power

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  1. E

    How to understand power ratings and interaction with fuses

    Hi there I have a few questions related to the power ratings of certain devices and how this interplays with the fuse. The reason I am asking this is whether I can safely add new plug sockets off an existing 3A fused spur (I plan to only use these plug sockets for low power devices). The...
    • Ellsa100
    • Thread
    • fuses how to power ratings understand
    • Replies: 4
    • Forum: UK Electrical Forum
  2. A

    Dynamic power control for HW cylinder heating

    I would like to know if it is possible to dynamically control the available current to Hot Water cylinder that has 3 x 4.8Kw immersion heater elements. The house supply is single phase 63A supply. When something like a jug or oven is turned on, then I wish to the HW cylinder load to be...
  3. I

    Shore power plug fitting

    I know this is a long shot but I am trying to find a simple electrical component that does not seem to be available. Wondering if anyone here has seen one and could post a link to it. I am looking for a recessed flanged covered male 15 amp shore power receptacle that I could mount through the...
  4. S

    No power through ceiling rose

    Hello all, I'm replacing a 3-bulb spotlight with a standard BG ceiling rose but upon connecting, the light won't turn on; the problem is, I can't see why. We can handle the wiring shortly, but after a day or two of testing - wiring the spot back on, test (it works), replacing with the ceiling...
  5. D

    Power Jack 12 volt LF inverter

    I bought Power Jack 12 volt LF inverter few years back, Can I modify this inverter to 24 V or better 48 V inverter? Possible???
    • Daythunder
    • Thread
    • 12 volt inverter jack power solar panel volt
    • Replies: 7
    • Forum: UK Electrical Forum
  6. 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...
    • ASD289
    • Thread
    • 12v diesel heater power power supply supply
    • Replies: 9
    • Forum: DIY Electrical Advice
  7. T

    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
    • tetoncraftworks
    • Thread
    • batteries christmas christmas lights instead led lights power power supply running supply
    • Replies: 23
    • Forum: DIY Electrical Advice
  8. 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...
    • reverendo
    • Thread
    • cables fuses laptop power power supply ratings supply
    • Replies: 9
    • Forum: DIY Electrical Advice
  9. 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...
    • proy900
    • Thread
    • cable power power supply relocation supply
    • Replies: 3
    • Forum: UK Electrical Forum
  10. B

    help on cable calcs power

    not to sure on how to find the wats for the power cable calcs could anyone help me its for a ring with 3 Dubble sockets on DB05-3L2 cable size: 2.5mm temperature rating:90°c total demand 32a 29.125m Design current w/230 lb= 0.547A Ambient factors 1 cable Ca=0.91 Cg=1.0 It=design...
  11. C

    UK Limiting power from sockets

    Hi I have an Airbnb and some guests are charging their cars off of power sockets in my kitchen. So not only is this outwith my insurance coverage it is costing me a lot of money. Are there sockets which can either 1) limit current? Or 2) time out automatically after 30 minutes or so I can...
  12. L

    Why is there no power to my Dyno-Glo Garage Heater?

    Hi, I have a new Dyno-Glo Garage Heater that I connected to the breaker, and it won't turn on. Multimeter reads 120V going at each node in the heater. Breaker is a double-pole 30 Amp Stab-Lok, rated for 240V. I'm not sure how to troubleshoot further, and I'm hoping for some direction, please.
    • Long Con
    • Thread
    • garage heater no power power power to
    • Replies: 4
    • Forum: DIY Electrical Advice
  13. D

    Power calculations help please?

    Hi All, First of all apologies for the potentially novice sounding question believe it or not I’ve been a qualified electrician for 10 years but I’ve always worked cards in so calculations have not been something I’ve ever considered I just install the sizes on the spec however I now have to...
  14. D

    Home power intermittently tripping

    Recently my RCCB keeps keeps tripping intermittently. It can happen between several hours to few days when a trip will occur. During the trips, no additional appliances were switched on or being used. There are times when it simply trips in middle of night when most appliances are not running...
  15. A

    power fed light switch Hager rcbo won’t trip

    Power fed light switch and all lights test great, as soon as we put the dimmer switches in the Hager rcbo won’t trip, any ideas please
  16. I

    Suggestions for outdoor power for 12V garden lights

    I currently have some 12v outdoor lights which have a plug with a built in transformer. I would like these to turn on and off without having to go outside so ideally would like to have them on a timer but not sure of the best way to incorporate this while keeping it looking presentable...
  17. R

    Battery E bike Battery to power bank ?

    Anyone got any advice on how to convert a 37 v Li-Ion e bike battery into a 12 v power bank ? I will need off the shelf parts.
  18. M

    Socket suddenly stopped working.. no power??

    Hello gents, I am trying to fault find the issue behind an old kitchen socket which suddenly stopped working. I immediately assumed moisture could have been a factor so I bought a new face plate but once I opened it I discovered there is no power to the socket from the incoming cable. The...
    • mattantho93
    • Thread
    • no power power socket working
    • Replies: 6
    • Forum: UK Electrical Forum
  19. D

    Advice on using lighting circuit to power cctv (12v/3A)

    Hi All, so I have a outdoor cctv camera that you plug in - I'm thinking of attaching this to the soffit and going into the loft from there (very easy access). Can I just wire this into the lighting circuit, I've already done some work in the loft for various lights and an extractor fan so I...
    • danz1man
    • Thread
    • advice cctv circuit lighting lighting circuit power using
    • Replies: 4
    • Forum: Lighting Forum
  20. R

    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)...
    • Rededdie
    • Thread
    • branch changes circuits panel power screwfix voltage
    • Replies: 1
    • Forum: UK Electrical Forum

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