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times

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  1. S

    Book times for chopping boxes in walls

    Evening, Anyone know the book/industry times for chopping 1g & 2g 35mm back boxes in concrete block and then fixing . All using power tools. I know how long it would take me! But will be subbies... My luckins doesnt list it and my old spons only has chopping by hand times which I reckon my mum...
  2. G

    Two submains from meter

    Hi, The property in question has it's meter box on a garden wall in which there is: 100A cutout --> Meter (Rated at 80A) --> Isolator --> Henleys --> Two 60A fused isolators. Each fused isolator supplies an SWA submain, one to a house, the other to a workshop. My question is shouldn't there...
  3. T

    New job option available, unsure wether to jump ship?

    Alright guys, I wondered if I could get anyone's thoughts on what it's like working on large sites such as railways, airports and civils etc? I don't really know anyone thats been involved in this line of work. I am currently a subbie mate/trainee for a medium size commercial firm who mainly...
  4. A

    RCD tripping times at 1x and 5x

    I understand that when carrying out RCD testing an RCD should trip within 300ms at 1x and 40ms at 5x but is it common that on occasions for the RCD to trip quicker at 1x than 5x. I never had it occur personally. I am just looking at some old certs and on some circuits the RCD is tripping...
  5. A

    steel trunking and earthing straps

    Do you know if its sufficient to only have earthing straps on one side on steel trunking or is it required to put them on both sides?
  6. B

    Steel conduit

    How's this for a means of earthing this steel conduit is acting as a tt arrangement, although brilliant ze readings, 6.41 ohms 34a. What do you all think to this.
  7. D

    Sanity check - replacing MCBs with RCBOs

    Hi All Wanted to get feedback on this idea. I have 3 fuse boards which trip frequently whenever there is a lightening storm nearby. My electrician friend has suggested he swaps all the MCB's with RCBO's so that individual circuits trip rather than the whole board. Each board currently has a...
  8. R

    750kva on 200A primary fuses

    11kv/440-750kva 3 phase tx on 200A primary fuses, spotted this at work, whats the max current per phase you can draw on the secondary without rupturing the fuses.
  9. S

    100a jsu fuse required asap

    Hi guys Need 100a jsu fuse asap if anyone near Manchester has one please pm me. Many thanks Paul
  10. whinmoor

    Summer Pricing

    Just received from a potential customer who is playing us off against another company whose advertising says this. I'm not keen on competing in the race to the bottom. 14 TRINA 270 WATT BLACK MONO PANELS 3.78kw SYSTEM FOR ONLY £5,500 FULLY INSTALLED WITH FREE GEO MONITOR OR 16 QCELL 250 WATT...
  11. G

    minimum requirement for scam/racket membership

    so...lats take Napit for example: so if its a minimum of level 3 standard now: NAPIT `2391`...is level 2 ???????????????
  12. M

    Generator connection

    Hi All I was called out to a house today who's meter had been removed by the electricity board as they had been tampering with it. They wanted to connect a generator to it and no longer use any of the suppliers. As there will be no switching between supplys, I presume I no longer need to...
  13. K

    Security ?

    I’ve just had a security screen appear from nowhere. What’s gone wrong this time?
  14. edexlab

    Industrial controls courses

    I've previously asked this in the Course feedback section of the forum, but due to a lack of response I thought I'd appeal to the masses! I've been looking at various "hands on courses " for Industrial ie controls , as upto now I've not had much contact with this type of work, I've done plenty...
  15. P

    rcds

    can 2 rcds on the same circuit cause problems
  16. E

    Lister Petter Generator

    Guys, looking for a bit of help with a Generator. My old man has some land with a small workshop in the middle of nowhere. He's bought a generator previously used as backup for a vets. I'm putting it at about 20-25 years old, it's lister petter and thats as far as i've got with it. Apparently...
  17. 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...
  18. D

    Modular Wiring Installation Unit Hour

    Hi All, I am currently tendering for a new build office block which is to be a modular wiring plug and play installation on all the floor plate areas, I currently use EES data for estimating and we find that their unit hours are acceptable for sockets,conduit etc however there are no products...
  19. GMES

    In defence of the short course trainee part 2 Marvo

    Only kidding, as it been a week already :rofl::rofl::rofl::rofl::rofl::rofl::rofl::rofl::rofl:
  20. joel89

    Schneider Zelio Programmable Relay's

    Hi has anyone ever used these before and the software? We usually use allen bradley micrologix or control logix, but for a small job I am doing I have been told to use these, it is for a forge I am building a 400amp inverter panel for a large motor turning a big crank, all the zelio is needed...

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