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  1. D

    Air Source Heat Pump - the way forward for both REIC's and homeowners ??

    Dont know if we can either discuss this here or there's a separate section for this but I'm pretty interested in the above, even though its not all signed and sealed till Spring 2014 Just had a sales man round who was very helpful indeed and suggested that this is the way forward both in doing...
  2. A

    From Voltage Source to the Machine

    I have a project assigned to me, i.e. to calculate/compute the wire size, length, put a motor control in a Plastic Machine. I have some sources available, but still I want to know from the best people of this Forum. Please assist me on how to compute the wire size, wire type, type of controls...
  3. S

    IET vital source bookshelf

    Hi guys I have been after a digital copy of the latest GN3 for a while, I was going to download from the IEE website but after reading it seems it is stored on an app called vitalsource bookshelf. I wanted it as a ebbok so it could go in my kindle or ibook collection. Vitalsource has some bad...
  4. M

    New Ground Source Heat Pump Supply

    Hi, We have just purchased a 24Kw ground source heat pump and our existing electric supply to the property is made up of two single phases. One phase used to be used for the heating which consisted of about 12-13 x 3Kw storage heaters and the remaining phase for other items cooking etc...
  5. T

    Air source heat pumps

    Hi, has anyone out there had any experience of the performance of air source heat pumps. I am looking to fit one at my place. We are not on mains gas so am looking to find a way to economically heat the house - we currently have LPG. The manufacturers make all kinds of claims for COP but I was...
  6. L

    Where can I source switches like this, please

    Hello I need to find some of these brass switches, they are three ganged brass toggle switches with a brass rope edge. The also have a bevelled round brass nut fitting to hold the front on. I am working on a restoration project and they want to keep these type of switches. Any help would be...
  7. O

    [Need Advice] Reuse phone chargers

    Hi everyone, I'm making a house model in which I use one VAC bulb and another one but uses DC source. What blocking me at the moment is the electric source of the VDC bulb. I want to use circle in phone charger (I have many of them, ones of Nokia 12xx) to transform VAC into VDC and I tried but...
  8. A

    load close to source

    anyone?
  9. 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?
  10. Luminous

    Ground source heat pump

    I'd like some advice on the best way to provide the supply for the above. Back story is i'm rewiring a fairly large farmhouse, the original quote just included for 'boiler', immersion and under floor heating. However the ground source arrived today and i'm like "hello! what's this?". The...
  11. T

    LED Driver

    Hi All I have never posted before but i need some advice, I need to source a LED Driver my wholesaler says that it cant find it the driver in question is AC Adaptor 24v dc 2 amp the above is what it says on the driver it self the driver is used on a led round feature in a retail unit Can...
  12. J

    Really stupid voltage drop question

    Hey all, reading through the 17th trying to get my head around some areas of it. I did physics at school and some at uni so electrical calcs usualy dont bother me the slightest. BUT, If were calculating voltage drop over a reasonable length radial, for example twin and earth or SWA feeding a...
  13. M

    Finding the source of a permanent live

    Hi, I am trying to replace an emergency light in a hotel but cannot isolate the permanent live. I have isolated the mains feed in from the DB but there is another PL wired in from the ceiling void. I have tried the usual isolating trips one at a time however, the board is poorly labelled and...
  14. B

    Air source heat pump trouble...Help!!!

    Hi Everyone, I apologise, this is going to be a bit long winded! Any help would be gratefully received though. I have just finished wiring the supplies for an air source heat pump. By manufacturers spec it needs a 32A supply outside for pump itself, and a 16A supply to the indoor control unit...
  15. P

    Wylex RCD's

    Hi, My name is Phil and I am based in Warwickshire, whilst I have many years of experience in the electrical industry I have recently come across a problem that I cannot recall seeing before. I installed some new fluorescent fittings in the local community hall and upon carrying out a Zs reading...
  16. I

    RCD Tripping - Boiler Control Box

    Hi Guys, Hope someone can shed some light on a recent problem: We have attended a problem whereby an RCD was tripping in a property due to a capacitor (suppressor) in a boiler control box shorting. We have removed the capacitor, and now all seems well. The questions are, Does anyone know...
  17. C

    Dimplex 3-phase Air Source Heat pump (with Heatmeiser Control manager)

    Dimplex 3-phase Air Source Heat pump comes with Heatmeiser Control manager. Selling for a Customer - this item was unpacked, placed into position and wired and plumbed in. It was never, however, used as the Electricity Supplier could not install 3-phase power to plot as agreed. This unit was...
  18. LightGEN

    Source for small external generation meter box?

    We're about to install a PV system for a customer with health problems. The existing supply meter and CU are located in the back corner of a corner cupboard in the kitchen, to read the supply meter it's neccessary to remove a chunk of cupboard contents and crawl around on the floor to read the...
  19. A

    Identifying supply source

    Evening all - does anyone know if there is a regulation specifically requiring a distribution board to have something on it showing it's source - ie. where the submain that is supplying it is fed from? I'm testing a large school with 80+ boards, and not many show source. And, a totally seperate...
  20. 0

    Cables near heat source?

    Hi there, Part Rewire of a 250 yr old property....beams and rafters, low ceilings everywhere!! What are the regs.....if any, in regard to proximity of a cable (T+E) to a heat source. It's a rangemaster oven. The cable is clipped above the oven on the ceiling rafter. The kitchen has a low...

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