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  1. 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?
  2. 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.
    • Buzz-light-bulb
    • Thread
    • building conduit roman steel steel conduit times
    • Replies: 21
    • Forum: UK Electrical Forum
  3. 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...
    • drjarmin
    • Thread
    • check electrician mcbs rcbo rcbos replacing times
    • Replies: 47
    • Forum: UK Electrical Forum
  4. 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.
    • Richard3009
    • Thread
    • fuse fuses primary roman times
    • Replies: 15
    • Forum: UK Electrical Forum
  5. 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
  6. GLENNSPARK

    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 ???????????????
  7. 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...
  8. K

    Security ?

    I’ve just had a security screen appear from nowhere. What’s gone wrong this time?
  9. 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...
  10. P

    rcds

    can 2 rcds on the same circuit cause problems
    • paul45
    • Thread
    • another failed rcd rcds series times
    • Replies: 9
    • Forum: The Welcome Forum
  11. 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...
  12. 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...
    • ck_shekel
    • Thread
    • earth roman system times tt system volts
    • Replies: 8
    • Forum: UK Electrical Forum
  13. 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...
  14. 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:
  15. 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...
  16. C

    Working through agencies?

    How fair is agency work? This is a genuine question. I started work for an agency. Its the first time I have done this. I dont get paid by the agency, but by a some organisation that calls itself my employer. So the electrical contractor pays the employment agency and the employment agency...
  17. N

    Generator Maintenance

    Hi guys, I'll give you a brief run down of the system before I go into the problem. At the hospital where I work we have two back up generators. They're rated at 750KvA. In the event of mains failure, they both start up same time, one generator will then connect to the main busbars, then roughly...
  18. D

    Pricing

    Hi guys, Just wanted to know what prices people are quoting for condition report's.
    • Dazzol2009
    • Thread
    • charge pricing roman times
    • Replies: 18
    • Forum: UK Electrical Forum
  19. BigSi

    Do you test every RCBO?

    I’m currently doing a job where I have to replace 20 MCB’s with RCBO’s in the main consumer unit of a public building. I was told by another colleague, that you only had to trip test one RCBO and to use this figure for the remaining 19? Surely this isn’t right, and you have to test the...
  20. imago

    So that's how you get the DNO to upgrade cables!

    Stone built (140 ish years old) end of terrace house with an old two wire onto ceramic doughnuts overhead supply. The DNO inspector came out to look at it and they're replacing everything from the head to the pole FOC. What caused such a remarkable event? I'm sure we all know how they like to...

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