transformer

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  1. 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.
  2. 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?
  3. 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...
  4. 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
  5. 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...
  6. 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...
  7. 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!
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. 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
  13. 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...
  14. 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...
  15. Rocboni

    Transformer testing

    Hi All, So i was asked to look at at large 3 phase to 120V transformer around 85kVA - it was tripping the MCB instantly (it never used to) I insulation resistance tested the primary windings to earth - >2000ohms I continuity tested the windings and got 0.46 ohms per winding, they were all...
  16. Z

    Door Bell Transformer

    I hoped someone might advise please: I'm replacing my ancient ( probably 40+ yrs old ) door bell transformer with a British General unit mounted in a Wylex housing, fed via a switched fused spur. The previous unit had a switch only, it was fused at the consumer unit connected into a lighting...
  17. S

    Transformer from socket wire to trickle-charge Ring Doorbell - Is this safe?

    I have a Ring Doorbell which has no Chime, but which is trickle charged via a wall-mounted BG DIN Rail transformer in a Hagar casing which diverts power from a socket cable. Firstly I have a electric check coming up and I wanted to know if this was safe or is it likely to be picked up in the...
  18. C

    110v transformer

    Installing a wall mounted transformer. Single phase with 2 x 16 amp sockets Input connections are 240v 220v 0v 10v Output/secondary side 55v 0v 55v Whay would the connections regarding the input/primary side live neutral earth. The 10v is throwing me off
  19. N

    Replace Friedland Type 4 chime transformer for Ring doorbell

    Installing a Ring doorbell - followed all the instructions and the ring is not powering on. I believe the issue might be the transformer in the chime box isn't powerful enough for the job. Ideally I could just replace the transformer pictured below with a newer unit which has the required specs...
  20. D

    How to improve the cooling of 2000 kVA ONAN transformer

    I have a transformer with ONAN cooling (natural ventilation like figure) and 2000 kVA that works always near full capacity, in summer it over heats above the limit. to improve the cooling and prevent reaching the oil temperature limit. I decided to place an exhaust fan and an inlet fan like...

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