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parallel

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  1. C

    PIR parallel to Switch makes short circuit

    Hi, I have lighting in the bathroom plus an extractor fan. There is one switch for the lights and one switch higher up for the fan. I installed a PIR in the bathroom and wnated it to turn both lighting and the fan in parallel to the switch. I fed the PIR from the fan's permanent F and took the...
  2. J

    24v Garden fence lights - series or parallel??

    Hi everyone, I was wondering if I could get a little advice on a small project I plan to carry out over the next few weeks. I plan to install 10x 6w GU10 LED bulbs (fitted inside some suitable outdoor light boxes) on each fence post along a 30 metre garden fence, the lights will be powered...
  3. C

    Parallel generator, earthing and bonding

    Hello, can anyone advise on bonding of extraneous conductive parts when supply is from a generator run parallel with distribution network? There'll b a 200kva generator supplying spray booths that have a gas supply to them. The metal pipes aren't underground but connect to tanks outside sitting...
  4. R

    Rheostats in parallel. Load sharing??

    Hi all. Hyperthetical scenario. Simple loop. 36V supply. 10 amps. So whatever resistor I place in the circuit to produce the 10 amps has to be capable of taking 360W. If I only have access to 200W capacity rheostats can I use two of them in parallell to share the load? Thanks
  5. D

    Parallel paths on R1 + R2 test

    Hi there Doing some testing at moment. R1 + R2 readings coming in lower than R1 + Rn. Cpc neutral and live all disconnected. There is alot of containment on job and adaptable boxes are all fly leaded to earth. My thoughts are they are parallel earth paths but guy working with seems to think...
  6. jonnyb

    PIR manufacturers parallel etc etc etc

    Anyone currently able to tell me which pir sensors are able to be wired in parallel and which aren't ( usual factors and suppliers) as I need to have two controlling one light and don't want to have to return them and get alternatives.
  7. C

    Push buttons wired in parallel replace

    hello guys Block of flats, communal areas currently have a time lag push button system in place. They want the buttons replaced with PIRs however there is no neutral at the switches? Are the neutral free push buttons not very good? What are the options.
  8. gazdkw82

    Parallel resistances - 25 characters

    Little mop up. Where am I going wrong? Done loads of parallel resistances before with no problems
  9. R

    Wiring series parallel battery bank ?

    Just checking if this is correct wiring for series parallel on four 6 v batteries to get 12 v output. I have maximum of 30 amps of solar going in, what size cable is right for the battery bank connections ?
  10. the pict

    zinc microwave sensor parallel N ?

    Has anyone fitted these, I just do not understand the connection diagram Pict
  11. Gavin John Hyde

    Parallel earth path between 2 circuits

    I have a ring circuit (circuit 1) and a light circuit (circuit2) in a flat im working on and i have somewhere in the walls or ceiling a joined earth path. From what i have seen there is no obvious metal conduit, so it seems its either the ventilation system that is fed by the same ring and goes...
  12. kingeri

    Conductors in parallel......

    I was at a job on Friday in a big 4 storey house. One of the jobs I was there to do was to add sockets to a bedroom which actually didn't have any at all. The top floor sockets were on there own breaker, a 32A RCBO actually. There were two 4mm^2 T&Es at the RCBO so I initially thought it was...
  13. D

    wiring led household bulbs - parallel of series

    Hi, looking for some advice. I'm doing a DIY project for a vanity mirror, with bulbs along the top of it. Each bulb is 7w. I've got some 5 port wago connectors, and have wired it with the live, neutral and earth from the plug connecting into individual Wagos. Then each bulb holder has a wire...
  14. M

    Connect 25 AA batteries in parallel and series

    Hello, I have 25 batteries that are AA using 1.5 volts each, that is total = 37. 5 volts for 25 batteries. I want to know please the right way to wire all the batteries together to make a parallel and series battery pack. Please tell how to wire each battery together to connect all 25 AA...
  15. V

    Tankless instant water heaters in parallel

    Hi, Initially not sure of where to put this post as it touches more that one forum. Grateful for your help please with an unusual installation. I am looking to avoid long runs of hot water from the combi to the launderette due to being on a water meter and to run the taps until hot water is...
  16. Perci

    Using SWA cables in parallel

    Hi A job that I'm currently looking at requires a 300A 3ph supply to a unit. The cable will be 100m long so the calc comes out at 240mm2. This cable is to be pulled down a duct, the main issue is it's weight and size will be a battle. I'm thinking of running two 95mm2 in parallel that would make...
  17. Y

    Problems with Series/ Parallel strings not adding ampage.

    Hi Guys, im hoping someone can help me. I have recently installed 3.2kw system for an offgrid job. The problem im getting is that im only ever seeing around 300 watts solar generation for the whole system. We have used 10 x Canadian Solar 320 watt panels Voc for the panel is 44.9 and the ISC IS...
  18. H

    RLC in Parallel - Calculating instead of Drawing

    Morning all, Last night at college we moved on to RLC circuits in parallel, the type you'd typically find in a fluorescent light to correct power factor. We drew out some parallelograms to work out the true current usage and power factor after adding a capacitor. The lecturer said that's all...
  19. gazdkw82

    Parallel resistors

    I'm getting conflicting information regarding parallel resistors. I originally thought the below was how to calculate total parallel resistance 1. Rt= 1/R1+1/R2+1/R3 2. 1/Rt However in my pre exam workbook it says to 1. Calculate Rt as 1. above 2. Find the lowest common denominator 3...
  20. S

    parallel circuit

    Just a quick one. have a new machine install that is 3p+N 270 Amp (protected by bs88 315 amp fuses) cable length 80m from main switch board. cable required 120mm, But installing this size cable will be a nightmare as high level with a lot of racking etc. would two 50mm cables in parallel...

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