connections | Page 10

connections

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  1. C

    Need help with wiring connections

    Hi I am having trouble getting a boiler to fire up on the central heating. I'm using a danfoss rmt 230 room stat ( connections 1, 2, 3, and 4 A Danfoss Ts715 Si programer L and N supply to electronics 1 Com , 2 N/C, 3 spare and 4 N/O a worchester Greenstar 24, Boiler L and N supply to Boiler...
  2. S

    Un-accessible Connections?

    Hello People, Where do the Regs stand with un-accessible connections, i.e J.B's under floor boards/Buried in walls. Crimped cable, those new push fit connector blocks etc.... Any points of view would be greatly appreicated, Thanks.
  3. J

    Across the line and y-delta connections

    hi, i just want to ask at what Hp rating should i start to use the y-delta connection instead of the across the line connection. the main would be a 3Ph, 50Hz. thanks in advance.
  4. A

    excessive earth loop impedance on final circuit

    Hi. This seems like a newbie question but please help. Received the test results with an 'excessive earth loop impedance' on one final circuit. Circuit originates with a 32A MCB and serves 10 socket points. Wiring is 2x2.5mm live, 2x2.5mm cpc. Max Zs = 0.72 Ohm. r1 (line) = 1.68, rn (neutral) =...
  5. C

    Shower fire

    Hi All, Got a call today from a shaken customer- her shower caught fire while she was showering, flames up as far as the ceiling! Shower was installed three years ago and looks like someone didnt check for tight connections on the manufacturers side of the connector blocks! See pics!
  6. L

    who connects the thermostat

    can you please give me some advice electrician has run a 3 core and earth from boiler to room stat honeywell 2360b who connects the stat and who connects to the boiler ??
  7. J

    r1+r2 testing

    hi all just reading up on continuity testing (r1+r2 test) say i have a ring main of 40m long serving 10 sockets.. the reading i have got is say 0.35ohms but on 1 socket i have a higher reading of 0.46ohms now i have learnt at collage this may be caused due to a loose connection could...
  8. D

    Underpinning knowledge questions, need some help.

    Hi all, happy 2011 :D:D:D. Just plodding along through my JTL underpinning knowledge questions and i'm stuck on one. So if anyone could help it would be much appreciated :o "What are the main types, their advantages and limitations of different electrical connections?" Now i can't find anything...
  9. S

    Labelling Earth Connections

    To what extent are you supposed to label earth connections? I usually only put safety electrical connection labels on the points where the earthing is bonded, i.e. on pipes, metal work, etc. At places like joints between tape and cable and at test points for instance I don't put labels. I...
  10. cliffed

    eon connections

    Hi every1,after doin all the hard work,ie connectin 4x300mm swa cabling and installing from a 1600 amp main switch,then connecting 2 a square d panelboard,400mm swa single cabling, eon the supplier refused 2 connect the tails.The consultant worked out that we needed 3x400mm swa tails,per phase,2...
  11. cliffed

    tips on swa connections

    just wondering are we trying the impossible.installing 2x300mm swa to a eaton 800amp panelboard,because of circumstances the swa enter the building underground in a 1m depth trench,,the dbs are approx 1m above ffl.A 75mm hole will be drilled into the bottom extension box & suitable gland fitted...
  12. S

    Inaccessible Connections

    With reference to reg 526.3 What would you deem to be an appropriate compression tool?
  13. J

    Neff Induction Hob Mains Supply Cable???

    Hi, I recently bought an ex display Neff Induction Hob. Unfortunately the power cable to it has been cut off and needs replacing. Is it possible to fix this? Where can I get a new cable from? Will I need a wiring diagram? Any info would be greatly appreciated! Thanks, JLO
  14. ringer

    Silicon conductive sandwich for pcb connections

    My trusty Fluke 12 multimeter has, after 15 years of solid service, started playing up. It uses buttons to change the functions, and they are somewhat intermittent in operation. Opening up the meter it is constructed with a silicone keypad, not dissimilar to the ones found in mobile phones, and...
  15. C

    Dodgy spotlight connections

    Hello, The spotlights in my bathroom both have dodgy connections. They go off and I have to jiggle the bulbs to get them to come on. So the spotlight fittings are obviously not great. The reflectors and lenses are fine, but it's just the crappy plasticy sockets that don't make good connection...
  16. R

    board getting warm

    Hi just installed new Mem3 TPN board for storage heating. Suprised to find board warming although clamp test shows only 80ish amps per phase on the brown and the grey. The black is unbalanced drawing only about 35ish is this the reason? Would welcome any advice please. Thanks

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