supply

  1. A

    12v power supply for diesel heater

    Hi, I am in the process of setting up a diesel heater to warm our conservatory and need to provide 12v power to it. I have purchased a CCTV distribution box which essentially has a 30amp convertor wired to distribution board. My plan is to remove the distribution board and wire the power...
  2. tetoncraftworks

    running LED christmas lights with a power supply instead of batteries

    i have an old motorola ac power supply and i want to convert my battery powered led christmas lights to an outlet. The power supply says Input 120v Output 4.0 vdc 350mA Will this work? The batteries box uses three 1.5 double AA's. Thanks
  3. R

    laptop power supply cables - fuses and ratings

    Hi there. I have noticed that most laptop power supply cables have a 5A fuse in the plug, but a 2.5A rating on the clover leaf end of the cable. Is this safe? Surely there should be a 3A fuse in the plug at least, given the cable is rated for 2.5A. The whole industry seems to be happy to...
  4. P

    Homeowner - Power supply cable relocation

    Hello. Just a lowly homeowner here who is beginning to panic after a major house renovation regarding relocation of the main supply cable to the electrical box. Just to make a point straight off, no work to move the main supply cable has been made, but the electrical box has been taken off the...
  5. D

    Vehicle to load - supply a house

    Hi guys I was recently ask by a customer if/how his house could be supplied by his electric car. He wants to charge the car at night on low rate and use the car to power the house during the day. The car has a Vehicle to Load facility and can supply mains voltage a.c. To power any ac device, he...
  6. cliffed

    ATS for generator to supply warehouse

    ATS For generator to supply warehouse when Mains Failure, a PFC Panel is in place on the Main Supply. Will this need to be Off when generator is operating.
  7. sythai

    BT Fibre..... incoming supply

    Hi Guys Just first fixing fixing a new build and master BT point needs to be in the basement plant room/ next to rack. BT incomer is overhead line, coming into property on far first floor corner. Opposite corner to property from basement - basically a long way away! Other ones we've done with...
  8. S

    Correct way of routing SWA supply for flats ?

    Hi Fellow electricians, I’m recently qualified and I would like clarification on swa supplies for flats, my boss says this is okay but I’m not sure. So my question is if my supply is downstairs can I run my SWA through joists under floor boards and stud wall cavities without rcd protection. it...
  9. J

    Double pole or Single pole + Neutral for domestic extension supply?

    I've been carrying out quite a few domestic extension first fixes recently which involves providing a power supply installed from the properties mains. I have always just Henley blocked from the properties main consumer unit tails into a 63/80/100A BS-88 fuse Main switch board then from the...
  10. kreatiff63

    Lights - Why is the my supply switch controlling my new one?

    I've taken the supply from a neighbouring light [power source = outdoor lights] and this now controls the old and new switch as follows: When I turn on the new lights the outdoor lights come on with a low glow When the new lights are turned on and I turn on the outdoor lights, this turns the...
  11. jammersp

    Transformer/power supply required - difficulty in finding

    Hi all, its been a fruitless task task thus far. I'm trying to find a transformer with a perculiar output pin config for 24V and 0.1A, please see picture. The ref on the 'plug' is cp39b0240v0100b. Any help welcomed? thanks JP
  12. V

    How to supply a garage with 32 Amps for a car charger and another 32 Amps for sockets?

    Currently, I have a side garage port (with a garage door, but open on the garden side) supplied by a 2.5mm2 radial circuit. The plan is to convert the port to a proper garage next year. As the bedrooms are currently under refurbishment and the floorboards easily accessible, I would like to make...
  13. C

    UK Generator connection to mains supply questions

    I want to use a manual change over switch to safely connect a 21kVA single phase tractor PTO powered generator to my mains supply in case of power outages. The cable run from the generator to the outside mains incoming box will be about 40 meters. I intend to use 16mm SWA for that run. The...
  14. Joules

    My electrician wants to remove the inverter's supply PE and...

    ...Replace it with a connection to a ground spike via the heat sink. The 1.5kW GTI has no off grid capability. This separates the house PE from the inverters but is it the right thing to do? New to the forum, this is my first post.
  15. D

    High Ze on tns supply

    High Ze on a tns supply. It’s 1.48 ohms. Weird as I did a Ze here 4 weeks ago and it was 0.50. Do DNO come out for a Ze that high what is likely to happen when I call them? Thinking of going home to double check tester is working ok at home before I call them. Thanks
  16. E

    Stop Dc back feeding into Ac supply

    How can I and where should I install in circuit a diode? Diodes? Or any other device that could stop DC short to chassis on my RV from back feeding when i plug my 120 volt 20 amp system into RV which is causing havoc in damage to the A/C gfci breakers frying them constantly ? Also this will...
  17. C

    Solar Panels Barn Earthing for Solar, 80 Meters from Cut Out

    I’m installing 20KW of Solar on my Barn roof, The barn is fed from a 3 phase supply originating at the house which is 80 meters away. I’ll be installing some 35mm 4 core to minimise the losses to <1% volt drop between the barn and the point of supply located at the house. The Earthing at the...
  18. B

    Caravan supply help..

    Youngest daughter has decided to return to the nest after several years of living in the big city, now that she is permitted to work from home most of the time. She's bought herself a mobile home as an office, and wants to set it up at the far end of one of our gardens/orchard. I have to connect...
  19. D

    Kewtech k71 supply lead

    I recently moved and have lost the supply lead it's 5 years old.has anyone got one or know which way round the n coc and neutral are so could make my own one Dave wire electrical ipswich 33 years an electrician
  20. D

    UK Supply to 2 outbuildings

    Hi. I have a shed with its own small consumer unit connected by underground SWA to a connection box on the outside wall of the house. This in turn is wired to ts own MCB in the consumer unit of the house. I am going to erect another outbuilding some distance away from the shed. SWA for this...

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