roman

  1. J

    MCCB incomers on paneboards

    Hi I have a question which I am sure can be answered by the chaps on here in seconds. Why do panelboards often have MCCB's as incoming devices over isolating switches? I understand this can be useful if the PFC is high at the board and an incomer like this can protect outgoing devices. Is this...
  2. S

    Contactors & Relays

    Hi We have recently installed a PV system that needs to be switched when a generator starts. The generator control panel has a VFC (240V/5A) we can use to signal the contactor. There is a 150m run to the PV supply I need to isolate. I was planning to use a 40A contactor to isolate, however...
  3. P

    Need help identifying a Service Head fuse

    Hello all I've recently installed a ryefield board and just when I am about to connect itto the service head I find out some one has nicked one of the fuses. I cantidentify it and therefore cant source another one not allowed to post pictures but its ceramic and 45mm wide and 135mm long. I...
  4. C

    4 Core SWA linking two legs of a ring circuit

    Hi folks, I'm recently qualified so be nice... I'm preparing a quote for the wiring of a dozen up and over garages which are in two rows of 6 and face each other with an 11m gap. One double socket per garage and fcu for a single 1500 fluorescent fitting. I was planning to wire them all as one...
  5. D Skelton

    Age of those who can build a control panel and control a process

    So reading through a few of the recent threads where lack of skills in the industry seems to be the main bone of contention, I'm personally interested in the way that the industry is changing with bias towards the domestic sector. It seems to me that most of those coming out of college nowadays...
  6. A

    0 Megohms N-E and no RCD Trip

    Hi All I was re-testing a brand new install for QC purposes todayand the N-E on the IR was 0 Megohms, am I right in expected the RCD to trip. Itwas a TN-C-S system so wondered if the shared neutral and earth may have aneffect? The IR for L-N and L-E belled out perfectly, I haddisconnected both...
  7. B

    11kV terminations, not your average job for an apprentice!

    An example of the termination of an 11kV termination I did last week. its a practice one as you only get one shot at the real thing! Other wise you get angry gaffers shouting at you and have to dig up the cable again..... cable is 95mm2 triplex so obviously this is just one core. Forgot to take...
  8. J

    Got Problems at work any advice ??

    Hi there, I am an apprentice and i have worked for my boss for about 18 months now and I feel as that I know a good amount of electrical knowledge and i am still on £2.68 an hour. I have already completed a C&G 2330 LV2 and I have been on a 2357 C&G LV3 With the NVQ LV3. I have done my 1st...
  9. 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...
  10. 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?
  11. 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.
  12. 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.
  13. 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
  14. 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 ???????????????
  15. S

    Pump tripping out board after 10 mins

    I have a pump running for a swimming pool but after about 10 mins it trips out does any one know why this is happening it's run off a non rcd board thanks
  16. 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...
  17. 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...
  18. 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...
  19. 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...
  20. 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:

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