volt

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  1. P

    12 volt bulbs on 240 volt circuit

    Hi just seen the bulbs on my outdoor Xmas lights are 12 volt 3 watt on 240 volt circuit. How can they be working? They do!
  2. D

    120 Volt Light on 277 Volt Line

    I had a question I could really use some help with. I work on Commercial Properties. We have been having some light fixtures blow, and been having an electrician come and replace them when they do. As you know that can add up over time. So I decided to take a look at what has been done in the...
  3. B

    Wifi switch with volt free contacts.

    Anyone know of a decent (and cheap) WIFI switch powered by 230V AC, but with isolated switch contacts? I've used Sonoff BASIC R2 for a few things, but these only give a switched 230V output.
  4. S

    what resistors needed for 24 volt switches

    Im trying to make a Star Wars Prop for a course project where the dealine is comming up very fast in days and I need to do the report so really urgent On the prop whihc is a portable control box Dual control box (Left side control panel, a tower in the middle and a right side control panel On...
  5. A

    Can I use a 6 volt regulator for a Cadillac flathead on my Ford F-600 truck also with a flathead V8?

    Can I swap a 6 volt regulator from a Cadillac with flat head V8 into my Ford F-600 which also has a 6 volt regulator and a flat head V8?
  6. J

    Volt drop question and advice

    Hi, I'm looking for a bit of advice on a volt drop query we have in our office. I'll explain the scenario and I would really appreciate any opinion's and advice. We were asked to wire a 3ph 100A supply into a barn, that would later be used to feed a new build house. The meter and supply comes...
  7. L

    What could cause a Fluke T2 volt tester to dance up and down 12-230v

    New batteries ... There is a dimmer attached to the light circuit . Full power its fine .turn down , light flashes , volt meter LEDS dance up and down. 2 x dimmers tried .
  8. G

    VFD -under volt at source fault

    So earlier this year I obtained a large machine with a couple of 3 phase motors in it, and the rest single phase. I bought a VFD, correctly wired it up, and while the machine ran with some functions, it also reported "undervolt at source" I had bought a VFD with a maximum output of 380 volts...
  9. tony9i9i9i

    6242B Current Carrying Capacity and Volt Drop /A/m

    Hi, go easy on me please, I've just returned to the trade, well I am about to, I received my Gold Card last Thursday. I've been gen'ing up for a couple of weeks going through the regs book, watching some fantastic youtube videos, and working through cable calcs and looking at products and...
  10. S

    220 volt supply problems

    Hi guys. I was a commissiong technician before I retired. Hardware and software industrial automation. Miss the work but not the endless travel/ airports hotels etc. Those that know, know what I mean. I retired to Thailand 220 - 240 volt single phase 50 hertz supply here. Im used to 3 phase or...
  11. O

    Volt drop, lighting v non lighting

    Why is this still a thing, just done a quick calculation with the TLC volt drop calculator and if its a non lighting circuit the recommended size is 6mm but if there is lighting its saying 10mm. Quite a cost difference. I get this in the olden days when there were filament lights that would go...
  12. M-B-Electrical-Services

    20 Volt oddity at recent rewire

    Hi all, I have an unusual issue with a recent rewire I have just completed which I hope you guys can assist with. For background, this is a complete strip out and rewire of a domestic property (bungalow) with an unusual but appropriate reference method. For this rewire, due to the fact that it...
  13. R

    3 phase (220 volt) pizza oven to 1 phase (220)?

    How can I convert a 3-phase (220 volt 5.6 kw) pizza oven to 1-phase (220) 2 heating elements, no motor.
  14. K

    Build a Simple 5 volt Charger

    Dear Sir, I'd build a simple voltage divider charger with 1 Amp diode from 4.8 AC - DC adapter (500 ma - output volatge - 4.15Volt) to charge my two AA battery. My Battery finished charged was 1.25 (Sony 4600mAh), but it can only be used within half day. I suspect It may not enough...
  15. HappyHippyDad

    Understanding 3 phase volt drop.......

    I am trying to understand 3 phase volt drop. I understand single phase VD. Lets say we have a 70 meter run of 35mm, 5 core cable from the supply to the 3 phase consumer unit. From the 3 phase consumer unit we have 1 x 16A triple pole MCB (so that's 16A per phase). which has a run of 12metres...
  16. Lucien Nunes

    Reported content: Post in thread 'Domestic - Power Jack 12 volt LF inverter'

    Post in thread 'Domestic - Power Jack 12 volt LF inverter' by mainline has been reported by Lucien Nunes. Reason given: Content being reported:
  17. M

    Volt drop calculation on spurs off of a ring.

    Hello, New trainee electrician so sorry if this is a dumb question I feel confident with calculating the volt drop for a ring and radial circuit but am getting confused when in comes to incorporating a spur and and just wanted some help to confirm if I am calculating the volt drop at a fuse...
  18. D

    Power Jack 12 volt LF inverter

    I bought Power Jack 12 volt LF inverter few years back, Can I modify this inverter to 24 V or better 48 V inverter? Possible???
  19. Mark W

    Classic 275,000 volt, 15,000Mva JW420 bulk oil breaker

    The above picture was taken at the festival of Britain and it shows a BTH bulk oil breaker, for me this represents the development of the super grid and how Britain was able to assist the world in developing higher transmission voltages. These units are still in service and in only a few years...
  20. S

    Can I trigger a 12 volt relay with 6 volts?

    Trying to power led work lights on a piece of Farm machinery. Only have a 6volt trigger coming from the control box for the work lights. Is this enough to trigger a 12v relay?
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