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  1. 5 points
    russia doesnt need to bomb us to cause chaos, they just need to turn off the gas
  2. 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.
  3. 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.”
  4. 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.
  5. 2 points
    Hilmore conduit bender , might be tubing to do ....SWA cable drum jacks & spindle ...might be armoured to pull in .....steps , ladder .
  6. 2 points
    Hard hat, vis and boots- for work cycle hat, vis and shoes-for getting there and back. Packed lunch and thermal cup for that mid morning coffee. Notepad and pen.- needs for doing the puzzles in the site paper. Puncture repair kit-cos you never know. Your name on all tools and belongings- feel free to label your coat if you like. Crumbs it’s like sending the boy to school on his first day!!!
  7. 2 points
    It has arrived..... Choo tango'd choo!
  8. 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.
  9. 2 points
    One score point to Andy. This country is far to reliant on fuel supplies from abroad. Upset any of the countries we rely on and we’ll be looking for this place:
  10. 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.
  11. 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.
  12. 1 point
  13. 1 point
    I have a head full of useless things like that, I can never remember my wedding anniversary though...
  14. 1 point
    might not be that simple... if the board has some non-RCD circuits (common pre 2008) then its still potentially dangerous as an earth fault can melt wires before tripping any breakers. id be getting the wiring checked fully since you said there was a new board yet something basic like this wasnt noticed at the time, what else is wrong that you dont know about?
  15. 1 point
    Cardboard??? Failing that? Some perspex and some trunking ?
  16. 1 point
    Its <10 ohms combined for LP rods.
  17. 1 point
    As I said each supply with its own MPAN needs to be completed in accordance with BS7671. The LPS must be bonded to the earthing and bonding of the LV installation in the building. Personally I would do this at the "master" supply, you mention shop I think, at ground level? I'd do it there. This all needs to comply with 62305, you'll need earth rods down < 20 Ohms I think from memory, but you need to check. There are 4 parts to 62305, £306, £318, £254, £254, in no particular order! So that's over £1100!!! Unless you get BSI member discount. On top of this, if you have an LPS, you really should fit surge to all incoming lines, that's electric, phones, broadband, basically, anything conductive entering the building. Nothing will protect against a direct strike, it's indirect strikes, and conducted emissions you are trying to mitigate against. Look to 7671 regs below & GN8. 411.3.1.2 443.1 534.2 541.3 542.4.1(iv) Appendix 16 GN8, Ch3, 5, & 6 EN 62305 parts 1 -4 & PD 62305 which is just the flash density map.
  18. 1 point
    The only point of connection with the LP and the installation is at the MET. TBH it just makes a better earthing system and will lower the EFLI readings when tested. If the building ever gets zapped the duration will be short but very high and will more than likely really screw things up. TBH I would be more concerned about transient voltages from strike further away than direct building strikes, this is where the SP really comes into play and breaking the installation down into zones. People tend to forget that all service points of entry into the building need protection, from the BT lines in the ground to the TV antennas on the roof. Likelihood of a strike, direct or indirect, is extremely slim, I've been to thousands of telecoms masts across the UK and only seen one damaged from a direct which fried all the earthing and killed the fire alarm. All other atmospheric events have been transient voltages from strikes further away, one site in particular has been hit three times but the customer refuses to fit surge protection as its cheaper just to replace rectifiers. Anywho, beer to drink...
  19. 1 point
  20. 1 point
    We refurb'd our bathroom a couple of years ago wife didn't really fancy a Chrome shower.......fancied a sort of Gold coloured one just saying we bought a chrome one in the end
  21. 1 point
    Sharpie ... is there not a design element on this project ? A huge amount of our work in the past was under the design of local consultants and such things are sorted by them , as you know . They don't always get it right . We did a major referb on a bank ....consultant specified a new mains panel in the basement ...the main switch being a 200A TPN 100mA RCD I went there to find a fault on a door heater , suspected a phase was out , put my test lamps across blue phase & earth and the whole branch went off ....staff into "Bandit" mode ...police cars screaming up to the door.
