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  1. B

    So i am having some dramas as where to start for this practice theory exam question can someome please show me how to work it out :)

    A load consisting of three idnentical coils with a resistance of 11 ohms and inductance of 50 mH are connected in (i) star, and then (ii) delta to a 400v 50Hz 3 phase suply. Determine the total power dissipated in each case
  2. S

    Anyone having experience in selecting a suitable Core ?

    Hello, I want to add a Core in a single coil, in order to increase magnetic field strength. I have posted LTspice simulation of coil's current flow in 1mS. If inductance of coil is 5uH & it allows 1kA current rising per Microsecond, after adding core in coil, Inductance when measured of coil...
    • Sanjay kumar
    • Thread
    • anyone core experience having suitable
    • Replies: 1
    • Forum: UK Electrical Forum
  3. C

    how to work out what size commando plug I need.

    Hello. It has been a long time since circuit designing for me as I am a simple maintenance person. How do I work out commando plug sizing, for example a machine rated at 32A, plus I have several machine that need moving onto one board, I have there rated current how do I work out board size...
    • chris1983
    • Thread
    • circuit commando design electrical work having how to out plug since size sizing work
    • Replies: 6
    • Forum: Electrical Engineering Chat
  4. T

    Hi all

    Hi all, thanks for letting me join your forum
  5. E

    UK Can I swap halogen downlighter GU10 bulbs with 4w LED ones?

    I have 12 x 40w halogen downlighters in our kitchen ceiling which I want to replace with 4w LED equivalent. Can they be a straight swap? Will there be an issue with the transformer/voltage? The light switch is standard type. If I wanted to upgrade the switch to a dimmer type (and the new LED...
    • Eszaq1
    • Thread
    • bulbs equivalent gu10 halogen having led swap transformer without
    • Replies: 11
    • Forum: UK Electrical Forum
  6. G

    Hi I’m new here. I’m a non prof DIY er. Having problems with fitting Trendiswitch two way light switch

    Hi I’m new here. I’m a non prof DIY er. Having problems with fitting Trendiswitch two way light switch Source URL: The Welcome Forum - https://www.electriciansforums.net/forums/the-welcome-forum.19/
    • Gab123
    • Thread
    • diy fitting having light light switch new problems switch two way
    • Replies: 16
    • Forum: The Welcome Forum
  7. L

    Having issues with this wiring set up that is in an older house.

    I have a 2 gang box in my dining room one of them is part of a three way switch to the main light. I also have three recessed lights in that room that I was trying to run to the other switch. With all of that going on I realized the switch also had more wires all tied in together. I removed a...
    • Leenelson19
    • Thread
    • having house issues older screwfix wiring
    • Replies: 1
    • Forum: UK Electrical Forum
  8. Vortigern

    Is anyone else having problems accessing certain areas of the forums?

    Just wondering is it just me or a general problem I encounter. First, I cannot comment on the DIY forum as I have insufficient priveleges. I have raised this a few times with forum admin but nothing has come of it. Secondly today I tried clicking on a thread to the plumbers forum and was told...
  9. K

    Issue with having all LED spotlights in bathroom, 2 must remain Halogen

    Hi, I have 6 spotlights in my bathroom, when I moved into the house 4 years ago I replaced all 6 with LEDs but they wouldn't work, turns out I could only get the lights to stay on if 2 Halogen bulbs remained (1 on each end of the bathroom). Recently one of the 2 Halogen bulbs has died and now...
    • kevin2222
    • Thread
    • bathroom bulbs halogen having issue led led bulbs spotlights
    • Replies: 9
    • Forum: Lighting Forum
  10. G

    nic log on

    anyone else having trouble logging into nic. just getting a holding page
    • gutterball
    • Thread
    • anyone getting having trouble
    • Replies: 3
    • Forum: UK Electrical Forum
  11. Gavin John Hyde

    Having a clear out of bits and bobs

    Having a clear out of stuff still. Got a brand new unused unopened Armeg Accelr8 Hole saw (20mm). Have the full set and a few spares os getting rid of this one.. They are around £29.00 for 2 in the shops so if anybody wants one I will post it to you for the good price of £12.50 Also got the...
  12. Pete999

    My Sister in Law is having her kitchen extractor remodeled, what certi ss required

    My Sister in Law is having a new extract fan installed due to an obnoxious Neighbour complaining about cooking smells, She is having a builder to install a new fan and ducting, What Electrical certification would be required? me I would say a MNEW cert and an ISITEE as well what say you lot? I...
  13. Gavin John Hyde

    I'm having a clear out of surplus bits

    As the title says I am having a clear out... Have as follows Kewtech KT115 multimeter £25 I will post it for free. Barely used and In Very good condition. Also got a kewtech FC2000 checkbox, about 18 months old in excellent condition £75 with free signed for postage. (pictures to follow) good...
  14. D

    Hi and thanks for having me. Can I wire an Au plug to this fan?

    Kinda was hoodwinked on Ebay. Pic had black wire, taped and end hidden. No mention of no plug. I guess you get what you pay for. Liv'n'learn. Anyway, I can return it, but was wondering if I can simply wire it to a plug and use it. Tried Google but no mention of Fans with 2 red wires. Apreciate...
  15. J

    I'm considering having 3 phase installed

    Hi I currently have a 100A single phase supply ( forgive the pun ) & I am considering asking for 3 phases to be installed. I have some workshop equipment that I want to install which are 3 phase and total about 30kW. My property is fed by 2 cables overground on 7 telegraph type poles. My...
  16. J

    Would having upstairs/downstairs rings on same rcd speed up powerline adaptors

    Hi i'm trying to get the best speed i can from powerline adaptors scattered around the house. between the downstairs ones the speed is 784mbps, however to the upstairs ones only get 40mbps. i've eliminated all the interference i can around the house that was affecting the speed. if the upstairs...
    • john999
    • Thread
    • adaptors having powerline rcd rings speed
    • Replies: 4
    • Forum: UK Electrical Forum
  17. H

    atlas copco air comp

    hi guys hope all of you having a good time my air compressor atlas copco GA11 FF is not running due to a fault a red light is in screen i try to reset many time but not gone thanks for help
  18. S

    Trying to source an item not having much luck

    Hi all I am desperately trying to source several of these Legrand RCD twin socket outlets for office 3 compartment floorboxes but not having much luck. Could anyone very kindly point me in the right direction? :) Many thanks
  19. R

    Chances of constant current LED's having been fried!?

    Picked up a job where the previous electricians had not connected some collingwood LED stair lights (they were exited from the job!), they had been wired in parallel and no doubt hooked up to an LED driver, anyone up on their electronics? Have they definitely been fried or is it worth taking a...
    • rolyberkin
    • Thread
    • constant current fried having led's
    • Replies: 3
    • Forum: UK Electrical Forum
  20. S

    Hi all having problems with this heating system will hw stick on because of power on terminal?

    • STEPHEN MCLAUGHLIN
    • Thread
    • because domestic having heating power problems stick system terminal
    • Replies: 14
    • Forum: Central Heating Systems

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