1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Best way to connect a USB LED strip to a ceiling light fitting

Discussion in 'Electrics UK' started by mixer28, 2 Feb 2021.

Tags:
  1. mixer28

    mixer28

    Joined:
    13 Aug 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    I wanted to know the best way to use my ceiling light fitting (which is a bayonet cap)
    to connect an LED light strip that has a USB connector and typically plugs into a USB to mains plug adaptor (like the iPhone charger ones).

    IMG_7560_1200w.jpg

    If I plug in a cable with a bayonet fitting ( as per image)

    IMG_7561_1200w.jpg

    I want to hang about 3m of LED around a acoustic panel on the ceiling of my home studio and use the light fitting to power it, as its right next to it and I don't use the ceiling light.


    led_1200w.jpg

    What's the best way to connect to the USB light strip?

    Is there a fitting that can safely run from the light to a USB socket that I can then plug the LED strip into?

    Just trying to figure out how I can do this safely!

    Many thanks
     
  2. Sponsored Links
  3. mattylad

    mattylad

    Joined:
    27 Apr 2008
    Messages:
    7,964
    Thanks Received:
    592
    Country:
    United Kingdom
    The best way is to forget this idea entirely!
    It will go BANG! if you try connecting the bayonet lead to your USB lead.

    USB is 5v DC, your lighting is 230v AC so the two need a power supply between them (that's the bit in the plug socket you push the USB lead into).
    What does the instruction say it needs for a power supply? (whats in the small print on the one you use?).
    5v at how many amps? (or is it 12v?)

    You will also need to ensure that you have a fuse there somewhere.
     
  4. ericmark

    ericmark

    Joined:
    27 Jan 2008
    Messages:
    17,895
    Thanks Received:
    1,669
    Location:
    Llanfair Caereinion, Nr Welshpool
    Country:
    United Kingdom
    Some where I have the transformer that was used when I was a child to run a 3 watt night light, but those days are in the past the Y connectors that allowed two items in the same BA22d connector are will gone. We don't plug irons in to lights any more.

    This has removed the sales of the old plugs like shown in your picture, the problem is in the main lack of earth on the plug, the only two pin plug used in UK is a shaver plug which should go into a shaver socket which has an isolation transformer so it is an IT supply. (Insulated from Terrestrial not information technology)

    In domestic or any other place where an ordinary person in in charge rather than instructed, skilled or competent one is required to use type tested equipment. There are fittings that have 12 volt transformers built in, which do give the room to replace it with a 5 volt DC power supply, but it could not be sold ready made, and if made by you it is not type tested.

    I have also wanted to have a USB power supply in non standard form, wanted it to power a Nest Gen 3 thermostat mounted on the wall, loads to power it sitting on a table, in a table stand, but not wall mounted. The closest I could find was USB module in a grid switch, which for you would mean a socket back box in the ceiling.
     
  5. mixer28

    mixer28

    Joined:
    13 Aug 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks for the replies.

    If I took the light pendant off and wired the cables to a plug socket like this >>

    IMG_7566.JPG


    Then plugged the USB charger plug into it (as I would into a wall plug socket)

    51A5i7yuzuL._AC_SL1200_.jpg

    And the USB led into that, would this be a safe solution?

    Thanks again!
     
  6. ericmark

    ericmark

    Joined:
    27 Jan 2008
    Messages:
    17,895
    Thanks Received:
    1,669
    Location:
    Llanfair Caereinion, Nr Welshpool
    Country:
    United Kingdom
    The lights you show are for decoration, i.e. they look good, but light output is low.
    1) You need alternative lighting to see with.
    2) The socket would look ugly.
    There has been many a debate as to having 13A sockets on the lighting circuit, seen it done many times in loft space to power an aerial amplifier, but the problem arises when some one plugs in some thing else. Be it a mobile phone dangling from ceiling or used as a table supply for the hot plate, sods law if you did that some one at some point would plug in some thing else and you would loose all the lights in the house.

    At one point is was illegal, there were two meters one for lights and one for power and lights electric was cheaper, so up to the 50's there were adaptors to take the cheaper power from the lights, my granddads house only had two 15 amp sockets, when my dad in 1954 moved into a new house he was so proud of have 7 x 13A sockets in the house, there was one in every room plus landing, and a further dedicated 15 amp in airing cupboard for immersion heater.

    The rules refer to dividing into circuits so failure of one does not effect another, so you don't loose lights, Jury-rigged. means something was assembled quickly with the materials on hand. Jerry-built. means it was cheaply or poorly built. Your idea falls into both, you should not need telling how daft it is, you just need to consider what it would look like.
     