  22. 1 point
    Ah well, that's where you are slightly incorrect(ish) beach Donkeys have to have an MOT from Mr Chinnery the Vetenarian every year. They then have a ID number branded onto a hoof which grows out after about 12 months. BUT it may be the same number on each donkey i.e. The YEAR number so this may not help
  23. 1 point
    No parking Eh! How about a train of donkeys to carry all this stuff ? You could park them outside ........as far as I know they can't stick a parking ticket on a donkey 'cos he won't have a number plate .
  24. 1 point
    @Manator could you just not fix the circuits yourself and chalk it up to experience. I doubt the old granny wants her new kitchen pulled out to try and prove a point.
  25. 1 point
    But if you get too carried away he might need one of these https://www.gumtree.com/vans/london
  26. 1 point
    M3.5/4 rethreaders spare hacksaw blades snips with a cutter that shears M3.5/4s a few HSS bits stepped cone cutter ARMEG M20-25 holesaw Croc clips for T 1000 and spare battery head torch and batteries in MY case 2 pairs of reading glasses piece of metal,coat hanger ....I have TWO full Super Rod mega sets and STILL use a wire coat hanger occasionally
  27. 1 point
    Don't forget the genny for the kettle
  28. 1 point
    Have you missed the bit where the duck says he’s going to cycle??? Perhaps his mate the carrier pidgeon would drop his tools there for him
  29. 1 point
    Thread cutter, for those knackerd back box lugs. A few Wago's to make a temp joint to bell a cable out in case you need to identity which is which in a multi gang light switch, with 10 unmarked T&E's stuffed in it. Doc H.
  30. 1 point
    @Manator your email is a little confusing, as I'm unsure who it has been sent to, and who it has been forwarded to, but, If this was MY daughters MiL then I wouldnt be making suggestions, I'd be hammering the dick that done such ****, my first impressions are that it was an 'installer' rather than an electrician that performed these actions
  31. 1 point
    Standard hand tools, impact or screw gun, possibly a selection of spanners 10,13,17mm, small hack saw, tape measure, pens. All will fit in a back pack, I have to park away from site and just carry a tote bag, similar scenario.
  32. 1 point
    Get a rack and panniers for the bike. And a bloody good lock.
  33. 1 point
    And we all know there'll be half a dozen things you didn't bring .
  34. 1 point
    I did three years of apprenticeship with the electricians here before going into contracting . Spotted this on tinternet. Associated with Hardy Spicer making prop shafts , rear axles and the first universal joints . Naturally all gone now . I was mainly in the Cold Extrusion not the Drop Forge , those hammers were scary.
  35. 1 point
    Plenty of earth sleeving, longer screws ................
  36. 1 point
    https://www.screwfix.com/p/stanley-fatmax-backpack/8649k Andy
  37. 1 point
    hammer & chisel to remove the plaster from boxes after mud slingers have been apart form that, usual cutters, drivers etc
  38. 1 point
    Genius with a sense of humour! RIP. Doc H.
  39. 1 point
    Just seen the SI post on 18th edition for a early bird price of £85.50- really normal retail price £95. I could save a lot more money if they didn’t change their bloody minds every couple of years. Perhaps we don’t need a change of regs as much as we need change of those in charge of the industry.
  40. 1 point
    I agree with that . How does expense compare to being at the mercy of unstable powers to supply energy. When my site closed there was still millions of tons of high grade coal left to be extracted at an economical rate . The communities were thriving and the local towns high streets are now shadows of what they were. Even if the mines were running at a a loss they gave the local community dignity. Thousands of men went to their grave having never worked again, and it cost a fortune to put them there.
  41. 1 point
    we should have our own people building our own nuclear stations
  42. 1 point
    They weren’t silly were they, we are just plain stooopid. Fancy having to rely on others for your essentials.
