voltage

  1. M

    voltage tester show sequence of lights.

    After some advice please, I`m gas safe registered and have to do safe isolation to TB118. It`s a new build site and the fast blow fuses were blowing on the boiler; the spark said it was a problem with the boiler. Put a temp on the boiler and it works. On doing a dead test on earth to live on the...
  2. Shahriar

    USA Outside Wiring Voltage Tolerance

    Hi Friends, I bought a house and trying to add lamps to the outside. There are cables wires all around my stucco walls and the end of them just lie close to a plug. I was going to add a plug head and simply put them into the plug and also bought 8 6W lamps 110V that will be added. I was...
  3. R

    USA Power Panel Changes Voltage with Branch Circuits

    I have a Single Phase Power box for a townhouse. When I read voltage across the Hot legs (A) and (B) to ground I get 123 volts with the main breaker turned off. With all the circuit breakers turned off and powering up the main breaker to the panel I still have 123 volts across both (A) and (B)...
  4. I

    Rio and BHP specs for unsupported cable allowance and Voltage drop?

    Hi senior members of the forum, I need advice on couple of questions about Rio and BHP specs for electrical installation purposes. What is the minimum allowance for unsupported cable coming out of cable ladder. This is for install of a genset trailer to load. The cable will be going through...
  5. J

    Selectable Voltage Sensing relay 0-18V AC

    I was wondering if I could get some help on trying to electrically solve this idea I had. I was wondering what the best way would be to set the maximum voltage limit from a variable AC transformer so that it could never exceed a selectable predetermined voltage and if it did, would just force...
  6. P

    USA voltage drop running 50 amps 350 feet from service pole.

    hello. i need to run power to a cabin that is 350 feet from the service pole in our driveway. the problem is voltage drop. the service pole is 150 feet from the transformer so total run is 500 feet. is it possible for a diy'er to purchase a small transformer that would bring the voltage up? (i...
  7. S

    Voltage optimizers any good?

    Hi. Are they any good and how do they work? Do they lower the voltage across the board? If so what about appliances that use more than 220v? Thanks Spynage
  8. N

    USA Low voltage from a 120 v breaker box, sometimes

    I'm taking a look at the 120v wiring in an old travel trailer that I recently bought, and plan to live in full time soon. It has some quirks that I will explain below, but first here's a pic and diagram of what's going on: Here's the breaker box as it sits now And of course, a diagram to...
  9. K

    How does Touch voltage work without RCD protection

    Hi everyone I asked my assessor about touch voltage and he was not keen on explaining properly and gave me a rough answer which made me think probably he was not sure himself or was hiding it. basically my understanding is afcourse that how 30mA RCD works to limit touch voltage to 50V is by...
  10. P

    11kv pole loop fault, over voltage ?

    Hi first post, I'm a pretty well experienced electrician of 15 years now working solely in Agricultural electrical We have a lot of voltage sensitive equipment on our farms which run auto ventilation and alarms ect Today we had a huge bang from the 11kv pole transformer on one of our sites...
  11. S

    USA Aerator voltage questions

    Hi everybody, we are currently renting a aerator system from Culligan and we have been trying to replace it with a unit we purchased that was used, but I have some questions about how to setup due to different pump voltages. The current system consists of the outlets shown below which are both...
  12. G

    What is this small voltage between spa water and natural earth ground?

    I've noticed a strange voltage reading between the water in my spa and natural earth ground. The reading varies between .35VAC and .7VAC. My wife noticed a small shock from the water after inserting her finger in the spa while standing outside the spa. I tested the GFCI and it is working...
  13. T

    Trimming voltage.

    Client of mine has himself about 195w of RGBW LED strip and a controller rated at 288w (24v) šŸ˜† What's the easiest way to bring it in line, stick a 0.1 ohm resistor in line? Do all 4 elements of RGBW strip ever get used at the same time?
  14. E

    Australia 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...
  15. Knight499

    Voltage Stick Advice

    Hi Guys Im looking to purchase a new voltage stickā€¦would appreciate any input/recommendations on the best one to buy? What do you guys use? Thanks
  16. S

    Fluke voltage testers turning noise off?

    After some scoundrels robbed all my stuff I have had to get a new voltage tester. Two in fact. A fluke t150 and a a fluke t110. But unlike the ones I had these don't seem to have the ability to turn off the annoying bleeper. I have tried holding the light button for two seconds but it's no good...
  17. rbbmcghee

    Low voltage in 120 circuit ?

    I have a voltage of 23v coming through a light socket in my house (There is a rely that is likely the cause but Iā€™m not certain 1950s house) when I look up charts on how much energy it takes to power a light bulb itā€™s very low- or Iā€™m not understanding something. I know the resistance on the...
  18. S

    High Voltage advice (11KV)

    Hey all, looking for a bit of industrial electrical advice, I'm kind of stuck between a rock and a hard place at the moment, the company I work for are pressuring me to work on HV (11KV) against my will. They put me through a 4 day AP (approved person HV) course and as I was the only person who...
  19. D

    USA 115vac line tests with proper voltage, powers a low watt bulb but will not run a drill.

    I have a 115vac line that tests with proper voltage and will power a low watt bulb but will not run a drill etc... Line from main panel to barn is 10-3 copper on a 30amp breaker. Sub panel has two 20amp breakers one for lights and one for plugs. Wire was run 30 years ago and ran a vacuum...
  20. Brqchi

    Can voltage transformer and frequency inverter replace frequency converter?

    Hi. I live in Kurdistan(iraq). I bought these four devices from the United States: @BLENDER: 120V, 50/60Hz, 12A @food dehydrator: 115V,50/60Hz,600W @food dehydrator: 110V, 60Hz, 1500W @Vacuum sealer: 120V, 60Hz, 1.06A As you know Iraq's power is 230V-50Hz, So I have to change the voltage...

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