supply

  1. L

    N - E Fault on TNS Supply?

    Hi All, Right, I have a very strange fault occurring so I'll start from the beginning. I have recently carried out a consumer unit change from an old rewireable to a new split load RCD protected consumer unit. So I had changed the board and put new meter tails in. I have tested all the...
  2. D

    Off grid DC supply in domestic.

    Just thinking! dangerous I know. but I want to get some pv panels up in my home, but thought about setting it up without the inverter or giving back into the grid. id use it for totally resistive loads like a storage heater or water immersion. Storage heater would be old style without the...
  3. D

    EV charger considerations on TT supply

    Hi all. Will have to forgive me for enquiring about basic question but would rather be sure of all considerations than not. Went to view property for potential EV install yesterday. On viewing intake of property I realised supply had been converted from PME to a TT supply. I'm unsure why they...
  4. B

    2 Phase and neutral supply ??

    Hi All Question regarding 2 phase supplies. Came across this at a farm house, supply is in 3 phase and neutral to the main dist board, then from the 3 phase board at the farm house out to the garage is a 4 core SWA. They have taken 2 phases and neutral from a 63amp double pole MCB at the farm...
  5. D

    Three Phase Power supply

    Greetings I work for a client who has recently negotiated a bigger supply from the supply authority, the client has agreed with Scottish power to have a larger transformer and feeder cable installed, my part of the works is to upgrade the existing switchgear to accomodate for the new supply...
  6. V

    Laptop power supply isn't outputting enough power

    Hello, everyone! I'm brand new to this forum. I have a question regarding my laptop. Its input power is 240W @ 19.5 V, and about 12.3 A. Its power supply naturally outputs this amount (nominally), and draws from the socket 100-240V @ 3.5 A (50 - 60 Hz). When I was working back in Italy (220...
  7. 1Justin

    EICR. Cu "armoured" 3Ph supply cable. Is this a thing?

    I've come across a DNO installed (SSEN) 3 Ph 3 core PNE supply cable from a private substation to a large Lucy domestic head. Cable 3 Ph is copper "armoured" (or is there a better name for it?). Entirely underground, entirely within a domestic single owner property. No obvious practical or...
  8. K

    Main electrical supply cable asbestos or other outer insulation?

    Hi, Can anyone tell me what material the main supply cable is wrapped with (I believe this cable is owned by the DNO). My concern is whether it is Asbestos? The below photo of the cable taken just below my cut out shows the unpainted section facing the wall to be very fibrous. Also, another...
  9. VsUK..

    Device Power Supply question

    I have 2 external HDD's I use often. Both Power cables are 12V 2A supplies & input 100-240v 50/60Hz 0.80A. However, 1 of the plugs has broken, I stood on it. The other plug powers either of the HDDs. My question is, if I buy a splitter, will the power supply power both HDDs at the same time if...
  10. timhoward

    Mk3 Sleeper Carriage, 120V DC supply?

    I have an interesting job/project coming up - a heritage railway has a Mk3 Sleeper Railway Carriage which they intend to use for volunteer accommodation. It won't be moved from it's final resting place and they need it to 'work again'. It sounds simple.... I've had a good look at it and tried...
  11. J

    Economy 7 to 24hr supply.

    Is it possible to change the supply to Storage Heater sockets from Economy 7 to normal 24hr supply? Have disposed of the old storage heaters and need the supply changed so I can use "normal" heaters. However I do not want to get rid of Economy 7 fully as I have an Immersion Heater and a large...
  12. D

    Unimaginable amount of electrical noise after plugging PC Power Supply

    Hey everyone, lately I've been trying almost everything to reduce the electrical noise over my Be Quiet Straight Power 11 850W 80+ Platinum PSU which exceeds 2000~ mV or 'onlygodknows' how much it goes up, just right after powering up my pc. How could possibly an premium quality such as Be Quiet...
  13. S

    50mm duct & hockey stick - new supply

    Laying ducting and hockey stick as preparation for new 3-phase supply which will be installed after front drive is done. How is the hockey stick joined to the duct? I was told by Polypipe technical that that end of the duct slides into flared end of the hockey stick and forms a tight joint...
  14. C

    Want to use shaver with 3-pin power supply in bathroom shaver socket

    I've just bought a Boots shaver and for some reason it has a 3-pin power supply instead of the usual 2-pin shaver socket cord. The power supply is rated at 100-240V 0.2A input/3W (3V/1A) output. The shaver socket has dual 110v/230v outputs. Subject to the obvious caveat about proximity to...
  15. multimarcus

    Choosing right cable to power Power Supply Units

    Hello everyone, I need to supply power from an A/C wall plug to an enclosure containing 2 power supply units. These are: 1 - Switching Power Supply INPUT 100-240v 3.0A / OUTPUT 5v = 40A --> connected to LED lights 2 - Power Supply Unit INPUT 100-240v 1.5A / OUTPUT 5v = 10A --> connected to...
  16. I

    Power requirement for new supply

    Morning All, I am looking for advice on what KVA I need to advise UKPN so that can quote for new supply to a greenfield site, the requirements are: Cabin/Mobile home Normal House is 9KVa, unless otherwise advised 20 Stables, Office, tack room, hay barn and feed room. stable plot size is...
  17. C

    Static caravan power supply

    I have a holiday caravan which I upgraded to a residential standard lodge. The old static had a 16 Amp supply which was OK as the oven and hob were gas though the supply would still trip if the kettle was on with the microwave but no big deal. The park owner upgraded the cable from the meter and...
  18. J

    Electrical supply to a portacabin

    As trustee of a school I'm helping them with adding a 2nd hand portacabin situated adjacent to an existing one. An electrician has advised the best way to supply the new portacabin, made up of 6 modules, is from the incoming supply to the existing portacabin, to dig a trench and install six 10mm...
  19. Eben90

    Strip Led power supply

    Hi guys I'm planning to make a Led illuminated staircase lights. I have 19 steps and so I will use 19 strip lights of 12W each. So my total power will be 19×12w=228W. I will use power supply 12V 20A SMPS - 240W. I have two conditions : Case1:In auto mode a pir sensor is there and it will...
  20. HappyHippyDad

    When does 3 phase supply become 230V in domestic consumer unit?

    I went along this morning to quote for an EVCP install. I thought it was a domestic house but it was a B@B. It has a 3 phase supply. I always pass on commercial or 3 phase as it is outside of my remit. However, I am toying with the idea of fitting this EVCP IF I can fit it from a single phase...

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