  43. 1 point
    Dust When installing electrical equipment and wiring, electricians cut into many different materials using a variety of drills, angle grinders, saws and multi-tools. Each time, they generate dust – and none of it should ever be thought of as harmless. We would all avoid breathing in something like asbestos, if we knew it was there, but danger lurks in many everyday materials. For instance, concrete, stone, brick and slate all release silica dust, which can irreversibly damage health and shorten lives. Respiratory diseases caused by unhealthy working environments kill around 12,000 people each year in the UK, according to a 2017 HSE report. They include conditions such as chronic bronchitis, mesothelioma and even cancer. Today, a staggering total of 147,000 people suffer from breathing or lung problems caused by or worsened by work – and about 18,000 new cases are added annually. But don’t imagine that a dust mask is the answer. A PPE (personal protective equipment) approach should be the last resort – used only after the better safety options have been exhausted. If dust can’t be avoided, it should be removed close to its point of origin using a vacuum cleaning system with the appropriate filtration level. Bosch has developed specialised cleaners for every situation, often building in automatic filter cleaning and other convenience features. Cleaners in the Bosch Click & Clean range can be directly connected to compatible power tools for immediate dust removal. Some tools, like the Bosch GBH 18 V-26(F) Professional Rotary Hammer Drill, can even be fitted with an integral dust extractor. This compact unit becomes part of the tool, simply slotting into place when needed. Bosch solutions also include hollow drill bits, through which dust can be extracted, and angle grinder dust extraction guards with built-in vacuum cleaner outlets. A recent focus group with electricians, conducted by Bosch found that dust is a hot topic. When asked what features could make their lives easier, dust collection on cordless tools was a key finding. Vibration Looking at the types of tasks they have to complete, it’s clear that electricians are amongst the two million people in Britain estimated by HSE to be at risk from hand-arm vibration syndrome (HAV). Nerve damage builds up slowly but eventually becomes permanent and leaves sufferers unable to work. Vibration white finger and carpal tunnel syndrome, which are conditions related to HAV, were cited in 695 new Industrial Injuries Disablement Benefit claims in 2016. Effects on power tool users depend on how strong the vibrations are and how long they are exposed to them. The maximum length of time for which a particular tool may be operated safely each day can be worked out with a useful calculator on HSE’s website. Reducing vibration, to extend that safe time, has been a key design aim for Bosch. Vibrations can be dampened – and comfort improved – through anti-vibration handles. The Bosch rotary hammer is one of a number of Bosch tools featuring advanced Vibration Control. Unseen obstacles When a drill bit, grinding disc or saw blade is jammed by something hidden in the work material, rotation instantly transfers to the tool itself. This is known as ‘kickback’. It can result in arms being twisted, torn and broken. Even worse, it may redirect the tool’s cutting edge onto the user. Before working on any material, scanning it for unseen obstacles like nails, pipes and cables is a good precaution. Even so, there may still be deeply concealed obstructions and resistant materials. For immediate protection, Bosch offers Electronic Rotation Control (ERC), or KickBack Control, whose acceleration sensors trigger an instant power shutdown when any abrupt blockage is detected. So far, 25 Bosch Professional Power tools have been equipped in this way. Examples include the rotary hammer already described, as well as the GSR 18 V-60 Professional FlexiClick Drill Driver and the GWS 18 V-125 SC Professional Angle Grinder. Safeguard your greatest assets Professional electricians should never forget that their health is their capital – so it needs to be protected. Employers supplying teams with power tools should also take care. Their workers are their greatest asset and they are legally responsible for safeguarding them from all of the hazards highlighted here. For more information visit: www.bosch-professional.co.uk Brand: Bosch Professional Topic: Testing Tools and Equipment Power Tools Thumbnail image: Teaser: An electrician using power tools faces daily health risks which can be overlooked or underestimated. Eric Streuli of Bosch brings these risks out into the open and explains how tool design and technology can make the trade professional’s life safer without slowing them down. Type: Technical Articles Keywords: health & safety, power tools, Bosch power tools, Bosch, Bosch Professional, angle grinfer, rotary hammer, hammer Main image(s): Links Powerful versatility: Starlock accessory system With the completion of its latest range of oscillating multi-cutters, featuring the Starlock 3D accessory interface, Bosch says it is now time for trade professionals to move away from OIS. Bosch connected tools: The future has arrived Bosch connected tools are now on the shelves, saving time and effort – and future-proofing businesses Powerful versatility: Starlock accessory system With the completion of its latest range of oscillating multi-cutters, featuring the Starlock 3D accessory interface, Bosch says it is now time for trade professionals to move away from OIS. Date of publication: 13/03/2018 Target group: Voltimum View the full article
  44. 1 point
    I have had an immediate reply to my email, the loss adjuster is visiting the builders offices tomorrow to discuss reinstatement to the circuits. He has accepted that the actions of the electrician is a concern to all parties.
