voltage | Page 8

voltage

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  1. C

    Recommendations for voltage tester with proving unit

    Hi everyone, Which proving unit kit would you recommend? Obviously would be better to don't spend a fortune. Kewtech, Megger, Fluke o Martindale? Thanks
  2. Z

    Proving units maximum voltage

    I decided,having lived with using a live circuit, to buy a proving unit. I opted for a Kewtech Prove 4 which covers 5 voltages between 690volts and 50 volts. The device starts at 690 volts which is ok for my Megger 2 pole tester. My fluke clamp meter has a limit of 600 volts. The second problem...
  3. M

    How come some rcds dont trip when testing voltage to earth

    So I recently installed a new circuit to my loft as a dedicated burglar alarm and cctv circuit. When checking polarity and voltage with my test lamps/voltage indicators it didnt trip the rcd when testing live to earth and neutral to earth. It's an rcbo which works when using the functional test...
  4. S

    Connecting pulse sensor to lower voltage DAQ

    Hello there! Simple question, I have energy meters like those: https://www.zelec.fr/details-compteur+d+energie+monophase+direct+45a-155.html this one is on a french website, but the operation is simple. This one in particular uses an optocoupler 27 Vdc for the pulses, but what is the voltage...
  5. W

    How does an appliance have a voltage through it??

    Was recently at a job where the dishwasher was getting a voltage through it, checked the spur and the cpc was disconnected. Understand the reason that’s it’s became live is because the cpc was disconnected, what I want to know is why has that caused the dishwasher to have a voltage through it...
  6. D

    Best way to step up voltage for electric motors

    We've been tasked to run power to some electric motors on some pumps and the building is currently 120/208vac 3ph. The motors are 230/460vac 3ph. Instead of getting new motors that run on 208vac, they're asking if we can get a transformer to step up the voltage from 208vac 3ph to 240vac 3ph. The...
  7. K

    Need Transformaer secondary voltage and amps rating

    I need a help from members. My transformer from JBL Sub Active woofer has failed.It 230 V primary and secondary no voltage details mentioned.It has five wires and center is ground. In Service manual indicates ,First set two wires after bridge rectifier /Filter shows +15vdc,-15vdc (capacitor 35v...
  8. K

    Reported content: Post in thread 'Domestic - Voltage fluctuations on a 1000VA 600W UPS with 40% load when on battery'

    Post in thread 'Domestic - Voltage fluctuations on a 1000VA 600W UPS with 40% load when on battery' by kuddoo has been reported by kuddoo. Reason given: Content being reported:
  9. K

    Voltage fluctuations on a 1000VA 600W UPS with 40% load when on battery

    Hello guys, I live in Europe (240v) and I've recently purchased a Line Interactive AVR 1000VA 600W UPS with in order to protect my new PS5 gaming console and TV. The PS5 (max 200w) and 42" LED TV (max 120W) are the only things connected to the UPS. If a video game is playing on console (to draw...
  10. B

    Non contact voltage indicator - upgrade

    Hello electricians, My current ncv indicator I think has had it, and wanted an upgrade. I’ve seen this Sagab VOLTSTICK LV50 AC Voltage Detector | eBay - https://www.ebay.co.uk/itm/Sagab-VOLTSTICK-LV50-AC-Voltage-Detector/193808447576?hash=item2d1fe23858:g:jSQAAOSw-wZf2zTy on eBay and wanted...
  11. M

    Voltage drop/2391

    Hello im currently doing the 2391 online I have failed 4 times but I realise there are variations to the voltage drop calculation could someone help me to know what the variations are to the voltage drop calculation I know the basic 1 thats fine but its the other ways for instance multiplying or...
  12. Dartlec

    Voltage tester with LCD and spring loaded sheaths

    My cheap and cheerful voltage tester packed up just before Christmas, so need to replace it (It lasted longer than the more expensive one I had before that broke at the cable joint to the second probe). As we know, GS38 tips can be a pain, so I normally keep them off so that I can actually test...
  13. S

    How to use a two pole voltage tester?

    Hello guys, just looking for a bit of advice, I’d like to be able to use a voltage tester at home when required. Are there any good videos or tutorials? thank you
  14. J

    which is more accurate testing, unplugging an injector's connector to test voltage or back probing while the circuit is activated?

    The injectors are receiving voltage and are clicking (audible test), the resistance is amazingly consistent among all 4 (13.8 ohms each). Continuity is excellent. When I unplug the connectors, turn the circuit on (without starting the car-ignition on) and DMM - probe to one terminal and DMM +...
  15. S

    Voltage imbalance

    Hi Had a customer ask me to look at light switch as they believed it was faulty Checked the voltage 230v live to cpc 140v between live & neutral 25v between neutral and cpc at the light switch incoming cable. All the other lights have just been replaced and are working fine and the...
  16. T

    Bare 50Hz AC 3 Phase Bus bars...what is safe voltage to use

    Hi Hi, We will have isolated three phase bus bars. Fully Mains transformer isolated. (mains input is 240VAC phase to...
  17. K

    Why low voltage (40 Volts) at outlet

    First, I have to apologize for the following really long description. I guess if I draw a diagram, most of the text below will disappear. I will draw diagrams to attach to this topic. I need advise on this situation (40 Volts at outlet). When I plug Xmas light in one outlet near the patio...
  18. N

    Voltage indicator

    Just wondering why a voltage indicator pen picks up voltage about 30mm away from a FCU but has to almost touch a socket or cable to indicate ? Cheers
  19. S

    Voltage Detector

    Hi I'm having a new front door installed soon and will require to re-fit the doorbell and burglar alarm door contacts. I can isolate the current by use of one circuit breaker switch that does for both the bell and burglar alarm but I wish to ensure no current by use of a voltage detector - just...
  20. E

    Cycling Voltage on light fixture

    I have a fan light fixture which I wired more than a year ago. It has three dimmable LED light bulbs on the bottom which recently started exhibiting strange behavior. Last week the lights started dimming and brightening on a regular cycle, roughly every 5 seconds. The lights will start our...

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