transformer

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  1. S

    Trying to figure out alternatives for remote accessory structure

    Hello, this is my first post here. I have a little experience with most types of household wiring through a decade of DIY remodeling, and building a new house but am not an electrician. I'm researching options for getting power to a small cabin in the woods behind a house (Oregon, USA). It...
  2. Z

    What are the causes of unbalance current during no load test of transformer?

    What are the causes of unbalance current during no load test of transformer?
  3. D

    Expert welding transformer

    Hello everyone, friends. How can we understand whether the windings of the transformers we use in spot welding applications are intact? The schematic on it is as shown in the attachment. How can I tell with a multimeter what connections are and what they do and whether their windings are...
  4. B

    Will any led 12v DC transformer be suitable for 12v DC Extractor fan

    Will any led 12v DC transformer be suitable for 12v DC Extractor fan? Considering 4w rating.
  5. Q

    Transformer and MCCB Questions

    Hello All. New here and will be flooding with terrible questions for my own knowledge. Just trying to learn so some questions like this maybe very simple and I'm just daft 1) On site we have a Aux Transformer, From the LV side of the transformer we have an MCCB Board with a few circuits. Now on...
  6. N

    What are these transformer looking things I have been seeing?

    Hi. I have seen these transformer like things on the higher voltage powerlines when I go to regional areas in NSW and I was wondering what they are? I can't remember seeing them where I come from (Central Coast NSW) They couldn't be transformers because they are not connected to any other...
    • Naithi
    • Thread
    • ausie elec looking these things transformer
    • Replies: 10
    • Forum: Australia
  7. N

    Repurposed 3.2 KVA site transformer drawing 56A

    I never did like transformer theory in my degree course and that was 40 years ago. I'm a boat builder now and we tend to have big battery banks and thus big chargers with all sorts of dodgy stuff going on. I have repurposed a series of power transformers to be used as the basis of high power...
  8. milan5baros

    Replacing transformer for halogen spotlights

    Hi, I currently have halogen downlighting in bathroom each light with an individual transformer. One of the transformers has gone now and I have tried replacing with a new one which I believe to be like for like however it seems to make the odd crackling noise. Could this be due to being...
  9. M

    Can I safely replace a B-Curve breaker with a D-Curve breaker?

    Hello, I am an American living in Germany. I have some US appliances (120v) that I want to use, so I bought a 5000 Watt step down transformer. Unfortunately, plugging in the transformer usually trips the breaker. More than 1/2 of the time, but less than 3/4. When the breaker does not trip...
  10. N

    reversing a step down transformer to step transformer

    Hi there im in training, but my question is using using a 3 phase 480v delta to 208/120 delta transformer 30kva and wiring it in reverse for 208 primary input for 480 volt secondary . My motor requirements is 460volts with the motor being 10hp,(14amps) but it has variable motor controls which...
  11. opyate

    Friedland 752 transformer giving higher than expected reading

    Hello, We moved into an old house (Wimpy 1957) and the doorbell doesn't work. I read the AC voltage on the old Friedland 752 transformer, and it's at 13V, not 3 or 5 or 8 as per the options. The solenoid on the bell might be getting too much power. Why might it read 13V? This person also...
  12. F

    New Transformer For Lamp

    Hi I need help in replacing the transformer on my favourite šŸ˜ lampā€¦..it just doesnā€™t stay on for very long anymore ā˜¹ļø Would I be ok with a 2 amp as I canā€™t find a 1.66 amp? Need to wire it in to the on/off switch on the lamp rather than female/male adapters??? Any help/advice greatly...
  13. K

    How to bypass control board in landscaping transformer

    Hi, I have a low voltage landscaping transformer. The control board is bad so it cannot be turned on. Iā€™d like to bypass the controller and connect the wires directly to the transformer itself (the toroidal). However, when I open it, in I see the white (neutral) and black (hot) wires input to...
  14. Wolf865

    Cost of AMP ATR-150SL LV Transformer and module

    Question, How much should someone be paying just for an AMP ATR-150SL LV Transformer with the dusk/dawn timer module? How much would/should labor add to that? Landscape contractor wants to replace FILs LV transformer with one as a replacement for his dead unit. Not familiar with the brand...
  15. Carolina

    Finding transformer VA rating

    Hello everyone. I'm in training but we haven't seen transformers or how they work yet. I have a transformer here I'm trying to figure out. There are no labels or inscriptions on it. Primary side has 3 wires: black, blue (AC in), yellow (AC out?) and Sec has red and blue. Labeled USA 18AWG so a...
  16. Wolf865

    Landscape Transformer - Wrong Replacement!

    Father-in-Laws old landscape transformer went out so went to Home Depot to get a new one to install that had a countdown timer once the photocell turned it on in the evenings. What HD send me home with was an Intermec Mechanical Timer. Long story short, hooked up a 120V timer on a 12V system...
  17. R

    Repair a site transformer ?

    I'm repairing a 110 v 3 kva site transformer that the base cracked and all the sand leaked out, can anyone tell me exactly what the sand is there for and can I replace it with any dry sand or even just leave it out? The transformer won't be used on site but at home.
  18. M

    What kind of transformer is this?

    Hello everyone, I would like to know what kind of transformer is this so that I can buy a new one, I am attaching some photos. There is no writing on the transformer. It is located in a furnace for goldsmith use, in which there is a Crydom D2425 relay and a Fagor B40 C5000 / 3300 rectifier...
  19. E

    Voltage drop when transformer on site

    I've got what may be a stupid question but the only answer that I can come up with is 'because it says so in AS 3000', is there a reason why you only get 5% voltage drop when your transformer is on the site but not dedicated to the site? To me, the physics would suggest that it should be no...
    • electricaljc
    • Thread
    • ausie elec site plan transformer voltage voltage drop
    • Replies: 0
    • Forum: Australia
  20. stanguy

    Monorail transformer recommendations

    Hi all, We have a monorail in the kitchen with 6 lights, currently 24v halogens (MR16 GU5.3). The transformer is tech lighting AT6024T. I want to replace the bulbs with LEDs, but 24v ac bulbs are hard to find. Any suggestions for replacement transformers so I can put in 12v bulbs instead? I...

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