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low voltage

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  1. A

    high voltage three wire to low voltage 4 wire?

    Can someone explain to me please how a substation converts high voltage three wire to low voltage 4 wire?
  2. C

    Why are my LEDs so dim?

    I have 5 x 5W LEDs connected to a 12V transformer powering the lights in my kitchen. The transformer is described as 20 - 60W so at 25W I'm above the minimum load requirement. The lamps are described as 10 - 30V 5W LEDs so with the transformer output at a stated 11.6V I'm within the tolerances...
  3. K

    Why low voltage (40 Volts) at outlet

    First, I have to apologize for the following really long description. I guess if I draw a diagram, most of the text below will disappear. I will draw diagrams to attach to this topic. I need advise on this situation (40 Volts at outlet). When I plug Xmas light in one outlet near the patio...
  4. T

    Converting low voltage halogen spotlights to 240v LED

    Hi I have two lighting circuits of 5 x low voltage halogen with individual transformers for each lamp.. to try out the new 240volt GU10 LED's.. obviously after turning power off at the consumer unit .. I cut out the transformer on one of the lights and connected the new lampholder to the 240v...
  5. S

    Low voltage dimmer switch ... i think

    Hi, im hoping someone could help me as ive never come across a dimmer switch like this, its a bit before my time. Ive upgraded some lights for a client in a bowling halls lounge, there is 230v supplying the luminaires and im fairly sure that they have used a low voltage dimmer switch. My client...
  6. B

    Convert Garden Lighting from 220/240v to low voltage

    We have garden lights fed from a standard consumer unit via SWA cable which we want to convert to low voltage keeping the existing lamp holders but switching to LED lamps. The plan would be to switch out the existing consumer unit to one containing a transformer adequate to drive all the lamps...
  7. D

    low voltage to earth

    Hi guys need help to stop me me from having no hair left. Been pulling it out for 2 days. Routine inspection RCD not tripping. But further checks show the voltage I'd too low. Old lead cable supply Ze 0.22 Only getting 1A fault current and voltage 193 volts to earth. Any ideas?
  8. C

    Low voltage DC through AC wires?

    I have a friend that owns a local restaurant. He's renting a building that is somewhere around 30 years old. The building currently has a sign with lights above the signage on both sides, shining down to light up the sign. And there's a switch at the bottom of the pole that they can use to...
  9. westward10

    Reported content: Post in thread 'Domestic - Help needed finding low voltage led lamps'

    Post in thread 'Domestic - Help needed finding low voltage led lamps' by Markyd has been reported by westward10. Reason given: Content being reported:
  10. Markyd

    Help needed finding low voltage led lamps

    Hi everyone..Help needed finding some low voltage led lamps that will run off of a 12 volt transformer not a driver,as the previous so called sparky has made all the transformers impossible to get at without tearing the ceiling apart. Any recommendations will be appreciated,
  11. B

    Cavity wall access from Loft to 2nd floor for low voltage cable.

    Hi guys, I know this is technially not a mains electrical question as it's regarding network cable (CAT7) rated for inwall installation. But my question follows the same theory. I'm looking at dropping a few network cables from the gable end of my wall in the loft down into a room on the 2nd...
  12. J

    Trailing edge versus low voltage

    I'm an electrician but know jack about LED lighting. Buying my first home and thought that this is a could time to learn, but seems a little more complex than I first thought. So the plan was just to use 230v dimmable LEDs (Luceco EFTE45BS30) with trailing edge dimmers. But then the more high...
  13. R

    Mains or Low voltage garden lighting?

    Hi I am currently remodelling my garden and going to be installing some decking lights, spike lights and up/down lights on my fence. I just wondered what were peoples opinions on using either 12v or mains powered lights Was looking at switching it using the quinetic wireless switch Could...
  14. C

    One Outlet Low Voltage

    Hoping for advice that isn't "check each outlet" but if need be, I will... Bought a house a few years back (1960's build). Home inspector advised all outlets worked fine after testing each one. Randomly, one decided to stop working. I recently started replacing outlets in the house and figured...
  15. diced carrots

    L-E reversed and low voltage on RFC

    Trainee here so it's likely I've got my wires crossed! I've got a small unoccupied rental property which had a rewirable fuseboard which my work colleague (fully qualified spark) and I replaced the other day with an 8 way RCBO board, surge protected. He did the board change while I replaced...
  16. B

    UK Running conduit in walls to knockout boxes for low voltage cables?

    Background I'm running some low voltage cable (e.g. CAT6A data cable; coax cable; HDMI cable and speaker cable) to a number of rooms of the house and would like advice on the best way to do this to avoid plastering the cables into the walls - to give me flexibility to remove / pull new cables...
  17. F

    Low voltage lighting in bathroom

    Hi all sparks out there, I am installing some low voltage lights in a recess in my bathroom. The transformer is in the loft, and I want them to operate independently of the pull cord switch, so whilst I appreciate that if these lights were mains operated, a wall switch cannot be used in the...
  18. R

    Undersized low voltage transformer?

    I've just moved into a place that has low voltage halogen lights in the kitchen. I had a look at the installation and I see they are running 6x20w G4 halogens off a single DA-E60 transformer - specifications for the transformer shown below. I measured the amperage draw of the light bulb at 1.8A...
  19. T

    Homework - low voltage side 3x400V and a short-circuit power on the low voltage side 95MVA is powered by an OPS

    Hello everyone please help me with this homework which is too hard for me due to the fact my teacher didnt teach well so i have some problems with this schoolwork. a distribution transformer station with a voltage on the low voltage side 3x400V and a short-circuit power on the low voltage side...
  20. S

    LV Distribution Feeder Queries

    Hey there everyone, I'm currently an EE student doing my 4th year project. As part of my project, I am carrying out a literature review into the design rules DNOs apply to their LV distribution networks. I am trying to built up a reasonable understanding into how these networks are laid out...

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