3 phase

Recent contents Top users
  1. L

    Sizing 3 phase Generator

    Hi Everyone May be someone could shed some insight on the sizing and provide some suggestions: 3 phase Generators (400 V, 50 Hz) have the ability to sustain 250% kVA of its rated kVA at 30% voltage dip. Suppose a machine needs to be powered by a standby generator during a power outage. It...
  2. Gavin John Hyde

    3 phase looped service cut out

    Got a customer with a 3 phase looped cut out. Only use one of the phases and there is likely a second fuse on the adjacent holder/phase. I have asked the DNO to take a look and advise as the customer wants an EV charger. With a looped supply you should get dnos advise first. ENA guidance also...
  3. D

    UK 3 phase supply

    Hi All New member on this forum 1st post i need some good sound advice please I am a maintenance electrician and I have been asked to quote for a 3 phase and neutral electrical supply at 125amps per phase for a chiller unit that is to be hired ,to be totally honest I am out of my depth . My...
  4. M

    What should be the minimum resistance required between 3 phase and grounding (connecting wire to earth)

    Hi I am new to electrical engineering. I want to measure the 3 phase voltage near the water pumpset motors. I have connected phase lines to earth through a diode and six 1 mega ohm resistors (measuring the voltage across resistor). The same earthing wire is connected to ground in my dc circuit...
    • Manjunath
    • Thread
    • 3 phase between earth grounding minimum phase required resistance wire
    • Replies: 5
    • Forum: UK Electrical Forum
  5. robertl

    3 phase 2 speed motor from single phase

    Hello everyone I have just bought a new lathe, (used) its on its way to me from other end of the country now. I have only just realised i may have an issue. The machine is 3 phase and i was intending to go down the VFD route but because its a dual speed motor im not sure i can. See attached...
  6. robertl

    3 phase Rotary Converter Build questions

    Hi All, I am just about ready in my new workshop to buy and start using the 3 phase equipment i will need for my business. The biggest of which will be the press brake rated at 12.5kw max. There will be a few other units but smaller - around the 1 to 3kw rating range, so with that i am looking...
  7. naylorpd

    3 phase RCCB tripped, won't reset

    Hi, in my garage I have a 3 phase RCCB that has tripped and I just can't get it to reset, even with all the downstream MCBs switched off. Bit of a nuisance really as mother in law has no power to her flat above the garage and the garage door and front gate don't work. I tried uploading photo...
  8. E

    3 phase supply to garage cable spec

    Hi - first post, so I hope I get the tone right. I do pay professionals to do the work, but have a technical background and like to understand what's being proposed and why. My house has a 3 phase supply. Everything in the house runs off a single phase. We've just had a 7kW car charging point...
  9. L

    UK 3 phase supply earth concern

    Hi all, Background- I rent commercial premises for a small cabinetmaking business. Lots of 3 phase machines and 240v circuits. The site is on a farm where the main supply enters the landlords unit to a distribution board where it is then split to various rented units. That board looks like...
  10. A

    3 phase gen set neutral/earth

    Hi guys/gals I have been asked to install some 230v sockets and lights in an old refrigerated trailer, that would be used as a store on a quarry site. The trailer has a 3 phase generator built on to the side to originaly work the refrigeration unit, but as everything involved with the...
  11. H

    208V Single phase wiring from 3 phase 4 wire disconnect

    I work in a location that was once a Machine shop showroom. We have 208/230/480 etc in the building. I need to install a temperature chamber that requires single phase only 208V or 230V supply. I have a 100 amp rated disconnect literally in the exact location this needs to go. I've read for...
  12. Dilwyn

    Can. I run 3 phase motor off single phase 4 wiresABC

    Can I run a 3 phase motor. Off single. Phase 3 Black wires ABC 1 earth wire. Any info. Would be great thank you.
  13. S

    Question regarding eddies currents 3 phase

    I have to supply a 3 phase + neutral circuit but I have to run it through a contactor. The contactor is 3 phase no neutral and will be bushed onto the left side of the board with 2 bushes (one for feed, one for load). The other side of the board is bushed onto some trunking where the load will...
  14. D

    Draw a start/stop/retain relay control circuit for a 3 phase drill machine

    Hey, I'm just wonder if I can get some feedback on this drawing that I've made? any feedback will be very appreciated thanks in advance.
  15. N

    types of earthing to be carried out for 3 phase standby generator which is separately driven system

    3 phase standby generator of rating 30KVA is to be install in the lightning prone area. The utility main line is TT arrangement where neutral point is grounded with 3 phase and neutral wire provided to load system. A separately driven generator ( standby generator) is also needd with TT...
  16. James

    3 phase alternate supply

    I don't normally get involved with domestic work but this job is for a family member so I cant Simpley say no. the house is a large property with a 3 phase 100A supply. I think the earthing is TT but not 100% sure of that yet. customer has bought a 12.5Kva generator to use as a backup supply...
  17. K

    Japanese 3 Phase Wiring

    Hi, I hoping someone can assist me. I’ve taken delivery of a control box from Japan, which is powered by 3 phase at 200v. The wires are red, black, white and green. Any ideas how or if I can wire this to make work in the UK via standard 240v or 110v please?
  18. F

    3 phase motor dropping voltage with load.

    I have a 10 HP -230 volt 3 phase hydraulic press brake. I just installed a new 40 HP rotary converter panel with used WEG motor. The problem i am having is the volts going into the press during a load is dropping from 245 to 195-200 volt. Which means i'm loosing power of the hydraulic system...
  19. D

    3 phase to single phase with no VSD

    So basically I’ve got a 3 phase motor that I’d like to use to hook up to my cable stripping machine. The motor was salvaged from an old site and I know it works. I know the easiest way to connect it up to a single phase supply would be to use a VSD but those are expensive. I was wondering if...
  20. M

    Question Regarding a RCD on 3 Phase, with a single phase sub-circuit

    I am installing a micro-brewery in our barn in France; as you can guess that, means that I am a brewer, not an electrician :-) I did 'fess up to being a DIYer when signing on. The brewhouse runs on 3-phase, both for the 12kw heating elements and for the pumps. All use a delta configuration i.e...

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Tags

advice aus cable circuit course earth electric electrical electrician hello led light lighting lights looking new please question rcd socket supply switch testing training wiring
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
DIY Forum
Contractor Advice Forum
Tilers Forum
Electrical Advice
Tiling Advice
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock