current

  1. B

    Defining what equipment has protective conductor current

    Hi all, I have an engineer who has failed a wall mounted data cabinet because the PDU is hard wired into a switched fused spur, the spur is spurred off a ring main in 2.5/1.5 twin and earth. He has failed it under regulation: 543.7.203 The wiring of every final circuit and distribution...
  2. R

    Measuring current draw by AC motor.

    Hello guys. This isn't a job, just so that you know. Just exploring. I have a couple of AC motors and I am playing with them. One of the things I want to do is measure the current draw. So I attach them to a power source and switch it on and off they go doing their thing. No problem there...
  3. A

    Jumping current on outdoor 12v lighting circuit

    Hello, I have two almost identical circuits of outdoor 12v lighting setup in my garden, each running off a separate 20W 240v-12v transformers (12v Waterproof Transformer (Various Wattages) | 240v - 12v | 10W - 150W -...
  4. J

    Printer in-rush current

    I recently tested 10 laser printers, all the same model of a well-known brand. I always do a load test and two of the 10 exceeded the wattage shown on the specification plate as they started up. I didn't fail them as I could see no sign of any problem such as overheating and they were both in...
  5. A

    Residual Current on Mains Tails - Installation Disconnected.

    I bought a new MFT1710 a couple of weeks ago and got a free clamp meter with it. (UNI-T UT210B, 200A Mini Clamp Meter). I finally got it out the box today and thought I'd try it on my mains tails to see if/how it's working. Surprisingly, with the consumer unit main-switch off, and the main...
  6. Loki

    Inrush current for pool lighting - pool cafe hotel project

    Hi, Just a quick question regarding inrush current for my pool lights circuit in my pool/cafe hotel project? I was looking at 5 of these: Pool LED - https://www.apollolighting.co.uk/products/pool_led/ 125W per light (5x 125 = 625W / 230 = 2.72A) Issue is that the inrush current per light is...
  7. Andrew Beveridge

    E7 with 2 meters (on/off peak), but current only goes through one?

    Hi folks, We moved into a new flat about 6 months ago and have realised we're being billed for all of our electricity at the expensive "all day" rate - despite having a very large "Thermaflow" electric boiler which is designed to draw tons of power heating up water overnight to use throughout...
  8. HappyHippyDad

    Advice regarding inrush current please?

    I have just fitted 5 x 200w LED floodlights on the same switch. I fitted 3 yesterday all worked fine. However the owner said they tripped once after I had left, no further info as to if they tripped immediately or after a while. I have just fitted the last 2, the MCB is tripping immediately...
  9. Daniel Shepherd

    Two fused spurs from one current socket?

    Hi, I'm doing some work on a room I want to convert into an office space. It currently has three sockets in it. One has two neutral and two live wires connected to the socket, the other two have 3 live an neutral wires (this wiring is done circa mid 60's we think. I plan to add about 2000kw...
  10. B

    HELP CONSTANT CURRENT DRIVER ON LEDS

    Hi Diginet, I am wondering If someone can help me with the DGLC650C18PD driver. Sapphire Diginet 18W 650mA Phase Control LED Driver - https://www.diginet.net.au/portfolio/sapphire-diginet-18w-650ma-phase-control-led-driver/ We have a project here where we are installing the following: - 168...
  11. S

    Learn AC current and voltage by every electric machine or electronic circuit you know

    I want to learn how AC works and I have no idea what I should use as an AC source since I never used one.I only know of inverters but that's not really helping me in understanding RLC circuits....Are AC sources real?Are they batteries?I'm new in this and I can't think of a device or something...
    • sonny
    • Thread
    • circuit current electric electronic every knowledge learn machine voltage
    • Replies: 17
    • Forum: Electrician Talk Forum
  12. D

    Intro and question about my current electricians advice on Underfloor heating

    Hi all, I have had an electrician round doing some rewiring. Whilst most seems good i have had a few problems with him crossing lives and neutrals, connections coming apart and a broken pump (blew whilst he is working here says it was nothing to do with him though). I am trying to persevere...
    • David Hughes
    • Thread
    • advice current electricians heating intro question underfloor underfloor heating
    • Replies: 8
    • Forum: The Welcome Forum
  13. R

    And another mad question ("minimum current")

    28. Which one of the following is not considered when calculating the minimum current carrying capacity of live conductors of a cable? a Ambient temperature. b Grouping. c Type of protective device. d The maximum permitted volt drop.
  14. D

    Dealing with Inrush current from ded driver

    Hi, Newbie here so please bear with me if I haven't provided all the details. I am not an electrician but my dad was and my cousin are so I know a few things. My dad has retired now but my cousin is qualified and will do the work for me when he eventually comes round. I need to have everything...
  15. HVManiac

    How much current is drawn by an 18,600 BTU A/C compressor while running at atmospheric pressure

    Hi folks, I recently got a 26 year old hermetic A/C compressor. I plan to use this as a vacuum pump mostly for some of my hobby projects after adding an air filter and a moisture removal setup to it. The specs on the label on the A/C said that it power draw is 2450 Watts, 11.5Amps. Does it...
  16. w0z

    TN-CS main bonding cable typical leakage current question.

    OK I'm prepared for the usual onslaught so here goes... I recently bought a clamp meter Uni-T UT210E. The first thing I did was check it out against my trusted AVOs and also a couple of other cheapo DMM's, (measure current through wire through probes and compare to clamp reading). The clamp is...
    • w0z
    • Thread
    • bonding cable current leakage main question tn-cs
    • Replies: 8
    • Forum: UK Electrical Forum
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