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  1. T

    Power transformer Low voltage supply

    I recently installed a 200kva, 33/0.400 KV transformer for a small commercial hostel, so after powering the transformer, we checked all the output of the 3 phase at the secondary side and it was ok but whenever a single air conditioner is powered , then the voltage becomes low. Please guide me...
  2. O

    Power to a Garage, with RCD at Garage and in the House?

    Hello, I'm no Electrician, but I think I have a understanding of the basics. Few years ago We had our Garage supplied with power by and "electrician". This was done by my Wife's family friend, and he never finished it in my eyes. I've attached a diagram of what's going on...
  3. 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...
  4. 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...
  5. B

    Xmas lights end socket broken

    can you use a 5.5mm 2.1mm 12v DC Connector Plug Power Jack replacement as Xmas lights end socket broken off - the voltage through the adaptor is 31v max 6w ?- but no problems with the adaptor which is a Czjutai Power Supply JT‑EL/FC31V6W. I cannot find a higher voltage replacement power...
  6. James

    Power cuts everywhere

    All this wind seems to be causing quite a headache for the grid. not seen it this bad for a long time, if ever. note, this is only for western power distribution area, I bet the whole country would look like a measles outbreak if there was a map of all areas.
  7. R

    Wallbox EV Charger and Power Meter

    Has anyone installed a Walbox EV Charger with a Power Meter to enable the Power Boost option? It's installed but there doesn't seem to be any way of confirming that the Wallbox is talking to the Power Meter. I spoke to Wallbox and they couldn't help.
  8. V

    Powering multiple led lights with single power source

    Hi, Hope someone could help with below situation or recommend a good forum to ask about or find information on as I read a lot on the forums and watched many videos but it just got very confusing. Objective We acquired 7 sets of led sugar canes, each set has 40 Red leds and is powered by 2 AA...
  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. O

    Subaru Power Seats Issue -Gets power but not working.

    Hi All. I am retrofitting seats into my Subaru Impreza, from a legacy. The new seats are electric and were working fine coming out of the doner car. There was an existing unused wire under my seats so I connected that to the new seats. Its showing that there is 10v getting to the connection...
  11. 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...
  12. L

    No power to any circuit

    Please don't all kill me here but, I replaced 3 lights tested those 3 and all working. Went to do a 4th a restored power and now the rcd trips. Put everything back to how it was and no power to any outgoing circuits but all circuits have 240v. No tripping at all unless I put in a plug top...
  13. G

    Calculating the needed power and compatible driver specifics?

    how to calculate the needed power to light up 6 cool white and 6 white HPL chip like this ? what is the compatible driver specifics to light up 6 cool white and 6 white HPL chip like this ?
  14. L

    Rock saw power feed motor help!

    I have a rock slab saw that needs rewiring. The saw's has a 1.5 hp motor as the power source for turning the blade, and I need to add a small 4 RPM motor to run the power feed with a 2 wire toggle switch to control it. It needs to be wired so the saw's main on/off switch turns on both the saw...
  15. roma08

    UK What cable to use to power a market stall?

    I am setting up a market stall, I'm asked to bring 16 A motor hook up lead. Need for domestic use like lights, charger. Can i use one which has a male end that goes into generator and other end is mains with 3 sockets instead of female end? First time user and not aware of the details. If anyone...
  16. Gunarosid

    3 phase power calculations.

    Dear all.. May be some body can help me to explain what happened with my generator set module. At my attach picture. According to S2 = P2 + Q2 is not correct. Can some body explain it.
  17. D

    Will this power 5 5W LED lights?

    I have a Sensio 12V LED Profile Driver 30W+6W connector. Will this power 5 5W LED lights off of a 230V supply?
  18. happysteve

    RCBO energised despite N-E short... until the power was cycled...

    The bit where I cut to the chase is in bold below if you can't be bothered with the back story. Changing MCB in main house DB for garage supply, so turned off at main switch. Contactum metal DB (about 4 years old), 2x MCBs for existing feeds to sub boards, the rest RCBOs (full height, single...
  19. P

    No power in the loft

    Hi I am about to have a loft aerial fitted in my loft, via BT, as I did not realise that BT requires one for its BT TV service to get normal / freeview channels. The house is only four years old and every room has a tv point fitted and the tv cables all meet in the loft, but are currently not...
  20. 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...
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