answer

  1. B

    Job interviews

    Hi, can anyone give me an idea of what questions are asked at job interviews for a domestic or commercial electrician and what answer you'd give or expect? much appreciated, Bryn
  2. the pict

    A question I cant answer

    I have lad working with me at present on a outside job really quick learner, good with his hands and uses his head but yesterday he asked why is the primary insulation so tough and why is the copper so brittle in SWA I have never though about it I just accepted it answers, anyone, PIct
  3. S

    Installation Method

    " The supply to the detached workshop has been installed using a two-core steel wired armoured cable (SWA). Describe the most appropiate method of testing continuity of CPC to this distribution circuit "
  4. K

    Quick answer

    stop asking “a quick question” as a thread title. You may get someone who has a slight interest to answer. I can’t even be arsed to open a “quick question” anymore because even though the subject may interest me, 9 times out of 10 it contains utter drivel. If you’ve something worth asking...
  5. G

    2395 electrode test standby generator answer

    question probably how would you test resistance of electrode on a tt system on a stand by generator. firstly ask permission and notify the customer that the standby generator will be locked off thus premisses will be with out a back up power supply. generator isolated lock it off and retain...
  6. C

    Atl this should answer your questions!!!

    Apprentice firm goes bust with debts of £6m (From Daily Echo)
  7. Baker1988

    rcd on a tt system

    hi ya i have a home work question which is: What additional protection is required on a TT system, justify your answer, Stating what regulation from bs7671 requires additional protection. I am sure that answer is a rcd but i just cant fine the reg that states that you need a rcd the closest i...
  8. L

    IR test 2391 The way to answer ?

    Hi guys, Just wanted to get your advice on answering a 2391 question. If i was to get a question "Describe how to carry out an IR test on a radial socket circuit of a new installation" for example , would i be able to mention the safe isolation procedure like this 1)Seek Permission /Inform...
  9. S

    MAXIMUM DEMAND... nic assessment

    hi guys. if i calculate maximum demand like i got 6 circuit 32a cooker 32a upstairs ring 32a down s. ring 20a,radial 6a upstairs light 6a down stairs light get the higgest one and add the rest together get 40% of it and finally add to highest one.. do u thing is that right?? and also do...
  10. stidge

    voltage???

    Hi all just replaced oven and cooker hood new for old , replaced hood noticed metal capping run at angle that had been nicked with old screw ? Anyway did IR test etc everything fine, switched both on just to make sure I put my testers from cooker to hood and got 3/4 or 5 volts varying ???? Any...
  11. L

    Working live question

    I've just come across this C & G 2357 sample question & in my opinion after a quick look at the regulations I would say non of the answers are valid or are they just badly worded....or is it just me! 1. Under the Electricity at Work Regulations live working is only permitted: a) when other...
  12. W

    Panel/Convector heater?

    Have a customer with no heating at all in 2 of her bedrooms ( No gas supply also ) both rooms are around 6 x 3 meters .. Any suggestions for a decent panel/convector heater that will heat these rooms adequately?
  13. C

    voltage drop calculation

    i want to know the formula for voltage drop calculation for 3 core x50mm2 hv cable feeding 1000kva transformer 13.8kv. the cable is xlpe ,armored..it is connected from Ring main unit
  14. S

    Does anyone know the answer to this?

    FIT is link to inflation (RPI). But what would happen if we were to enter a period of deflation? would the FIT reduce or would be be capped at its current level at the time? Thanks
  15. S

    still need answer please

    Am i right in thinking a 600 KVA 3 phase supply is approx 1400 amps per phase. Read more: http://www.electriciansforums.net/electrical-forum-general-electrical-forum/67069-kva.html#ixzz2BMgYxgmu
  16. D

    help with questions i cant answer

    well hear i am asking for your help again i really don't know what i would do with out this site and the people who answer the questions i ask so thanks for all you help - Which of the following is classed as 'Minor Work'? a) Adding extra lighting points to an existing circuit b) Installing...
  17. T

    sorry if wrong section- help with Q on inductive reactance - revision homework

    hi all, can someone if the following answer is correct. would as teacher but 2 days till class. a coil of inductance of 0.2H is connected across a 230V 50Hz supply. What will be the current flowing in the circuit, if we assume that there is no resistance? XL= 2pie fL XL= 2pie * 50 * 0.2 =...
  18. M

    If anyone could give me their answer on this question, and how they got there pls

    the question i am struggling with is this, im new to the calculating of things and am not sure where to start. A two core cable supplies two loads from a 230v supply, the first load is 70m from the supply and takes a current of 40A, the second load is 100m from the supply and takes 20A. find...
  19. J

    High stakes on this answer

    Hi all in the forum A tea time discussion has created a non decisive answer, and there is a cup of tea swinging on the solution. When testing an rcd, should the protective bonding conductors be disconnected? We have agreed to accept the general consensus of this forum as our decisive answer...
  20. lurch

    Memera 2000 RCBO definitive answer

    Hi I have seen a couple of posts on this subject but they go back a bit and dont appear to have a definitive answer. I have a MEM Memera 2000 CU, where I need to provide RCBO protection to the lighting circuit to cover some additions I have made in the bathroom. There is already a Eaton 16A...

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