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  1. L

    10mm T&E 9.5kw shower loads of new insulation

    Come across this twice now - what's everyone doing with this I'm advising my customer it should be a bigger cable but it the old well it seems to work ok
  2. P

    timeguard light switch

    Anyone know of anything similar to this 24 Hour / 7 Day Security Light Switch that can switch low energy bulbs of 7 to 12 watts, all the ones i have come across seem to want to only switch larger loads of 20W or more even the ones with separate fluorescent adaptors still say they are for larger...
  3. D

    ELECSA Certification Scheme elecsa assesment

    hi got my elecsa assesment in about a month anyone had one whats it like questions asked e.t.c any help would be much appreciated thanks
  4. M

    3 phase help.

    lads i av been asked to provide a 3 phase supply for a small commercial oven. 9.5kw 10kw and 9kw. what cable size is required. i calculated 33 amps per phase. is this correct. 16mm sq cable? i just need to rum the cable about 30 meters on surface. i will run it to an isolator.hope u can help.tanx
  5. P

    Split Load Board Certification Question

    Hi,How does everyone fill out the certs for a split load board to include the RCDS if issuing a DOMESTIC ELECTRICAL CERTIFICATE? How do you include the details of the split loads and the submain RCD characteristics into the boxes provided? Do you test RCD tripping times for each circuit even if...
  6. P

    loads of cheap tools reduced at b&q

    don`t know wether it`s just the one by me in leeds or if they are all the same but a load of tools were on reduced tonight. got a 8lb sledgehammer for next to nothing, ratchet spanners, snips vde pliers, hammer scutch for 7 with a load of ends
  7. R

    Functional earth on RCD

    Bought a MEM a100he,I bought it as an RCD but it has a functional earth...... is this some kind of RCBO, or do some RCDs have an FE? Never seen one on an RCD before.
  8. C

    Circuits on phases

    Hi I was wondering if anyone could explain about circuits on phases, on sites that I work on we r given drawings with lighting circuits and power circuits and I get told we need to keep certain circuits on certain phases but dnt knw why, obv you have exp L1 L2 and L3
  9. gaffer

    black enamel conduit

    Just out of interest really,do any of you guys ever use black enamel steel conduit any more?.Did loads in my apprenticeship in the mid eighties,but that was probably the last time I used it.
  10. I

    Cable size for specific loads chart

    Hi Has anyone got a ready made chart that has the right cable size for the the load of a certain appliance ie Cooker etc For example 2.5mmsq will do up to 21amps and the equivalent kw's etc etc Its not for myself I want to give it to my apprentice I can't find my regs book and I just...
  11. C

    loads of cable

    im leaving the country soon so want to get rid of my garage stores i have quite a bit of domestic use cable part drums but all half or more i have 10mm 2.5 3core singles earth ect also about 60 bacboxes metal and some other bits and bobs im in sheffield all the cable can go for half price what...
  12. M

    harmonics from non-linear loads

    Hi all, Assuming a sinosoidal AC supply to a non-linear load which draws distorted current. My question is 1. how does people define non-linear load in general,is it purely resistive or it contains reactive components? 2.Assuming the distorted current waveform is in phase with the voltage,the...

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