  7. BS3036

    BS3036

    Joined:
    24 Sep 2007
    Messages:
    843
    Thanks Received:
    54
    Country:
    United Kingdom
    Eric, you're beginning to sound like Winston.
     
  8. Colin Brenton

    Colin Brenton

    Joined:
    1 Mar 2008
    Messages:
    152
    Thanks Received:
    27
    Country:
    United Kingdom
  9. bernardgreen

    bernardgreen

    Joined:
    3 Nov 2006
    Messages:
    25,141
    Thanks Received:
    2,489
    Location:
    Bedfordshire
    Country:
    United Kingdom

    This


    [​IMG]


    plus this
    [​IMG]

    equals power from the lighting circuit.

    Don't tell Winston1
     
  10. Sponsored Links
  11. HERTS P&D

    HERTS P&D

    Joined:
    9 Apr 2010
    Messages:
    12,523
    Thanks Received:
    1,915
    Location:
    Hertfordshire
    Country:
    United Kingdom
    BEST ADVICE.

    Andy
     
    • Like Like x 1
  12. mattylad

    mattylad

    Joined:
    27 Apr 2008
    Messages:
    7,964
    Thanks Received:
    592
    Country:
    United Kingdom
    Coincidentally I found a PSU for a similar set of LED lights that my daughter wanted to use last night, the adapter was 5v 1A and seemed to work OK.
    However the little box that goes on the end with the IR sensor in was marked as 12V 6A so it needs to be a beefy power supply output.
     
  13. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    4,981
    Thanks Received:
    369
    Location:
    Kent
    Country:
    United Kingdom
    A school friend of mine moved to a council house about 1963, the whole installation consisted of a pair of cotton/rubber singles running along the front of the terrace with a cast iron junction box above every front door, inside there was a ceramic 2 pole fuse feeding only lighting except some one had added a 5A 3p socket beside the chimney breast and earted to the gas pipe.
    Left for them were several cables with B22 plugs and 5A 3 pin sockets.

    At the end of the terrace was a cast iron 2 pole 30A fused switch to supply the whole terrace. it was always left unscrewed due to the number of times a fuse blew and needed repairing.

    And that's how they survived until I lost contact in 1966 when we went up from juniors to different senior schools.
     
  14. SUNRAY

    SUNRAY

    Joined:
    28 Jul 2009
    Messages:
    4,981
    Thanks Received:
    369
    Location:
    Kent
    Country:
    United Kingdom
    Does the kit come with any rating of the tape? IE 5V 2W per metre as an example.
     
  15. ericmark

    ericmark

    Joined:
    27 Jan 2008
    Messages:
    17,895
    Thanks Received:
    1,669
    Location:
    Llanfair Caereinion, Nr Welshpool
    Country:
    United Kingdom
    Oh dear, am I that bad? I did try to pull the punch. Had it been an under counter lamp which was going to be used temporary until lock down ended I may of hunted internet for an in-line USB or other temporary method of getting light, but those lights are for decoration, so unless it looks good no point.
     
  16. plugwash

    plugwash

    Joined:
    28 Mar 2004
    Messages:
    9,430
    Thanks Received:
    355
    Country:
    United Kingdom
  17. mixer28

    mixer28

    Joined:
    13 Aug 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Cheers for feedback.

    i) The aesthetic.
    • I think there's a bit of a misunderstanding ericmark
    • The unit will be fixed to hang around a rectangular 4ft x 2ft acoustic treatment panel that is already suspended to the ceiling (its a recording studio space).

    ii) Light Level
    • I already have other lights installed from mains plugs in the room, so light level not a problem.
    • I wanted to throw light onto the ceiling from the ceiling panel. The LEDs look good around other panels, and thought I could use the same remote control system as the other LED strips which are already set up via plugs around the room and work fine.
    My logic was
    • Cable would be hidden
    • Lights would point to bounce off the ceiling
    • Would work with existing remote control unit
    • Current pendant/ light is not in use and is actually slightly in the way.
    • So I wondered if there was an option to use the light unit as a power source, rather than running about 10 ft of cable up the wall and across the ceiling from a light socket - which I think can look ugly.

    Anyway hope that clears things up.

    Guess the main thing is if it invalidates home insurance/ not legal to repurpose a light fitting as you say, then its an easy "No" / end of story.

    Thanks Plugwash. Was getting fed up with occupying up so many plug sockets for lights - the 4 port charges look like an option :)
     
Loading...

Share This Page