volt

The volt (symbol: V) is the unit of electric potential, electric potential difference (voltage), and electromotive force in the International System of Units (SI).

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  1. 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.
  2. 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?
  3. 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 .
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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.
  9. S

    12 volt / Hydraulic loading arm prolonged use

    I have a loading arm on a vehicle powered by a hydraulic motor powered by a 12 volt motor. The motor is initiated by proximity switches on the hydraulic spool valves. In normal use the dedicated crane battery is charged via a split charge relay from the vehicles alternator between destinations...
  10. 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...
  11. 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???
  12. 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...
  13. 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?
  14. O

    What kind of Schottky diode should I use to parallel wire 9 VOLT batteries together?

    I need help knowing what kind of schottky diode to use to wire parallel 9 volt batteries to make a really long lasting battery. I want to wire together like 9 of them. is it possible?
  15. B

    220 volt, three phase element

    I have a 3 phase element for a steam generator but the element is a 220 volt element. the diagram is in Chinese which i cant read. on the diagram it shows three phase delta connection for 380v and three phase star connection for 220 volt with a neutral connected to the star point. My question is...
  16. M

    Sparks when trying to test golf cart batteries with a volt meter

    I bought a used golf cart a few days ago which had their batteries replaced last year. They hooked up an am/fm radio to it and it worked fine when you flip a separate switch. There is a “Tow” switch by the batteries that I was told to switch it to when not using the cart so there wouldn’t be any...
  17. D

    New Transformer Humming Noise on Smart Doorbell 24 volt AC - How to fix this UK

    Hello All, Incase this reaches other non UK residents to confirm this doorbell has been fitted in England it regard to electricity distribution feeding the circuit This is the first I've posted and I'm certain many on here will have a good explanation and remedy for this problem. I've made...
  18. G

    Curr/Volt profile in circuits with Drop-in T8 LED Replacements vs normal T8 Fluorescent?

    Hi, I'm troubleshooting a 'smart switch' issue which is connected to an existing fluorescent 4' 2-bulb (T8) fixture where I have replaced the fluorescent tubes with LED drop-in LED T8 tubes (no re-wiring necessary, so ballast is still in the circuit). Vendor indicates that the switch may be...
  19. MWhale

    NFPA70E battery 100 VDC vs OSHA 50 volt standard

    I just finished the NFPA70E 2021 online training. As far as I understand it the NFPA 70E is OSHA compliant but, I feel like the guidance between them disagrees when it comes to the shock hazard of DC batteries. I work with EV type battery systems 28V to 800 V so, this is important. OSHA general...
  20. P

    12 volt timer delay wiring

    hi guys,i just need a little help wiring a timer delay relay. anyone?

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