transformer

  1. T

    Power transformer Low voltage supply

    I recently installed a 200kva, 33/0.400 KV transformer for a small commercial hostel, so after powering the transformer, we checked all the output of the 3 phase at the secondary side and it was ok but whenever a single air conditioner is powered , then the voltage becomes low. Please guide me...
  2. M

    Link 2 LED Xmas strings to one larger Transformer or LED Driver ??

    I have 4 sets mains / 36v LED strings and I would like to merge 2 sets to one power supply - plaese advise is this possible and what size transformer / LED driver would be needed? Each string has 1152 bulbs at 0.043 per bulb Label on wire of Lights states 36v~2.33A, 84VA then...
    • Mandak
    • Thread
    • christmas lights driver larger led strings transformer xmas
    • Replies: 3
    • Forum: UK Electrical Forum
  3. C

    Replacing transformer on lamp.

    Looking to replace a broken transformer on lamp. Having problem finding the exact part. Transformer model is CY35-2400150A 12V 60Hz made by NingboChen Yow. I can find these transformers, but the one I need has a female outlet that the cord plugs into. The lamp has a male plug.
    • Craven
    • Thread
    • lamp replacing transformer
    • Replies: 1
    • Forum: Lighting Forum
  4. C

    Im putting in a new transformer for a halogen light and extractor

    I am putting in a new transformer for an extractor fan/light and I thought I had finished but the fan works ok but the light doesnt. I have put in new bulb. I think i must have wired incorrectly
  5. M

    UK USA transformer causing lights to flicker???

    Hi, I have American tenants who use transformers. When they do, the lounge spotlights and kitchen light flickers. These are on dimmers. Can something be done about it?? TIA!!
  6. D

    Ring Wired Doorbell Transformer Chime advice

    Hi, I have purchased a Ring Video Doorbell in the UK, and am looking to install it. I live in a New build property and the transformer to the Chime is within the Chime unit. Looking at it the wires come through slightly differently to the installation video, and I'm trying to confirm how I...
  7. W

    Old microwave transformer

    Older Japanese made microwave transformer has 3 connector terminals on the primary coil. Haven't seen that before, any help appreciated. It's a dpc-240.
  8. J

    110v fixed wall mounted transformer

    Hi guys is there any regulations regarding 110v centre tapped transformer transformer circuits being used outside (rcd protected) also if the transformer states 3000Va but a continuous rating of 1650Va am I right in thinking it can only carry 15amps before the transformer overloads?
  9. B

    12v transformer

    Hi vent-axia Svara bathroom fan going in zone 1, vent-axia PSU centra selv lo-carbon (12v transforme) question = how far can the PSU be from the fan, i would like it about 1.5 meters from the fan (cable length) or must it be as close as possible (in the loft) to the fan 1.5mm twin+earth cable...
  10. N

    LED Strip & Transformer advice needed

    Hi, First post here - so be kind! I'm looking for some advice about the best option for a bathroom LED strip installation. I'm based in Spain, but British. I'm not a qualified electrician, but have done small electrical projects in the past, such as installing lights and sockets in an...
    • nstead
    • Thread
    • advice led led strip needed strip transformer
    • Replies: 0
    • Forum: Lighting Forum
  11. J

    LED Hooking up 12v LED strips and removing 120v transformer

    Hi all, I converting a van to a camper and wanted lights for underneath the kitchen cabinet. I purchased this led light strip for Home Depot (https://www.homedepot.com/p/Commerc...-RGB-LED-Strip-Light-Kit-DT8800-16F/312590609). The first one I bought with USB connection just wasn't bright...
  12. Spike1947

    Transformer rewind wire query

    Hi I have a Transformer, that needs a rewire on a Secondary windings, the wire that was on it, was a muti-core wire 9 strands, (0.06mm x 9) ( each strand enameled ), soldered together at each end, and laid on top of the primary winding with 175 turns, with a copper tape between the primary and...
  13. M

    Newbie question…wiring a transformer…

    My transformer came in. I’m assuming the “IN” goes to the power cord from the wall and the “OUT” goes to the 12v MR16 bulb? Thanks!
  14. B

    UK What should the voltage be going into a hardwired ring doorbell transformer in the UK?

    Hello Have a ring doorbell which is powered from the mains using the ring branded transformer that came with the unit. Its been working well for about 2 months since it was installed by an electrician and then just failed last week and appears as though no power is reaching it. I used a...
  15. E

    Auto Transformer Neutral

    I'm connecting three phase step down auto transformer. 400V input and 230V output. It's to supply a piece of equipment brought over from America and the load won't be balanced. My question is, is the star point common for both the line and load side neutral connections? I'm leaning towards yes...
  16. J

    Changing from Halogen to LED

    Hi, First time posting on here so apologies if I'm missing any basic information, but hopefully someone can help me as an amateur DIY-er and definitely not electrically knowledgeable. I suspect the best approach would be to get in a professional to help, which I'll likely do but interested in...
  17. S

    Transformer rating when used as autotransformer ?

    It took me ages to find a suitable transformer that didn't cost several limbs, and while my load at the moment is well within it's rating, I'm curious as to what power rating I can assume for this setup. It's not too important because the total load I have planned on 240V is only 160W, so at...
  18. G

    Connecting a low voltage transformer using a external switch?

    Currently I have 4 small low voltage transformers connected to 4 circuits of low voltage yard lights. They are under my deck, and I turn then on and off using switches above the deck. I want to consolidate those transformers into one transformer...
    • GVCCRLM
    • Thread
    • connecting external low voltage switch transformer using voltage
    • Replies: 5
    • Forum: UK Electrical Forum
  19. K

    Bathroom Mirror Shaver Transformer Buzzing

    I have a quick query. I have a bathroom mirror with built in shaver socket and isolating transformer. However, it is not switched and is permanently on and as it is in an en-suite the humming/buzzing noise of the transformer is amplified from within the mirror casing and is annoying. I am...
  20. J

    10 kva site transformer

    Hi got a 10kva transformer that keeps tripping. Im told its about 20 year old. Its fed off a type C 32 amp breaker. Single phase. Did continuity test between windings and all ok. Secondary has a centre tap so is that why I would get continuity between phase and earth? Not worked with much...

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