voltage

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  1. A

    choosing cable voltage rating

    Hi, for a single phase LV installation, how do you determine whether to use 450V/750V or 0.6/1kV cable. Thanks
    • andrel
    • Thread
    • ausie elec cable installation phase rating single single phase voltage whether
    • Replies: 5
    • Forum: Australia
  2. H

    Transwave investor voltage

    Does anyone know what the voltage across the phases on a single phase to three phase Transwave investor and would it or should it energise a 415 volt AC coil on a DOL starter. Any information would be greatly appreciated
  3. P

    Voltage Drop at an RV Park

    First, I really appreciate any feedback you can provide. Its awesome to have a group of people that have a passion for this! Our RV Park has a transformer dropping service down into three 200-amp meters (single-phase 240V service X 3). From each of these three meters, we have an emergency...
  4. K

    UK Voltage between gas bond to neutral

    So up until this morning I thought I had seen most faults in an electrical installation, but this one today has me stumped and I’m not sure if I’m being stupid and the issue is staring me right in the face! long story short we went to a domestic property with a TNCS to install a supply to a...
  5. N

    Neutral to earth voltage

    Favour for a mate has turned into a nightmare. Really appreciate any comments on the below! Was asked to look at some sockets which have apparently been "sparking"....... 17th edition board. 100amp/30ma RCD as main switch and only additional protection for 11 circuits. Unsure if that conforms...
  6. N

    Voltage drop calc

    can anyone tell me if this is a correct way of thinking i have 6 Cleaners outlets off a !6a rcd, total run length is 55m 6mm feed to first point is 30m would give me voltage drop of .78% (using half the breaker load according to exception 1 on page 163 of as 3000:2018) then run a 2.5mm for...
  7. C

    Low voltage DC through AC wires?

    I have a friend that owns a local restaurant. He's renting a building that is somewhere around 30 years old. The building currently has a sign with lights above the signage on both sides, shining down to light up the sign. And there's a switch at the bottom of the pole that they can use to...
  8. D

    Whats causing a voltage increase on a water pump?

    Hello. I'm doing a favour for a farm friend, they have a water pump down a bore hole thats been slowing down recently. The single phase 0.55KW motor is situated 40m down the well and the controls are at the distribution boards. The voltage going to the single phase motor is reading L-E 247 &...
  9. E

    No voltage on live-neutral but voltage on live-earth

    Hi there I recently replaced the downlight fittings in my bathroom so they are now GU10 LEDs (previously they were MR16s). The lights are IP65 and connected to a 30mA RCBO. The light was working fine until recently. I was fiddling with the light fitting to correct the ceiling which had been...
  10. P

    Relay switching max voltage across contacts

    Thought i would put this out there for any experience faced with this design issue. TP Immersion heater 11KW, has built in contactor, coil voltage 400V I want to bring in the immersion heater via control system and ideally not alter the immersion heater package. The control system can operate a...
  11. J

    Voltage drop on rgb LED strip

    Hi! I’ve installed an rgb strip light to a friends house with a dropped ceiling and I did expect some voltage drop but not as bad as it is, the problem I have is 1. I have ran 2X 2 core 0.75mm2 cable from the carcass unit where all the sockets and less driver is in, into the wall and comes up...
  12. D

    need to solve voltage drop over long run

    Ok so at some point I'm going to need to run another leg, until then. I have a main panel, 230v 80ft run to a we'll & pump, then a 900 ft run up to water tank and a pressure pump with another panel. Then a 120v leg off that that I want to plug an RV to. All 10 gauge 30 amps. With such a long run...
    • dedwrinkle
    • Thread
    • drops long voltage voltage drop
    • Replies: 19
    • Forum: USA
  13. Markyd

    Help needed finding low voltage led lamps

    Hi everyone..Help needed finding some low voltage led lamps that will run off of a 12 volt transformer not a driver,as the previous so called sparky has made all the transformers impossible to get at without tearing the ceiling apart. Any recommendations will be appreciated,
  14. UKMeterman

    Poorly ten year old 10 panel installtion poor output in the afternoon

    Hi, This is a 10 year old 10 panel installation, recently output has been droping and somtines reaching zero mid afternoon. I think it is a sunnyboy inverter. Does it look like a panel, inverter or high mains volts? Could I have names of installers in West Yorkshire who may be able to help. Thanks
  15. J

    If you drive a metal rod can you use it as a reference to measure voltage

    If I was to drive a metal rod in the ground and measure between live and the rod will I get a reading? ( I’m still studying)
  16. H

    altivar 71 output voltage

    hi guys hope you all doing good so here my question the input voltage of the VFD (altivar 71) is 400v but when start in mode run the output voltage is only 310v is it logic i think no i appreciate your cooperation an advance thanks
  17. M

    UK Voltage drop and design

    Evening everyone I've a few questions and it would be helpful if someone could answer them but also point me in the right direction for the answers so that I can mark the places for future reference. I've just fitted a small garage unit in a house to allow me to power 3 double sockets in the...
  18. gazdkw82

    Voltage on light circuit when off

    Friend of mine has phoned. He needs my help because his lights in the hallway keep flashing dimly whilst in the off position. He has measured nominal voltage when the lights are turned on and 50v when the lights are turned off. I dont have much information to work with yet but thought I would...
  19. B

    Cavity wall access from Loft to 2nd floor for low voltage cable.

    Hi guys, I know this is technially not a mains electrical question as it's regarding network cable (CAT7) rated for inwall installation. But my question follows the same theory. I'm looking at dropping a few network cables from the gable end of my wall in the loft down into a room on the 2nd...
    • Beefy
    • Thread
    • access cable cavity floor loft low voltage voltage wall
    • Replies: 19
    • Forum: UK Electrical Forum
  20. W

    Socket voltage for a 120v appliance

    Hi, quick question. My wife had a small kiln installed by an electrician some time back. The kilns setup or needs are 15amp/120v. The outlet was damaged and I'm switching it out, but i only have a outlet that is 20amp/250v. Is it safe for the kiln to be plugged into that outlet? My understanding...

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