how to add it to your system (if it will accept it) You do not know the engineers code You are giving your self work as you will have to change the batteries every 2 years Its up to you what you do, but I would still opt to install a wired alarm from scratch, it will be cheaper in the long run and cause less hassle. Good luck.
  36. 2 points
    Can't remember if SBS Daves terminal screws are made of cheese (probably not) but I know that most manufacturers could do with a spare screw or ten! WTFudge is the point of a torque driver if you can shear half the head off @ 2Nm...
  37. 2 points
    Doc H. Try getting the garage to come & MOT your car on your driveway, then see what the cost is. IMHO, that is a better comparison.
  38. 2 points
    it is 2018, the race to the bottom should have passed by now, 50 quid plus vat for the 1st hour and 35-40 per hour plus vat after that at least, a MFT costs 800 quid these days, well for a good one, lets not forget liability insurance, 6-7 k a year running a van and the stress of working for the IR. Lets also not forget a lot of guys spend at least 5 years training, and my vast experience working in this industry has taught me one thing, there are not many good sparks about today due to short courses with lack of hands on training.
  39. 2 points
    Quite, same day call out for me would be circa £110 but that does include the minimum on site charge of 1hr, like it or not.
  40. 2 points
    C2 for me, you will be potentially exposed if you remove the fuse for inspection or replace a blown wire etc
  41. 2 points
    It wasn't the last thing you were threw out of for being disruptive Electronics.... I'm sitting in the house ordering transorbs from RS Components as we speak. I was drawn towards politics and history at school. I managed 100% in one of my A-level modules
  42. 2 points
    I hated English literature and language, I got thrown out of both for being disruptive. 20 years later I was registered as a publisher by the British Library and ISBN. Funny old word
  43. 2 points
    Good job the UK doesn't have many electric cars needing charging!
  44. 2 points
  45. 2 points
    That all depends who you're talking to. Some DIYers find it easier to understand layman's terms
  46. 2 points
    There is no such thing as a part p person. Part P, is a section of the building regulations.
  47. 2 points
    I 've spent my working life trying to support apprentice's rights & conditions , mostly when they were used solely as cheap labour .. stuck on carrying out menial tasks and work that a labourer could do to the detriment of his training and education . Quite often apprentices would be approaching the end of their term and had not received experience in all the fields we cover ...I frequently championed their cause , not that most employers were really interested . ( Probably thought I was a tit. ) However if that qualifies me as a Tit ...I will adjust my bra and butt out .
  48. 2 points
    ^^ nice to see you have such little faith in trades people. We are mainly self employed, have business overheads, homes and families .... So work has to pay, as full time charity work isn't an option.
  49. 2 points
    How did we go from a nation of shop keepers to a nation of shoppers? We being the masters of our own demise need to look at things differently, for decades we have been addicted to cheap credit to buy cheap sh1t from China. Now we need to look at not spending money we don't have and making home grown quality items that need not be binned after the first use. The vat went down to 15% to stimulate growth during the 2008 crash.
  50. 2 points
    Just like me, I fain no knowledge of domestic things. In my home village I did some unpaid work for both the CE church and Methodist chapel, it’s my civic duty to do so. Next thing I’m getting phone calls from all over the village for domestic jobs because I didn’t charge. The vicar and minister were giving my phone number out to all the pensioners. A very ungodly conversation ensued with both reverend gentlemen.