amps

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  1. S

    Question about diversity calcs

    hi all, Looking for some advice on the main fuse for a property I’m developing. It’s going to have 6/7 studio rooms, all with microwaves and potentially a hob. Set over 3 floors if I were to have a separate light circuit for each of the 7 rooms at 3amps per room, that’s 21amps at full...
  2. N

    Led driver Amps question

    hello im beginer, learner actualy! i have got 150 w (24 v) led driver to feed up 10m led strip (10 w/m) my question is ; how many amps will flow in the conductor after the driver? i know this formula : 150/24=6.25 amp will flow between led strip and driver!BUT wil it same amps after the led...
  3. S

    Total amps potential

    hi all, Quick question I hope you can help me with, it’s to do with VIR triangle, and in this case how many amps pass through the circuit.. so.. If a human touches a circuit with 100,000 ohms resistance of the skin, and the voltage is 240 volts, does this mean the individual gets hit with...
  4. S

    Battery amps and starting

    I have a 100ah battery 900cca I want to install an airflow fan in my vw t4 in the rear for my dog, fan is 12v dc, 10 watts, 0.8amps, How long can I run it with engine off before van won't start?
  5. T

    30 Amps DP mains supply concern

    Note: I am not an electrician. I have a large house that has been divided into 4 flats with an additional landlord supply, so 5 meters in total (2 smart meters, 3 dump meters). I recently noticed that there was damage to one of the supply side fuses. I called UK Power Networks who came and...
  6. S

    Amps carried through air

    Hi everyone, Watched a programme recently on TV, a young man was on top of a train (not advised) and the power lines above him carried 10,000 volts. He got too close and it jumped through the air and got him. Thankfully he lived and made a decent recovery. My question being, is it even...
  7. K

    Multimeter showing reading when nothing is plugged in

    I want to talk about the context to this first, I'm in my first year at college studying level 2 electrical installation and for Christmas my family got me a toolkit which had some tools , multimeter and a soldering iron. They didn't really know much about things like that and they wanted it to...
  8. phxl

    Single Module Double Pole RCBO over 40 amps?

    With for example the Wylex NXHL1B Single Module DP range of RCBO's there is (at last) a sensible solution to RCD protection for all circuits individually, but only up to 40 amps. Is there a manufacturer doing 50 amp single module double pole rcbo's e.g for thirsty 10 kw or 11 kw large cookers...
  9. D

    Switching high loads so as not to go over 80 amps.

    I'm just wondering if anyone knows of a product that can switch between 8kw loads? The customer I have (a Deli) wants to add a 8kw pizza oven but only has a single phase supply and is already at capacity at 80 amps. He has a industrial size oven and chicken rotisserie which totals around 8kw...
  10. Marshall Kidd

    Splitting 3-phase circuits for 3 high draw theater fixtures.

    Hello. I'm new here so my apologies if this post ended up in the wrong forum. I have a basic understanding of phases and voltage and the lot. Today I'm trying to wrap my head around how I might be able to split one 3-phase 240v 50a source to accommodate 3 high draw theater fixtures. Here's...
  11. Simon-0116

    3ph star delta starter motor drawing high amps

    Star delta starter / motor problem. Starter starts runs as should on bench with no motor connected. Getting 230v to e on all 6 uvw 1s and uvw2. 415 u1 to v2 etc etc. But nothing 1 to 2s. As expected. When motor connected up. (Single speed) it takes 3a in start on all . Drops into run fine but...
  12. Richard Cook

    Wago connectors and amp ratings

    Hi folks, I'm not an electrician and don't intend to do anything above and beyond the standard DIY changing of sockets/lights etc but I have a question that I'm interested in learning more about. I recently came across the Wago connectors (which look to be a lot easier to use than the standard...
  13. Wickcar

    Long cable to electric car - amps and gauge advice

    Hello all. Advice appreciated on running a 22m to 25m single gang extension cable from a domestic socket indoors, to an outdoor electric vehicle's own official 5m charging cable (which ends in a three pin plug). Nothing noteworthy about the wiring in the house whilst the charging circuit...
  14. D

    Max amps from UK socket

    I have been told I can use a 30Amp welder from a normal UK socket. But I have seen numerous posts that say 13amp is max from single socket and 20AMP is max from double socket: I must be missing a trick. Some internet postings below. "Double sockets are rated for 20A draw, over this long term...
  15. Gazthesparky

    Bit of clarity PFC Amps or KA

    Having a moment lol please can someone clear this up for me. my merger MFT 1730 displays the PFC as 955 A Filling in a cert and it has the KA symbol by the box should I be recording the 955 in Amps or should i convert it to 0.995 KA Cheers
  16. M

    Newbie queation, low amps ?

    Newbie question time but i need to know, Juat had 10 x 295w panels fitted and all seems well but i dont get how our system only produces 13amps max when its showing 3000watts on a good day. The panelz are 9amp each so why does the inverter show 350volts but only 11 or 12 amp max on ac or dc ?
  17. D

    Impact Drivers

    Hello I'm an apprentice sparks I was wondering on a makita impact Driver, it says 5Amps 18v on the battery, if the wires in the body of the drill were exposed and someone who was using the drill touched the wires what would happen ? I was told at College around half an amp will kill you so I...
  18. Pete999

    Pete's Videos How to convert kw to amps in 3 phase system

  19. G

    KVA to amps help

    Have got a new supply going in and have been told its 300KVA 3 phase now if i have worked it out correct is comes in a 433 amps which going by the size of the places i would expect to be per phase. Which i take it would be fused down to 400 amps by the DNO
  20. S

    Amps

    Hi everyone, I was called out to a house yesterday to fit a new 2 gang dimmer switch. When got there the customer had installed on 1 circuit throughout the whole down stairs, over 100 x 50w / 230v down lighters onto a 6 amp circuit. Quick clac suggests this as being over 5000w/ 230 = 22Amps...

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