  45. 1 point
    thats a nice hole he's dug. wonder how deep it will be at the end? so what reg has he clamined it didnt comply with and was dangerous enough to justify criminal damage of disconnecting and cutting the cables he had nothing to do with? maybe the circuit had live exposed wiring in the kitchen where he removed part of the circuit?
  46. 1 point
    Disconnecting is one thing. Vandalising by cutting the cables is another thing in its entirety. For all we know it could just be a couple of faulty accessories to blame.
  47. 1 point
  48. 1 point
    With a 'carbontakerouterbulator' available from Russ Andrews and the Snake Oil emporium
  49. 1 point
    It's not a fact. Where as the redundancy in an all rcbo board is significantly better than a split board. It's only a domestic installation. Redundancy can't really come into play. All the statements of someone upstairs and loosing the lights because something unrelated trips. The same happens if there's a power cut, or the main fuse goes. Using this argument. Even a fully populated rcbo board wouldn't be compliment unless you had UPS backup for the house. Or an auto changeover back up genny. Just in case the house suffers a dno related fault.
  50. 1 point
    A simplified description of commonly used Earthing systems in the United Kingdom, along with a basic diagram of the most common, ** note, :- extending the PME system outside the equipotential zone has been OMITTED from the diagrams as it is considered IMHO to be outside the remit of a simplified description of earthing systems and is dependant on a number of varying factors that could only be established via a site visit and survey, and would also be dependant on the electrician concerned being wholly conversant with the inherent risks etc thereof and understanding the principles of earthing systems and how they work and intermix with each other. TNC-S and PME The subtle differences. TN earthing systems in the UK are always earthed at the supply transformer, a TN-S system utilizes a separated PE conductor throughout its length, The TNC-S system utilizes the neutral conductor, PEN , which is earthed at the supply transformer, and then separated at the consumers point of supply. A PME system, utilizes the neutral just as the TNC-S does, but is earthed at intervals throughout its length, and more importantly, to be fully PME, should be earthed at point of, or just before the consumers point of supply. PME earthing is still an ongoing upgrade to the older TNC-S earthing system, the supply companies still have some time to bring all TNC-S systems in line (2012). The debate would be, if no earth electrode is supplied at the end of the distributors cable, does it still comply with PME? To understand this we would have to know why this last earth electrode is important to the integrity of the true PME. Broken neutral on TNC-S systems. The fact is, whilst possible, this is still a rare occurrence, however it should not be excluded, indeed the supply companies take the possibility very seriously, otherwise why would they be converting to PME. In the event of a broken neutral the fault paths will have no defined route, and will migrate to and from all users on the same system, this can give rise to dangerous voltages on the neutral conductor. One of the main protective conditions of this type of fault is the correct bonding within the installation, however this is becoming near on impossible due to the utility companies now supplying their services with plastic pipes. There will always be a leakage to earth, to some extent, but not enough to clear most dramatic faults of this nature. PME systems are designed to lower this possible fault, and to provide at least a connection with earth, at one, or multiple points. For this reason it is important to have an earth electrode close to, and not shared with another installation, if designed this way, any neutral faults will always have a path to earth, and whilst the fault can still be shared, the voltages on the neutral will not be allowed to rise as high ,with multiple earth electrodes at each installation point. Using PME to extend the equipotential zone. It is possible to extend the equipotential zone of a true PME system, with correct design, and can sometimes be confused for a TT system. Remember PME stands for Protective Multiple Earthing. The neutral conductor is still connected throughout the system, however earth electrodes could be introduced a various points within the installation, and connected to the main earthing terminal at origin, or separated to provide protection in those circuits, providing multiple points of reference to earth. This type of arrangement must be fully compliant with all regulations, and the earthing within the installation should be verified to ensure continuity throughout.