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  1. A

    series and parallel combinations

    Hi all I am carrying out my assignment and a little stuck on this i have to work out the Total inductance and total capacitance now I'm aware of the formulas for series and parallel inductors and capacitors but as you can see from the picture i have a series/parallel combination and I'm...
  2. S

    Expected r1 r2 value when circuit 16.5m long

    Hi Guys stuck: A ring final circuit wired in 2.5/1.5 Resis: per m 7.41 and 12.1 what is the expected value of (r2+R2) the circuit is 16.5m long
  3. B

    2394 Multi Choice Mock Papers

    Hi Guys Sitting my multiply choice exam next tuesday. Any chance of any past papers or recommended sites? Any infomation would be much appreciated Many Thanks Stu
  4. K

    Fused spurs

    Hi all. Can anyone give me advise on fused spurs? I would like to know if it is ok to wire a FCU adjacent to a ring socket. Then run 2.5 t&e to say 5 double sockts and then add another FCU with a 3 amp fuse to run a 6ft fluresent fitting?Is this classed as a spur off a spur as i am aware that...
  5. D

    Crabtree c50 breakers

    Are these worth selling or just get rid? Saved from a recent mains change
  6. Pete999

    Should know the answer but stumped

    Not asked for help much, but I'm a bit stymied on this problem. I have a 24vAC door entry system which keeps getting hammered by the local thugs. I have fitted a 12 volt DC Mg Lock and tried to integrate the two via a 24vAC coil relay, the problem being relay chatter, and not switching the Mag...
  7. F

    Running conduit, attic

    Hi I am fitting conduit in my attic room ready for when i get it rewired so i can plaster up and have a finished room for the time being. I won't be running any wire. I have 2 x 20mm going up to a 35mm deep knockout where a dimmer switch will be located for a 3-way switch rig. Out of the top...
  8. D

    Best answer in a job interview ever!

    Just left the office in bits, stomach ache from laughing that much! We're taking on another lad due to extra workload (great times) and i've just sat in on an interview. My manager asks the question 'what's the recommended distance between detection in a corridor less than 1m wide' He shrugged...
  9. N

    Answer found please lock.

    Answer found please lock.
  10. L

    2394 question

    Hi I am due to start the city and guilds 2394 course next month. I thought that I would have a look at some past questions to see what to expect. I am having trouble with one of the questions and was wondering if anyone could explain the theory to me. 16) The measured value of loop...
  11. 1

    Shower feed wired in wrong

    I was wondering if anyone can answer this one for me. I'm an electricians mate, I did ask the guy I'm with but he couldn't give me an answer. So after he changed the board and I did the bonding I get to go round testing. Whilst taking the zs of the shower I noticed immediately upon removing...
  12. sparksburnout

    Ring-Ring, answer please!

    Got an odd set up in a Kitchen, which just seems wrong but I can't convince myself why its wrong, other than bad practice. There is a final ring, serving 4 outlets on one side of the kitchen, which is then spurred, using 6mm, to another, small ring with 3 outlets. Previous installer obviously...
  13. S

    Ring Final Circuit testing, What is wrong. Trainees only to answer please.

    You have been asked to carry out a full test on a ring final circuit. It is wired in 2.5mm single core cables. (I have made the test result values up to make things easier to work out). You have confirmed that the ring is continuous, and your r1 value is 0.5 ohm, your rn is 0.5 ohm and your r2...
  14. A

    Electrical testing - Can anyone answer

    Hi, I have long been perplexed by something regarding testing and would love to hear others thoughts. When we go up against the larger testing companies for quotes on condition reports and the old Periodic it seems they have unfeasably cheap rates per circuit given the number of tests per...
  15. Paul.M

    Question #2 Shower?

    This is another real world actual job, keeping away from mock questions etc. The story:- Mrs. Smith has just bought a house and calls me because there is "a bare cable sticking out of the wall in the downstairs shower room" which she is very concerned about. I turn up and take a look at it...
  16. N

    Moving A Socket A Few Feet

    Client wants (indoor, domestic) socket moved a matter of a few feet, assuming cable is not to be buried in wall, would you say for regs compliance socket must be RCD protected? I know the answer is liable to be yes because it's adding a new socket and decommissioning the old, but just wanted to...
  17. ebow72

    CSCS Card RCD Question

    I am due my CSCS card renewal and have the revision disc and this quesiton came up, now I am either loosing my marbles or RCD's have changed their purpose since this disc came out. My answer was A, but they seem to think it's D. One that slipped through the net I reckon.
  18. I

    vectra battery light

    vectra 2.0l diesel 03 plate my brothers vectra the dials kept dropping and battery light flashing on , few weeks later it happened again and stayed on so he called out the RAC And the boy told him it was the alternator so he got one from the scrappys and got it fitted , a week later the same...
  19. R

    British gas etelephone interview

    Hi I have a telephone interview for British gas this Thursday for an electricians job with themselves it has been said I will be asked 6 technical questions from the regs book any ideas on what they will ask if anyone has had this interview would be so grateful for a reply as really want this...
  20. B

    Ring main fault

    Need help A property I recently done an EICR on has a fault on the downstairs ring main. The fault is an open circuit on the r1. To shorten the story I managed to believe the fault is under the floor and may have possible joint boxes. But the client has sold the property and didn't want to...

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