parallel | Page 8

parallel

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  1. S

    Power Supply?- Installing 12v Dowlights (MR16) in Parallel

    Just a quick one to get a feel for what other sparks are doing when installing 12v downlights into kitchens etc (in existing properties, not newbuild). I have a customer who wants me to install their new (9x) downlights at the cheapest price (no suprise) so as this has an impact on the amount of...
  2. C

    Series and parallel

    Hi there, let's say I have two 24V DC powered appliances, and I would parallel them up and use a 24V DC power supply to power the appliances. However, what would happen if I series them up and use a 48V DC power supply instead? Both appliances are resistive load and has the same power...
  3. A

    help required!wiring motion sensors in parallel to lighting circuit?

    I am trying to wire some motion sensors in parallel at each end of a corridor at work.There are 6 lights that are connected to this circuit via small plugs. I have got one sensor which work's by connecting it to feed at IN terminal and connecting OUT terminal to closest light. Doing this makes...
  4. DiscoDave

    Particulars of the installation at origin?

    I'm about to start some work on a detached garage. Sockets lights etc etc. From the supply head there is a 63A switch fuse, that takes a set of 25mm tails to the board which is situated about 4m away. From the board it goes in 16mm 3c SWA to the garage where it is terminated into a four way...
  5. C

    Temporary Paralleling of Transformer for Changing Over Supply

    I have two 415V busbars separated by a bus section which is normally open. Busbar 1 and busbar 2 are normally fed separately by transformer 1 and transformer 2 respectively. Both transformer's HV side are from the same 11kV board. Both transformers are of the same manufacturer, model, ratio, tap...
  6. M

    push button time delay switches Arrh!

    hi there every one done a periodic on what can be only describe as a pre site constrution then lobed in place accomodation building for one of her majestys places etc. opened up a push button time delay switch thinking standard or conversion but no :eek: parallel using twin and earth...
  7. M

    Paralleling cables

    Is this a big no no (I suspect it might be)? Here is the situation (this is for stage lighting, so not a domestic building): We have a 63A isolator going to a consumer unit (I presume with a 63A main switch, I didn't make a note of it). From here we have a 20A MCB wired to 12 fused switches...
  8. S

    UPS- 1+1 parallel scheme or hotstandby scheme

    Which one suits better in petrochemical industries- a 1+1 parallel redundant, a 1+1 parallel non redundant or a hot standby scheme of UPS. In the plant where i work its a hot standby scheme in use. Suggest some good UPS available in market as well, if happen to come across any of'coursey:cool:
  9. T

    Please Help - 3 water pumps running in parallel

    Hey Guys I am based in China and have 3 identical 60 meter 220v 1500 w water pumps supplying water up a hill of height about 120 meters and distance about 260 meters. They are currently connected in parallel but the problem is that they are all running at different speeds hence the water is not...
  10. K

    parallel cables

    can any help me, i need to install 200amp three phase supply at 135m long, i wish to run two smaller cable insted of one large size cable, so can any one tell how to calculate for parallel cables supply.:confused:
  11. L

    Underfloor Heating

    can anyone tell me if you can joint heating mats together to make it longer or have you got to get one the right size?.
  12. B

    parallel feeds

    when testing parallel feeds (say 2x4c70mm) do you have to separately test each cable or test them both connected together as this is the way they will be used yours benji

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