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  1. J

    Correct application of diversity, separate hob/oven on single feed.

    Hi,he What is the correct application of diversity, when a separate hob and oven share a single feed. As far as I see it, electrically they are the same as a free standing cooker - or does a cooker have a limiting mechanism to prevent all circuits from working at the same time. Hob is 6.7kw...
  2. I

    Correct Procedure For Fault Finding On An Immersion Element

    Lads Can anyone please tell me the correct procedure for fault find on an Immersion Heater Element?? Does anyone have a PDF or give me a laid down procedure Regards Chris
  3. C

    the correct way to wire a 63 amp rcd

    hi im new to this and just started a course with train for trade skills i was hoping someone can help in my situation at home, ive just built a workshop and fitted a consumer unit with a 63 amp rcd a 32 amp mcb a 16amp mcb and a 6 amp mcb at the moment only the 32 for sockets and 6 for lights...
  4. S

    Commercial kitchen

    Am I right in thinking metallic worktables and sinks do not need supplementry bonding ? There all free standing and not fixed down in any way. Power is 30 mA protected. Thanks
  5. G

    Fuse Finder.

    Evening chaps, Can anyone confirm wether or not this unit is actually any good i.e, does it actually do what it says on the tin??? Martindale FD600 Professional Fuse Finder Kit I have some investigation works to carry out in a very sensitive environment and need to be 100% sure before I knock...
  6. J

    2 ovens 1 circuit?

    I've been asked to run in a supply for 2 2.8kW fan assisted ovens (none of them have hobs) but there is only 1 spare way on the main board, if it was only 1 oven 2.5mm would be big enough as well as a 20A fuse but as I need to supply 2 using 1 MCB I'm a bit weary as to how to do this safely...
  7. J

    Am I using the correct size MCB?

    Was asked to run a supply for a 2.8kW fan assisted oven (no hob), I done some cable sizing and voltage drop calculations as well as adding 50% overload and found I could do this using 2.5mm twin and earth cable. I also found I could use a 20A MCB as well but a friend said personally he'd use a...
  8. i=p/u

    finding the correct switch

    i was sent to tidy up the testing on friday, i.e fire alarm, and distribution circuits i forgot about etc. i was also told to test the new cu out on the jettys of a marina. i opened panels and asked for past test sheets etc and know one new where the mcb controlling the cu out on jettys was...
  9. M

    Correct way to install an earth rod.

    Hello people. This week I've got to install a rod at a property where the gas is being used as the main earth. I've installed them before for temporary generators etc but never done a permanent one. I'd be grateful if someone with more experience could help. The house is surrounded by concrete...
  10. G

    Procedures for verifying correct system operation

    Can anyone give me any advice on this, is it simply calculating wattage by multiplying V * R.
  11. P

    Please help = correct method of bonding system

    hi guys, just need a quick bit of advice. when implemtenting a bonding system for the likes of bathroom piping, ect. should we be linking from the main earth terminal even though it is no were near it or is it okay to go just of the ring main earth cable? same goes with for example if using...
  12. O

    16A MCBs on Lighting Circuits

    I was always taught that the max size mcb for domestic type lighting circuits is 10A due to the fact that accessories are rated no higher than 10A. When I recorded 16A MCBs on lighting circuits as a C2 departure my supervisor has corrected them as satisfactory as the current carrying capacity of...
  13. D

    Correct Inverter Choice?

    I hope someone on here can help with an opinion on my install. The system was installed in December to beat the original deadline. I was quoted for 14 Bosch or similar panels and an SMA or similar inverter. Basically they said they would install what they could obtain as supplies were short...
  14. J

    Correct isolation for sub main circuits

    Now, go easy its been a long tough month and I may be over-engineering my thoughts on this: I was looking at an installation today which has the following arrangement: main 3 phase service head in 1 location (assume TNS) 25sqmm 4 core swa to a 3 phase DB which then has single phase 63A cbs for...
  15. G

    Have i bought the correct fluorescent light

    I have been thinking of putting a fluorescent light up in the loft and running it off a plug, so i went to b&q and bought a fluorescent electronic batten as it was very light and slim to the others b&q sold. So now i have bought it i'm thinking i should have bought the normal fluorescent light...
  16. S

    invertor size? correct or wrong?

    Hi Had 2.02kw stystem in stalled 2nd dec. Have sunny boy 1700 invertor on system. noticed that invertor maxed out at 1680watts. Should i have had bigger invertor installed by my installer? Is 130kw in this period ok for gerenation? 35 deg pitch. sw facing and in north east scotland. any help...
  17. B

    Customer won't pay to correct dangerous wiring

    Asked to put a new 32amp cooker circuit into an old wylex 6 way board. Explained that I needed to split meter tails and install a new CU with RCD protection for cooker. Suggested a new CU for the whole house but customer unwilling to pay and insists on wiring new cooker circuit to old board...
  18. S

    Is this really correct?

    Hi guys, On a forum i often go on someone was asking about the MEB to there gas pipe as the gas engineer had pointed out that there was bonding to both side of the gas meter. Someone asked this question... Aren't gas mains plastic too? What is the earthing for, to protect those inside the...
  19. M

    whats the correct method of connecting broken - cutcable in a ring main socket please

    Hi, i have a fault on my lounge ring main, it works fine but failed the tests, i have discovered a cable passing through the back of one of the sockets has been cut which was part of the ring, what i need to know is how should this be correctly reconnected, there is enough cable to crimp or run...
  20. A

    Have I got the correct size inverter?

    I have 12 Suntech STP245S panel [ not my first choice but all we could get hold of in Nov!]and a fronius IG inverter 20. I queried the inverter sizing when this was installed but was assured that it was of sufficient size. I understand maximum output is 2 KW. Today is the first really sunny day...

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