amps | Page 5

amps

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  1. J

    kva to amps

    Hi can anyone tell me how many amps is equal to 25 kva on a 3 supply??
  2. HappyHippyDad

    Understanding Volts and Amps!!

    I'd like to understand a bit more about what actually gives you an electric shock. I think the more you understand something the safer you will be. I have been taught that it is the current (amps) that gives you the shock, but this then confuses me with regard 12v equipment (lets say anything...
  3. I

    Amps to Amps!

    Hi - I've spent the last 10 year sorting out cabling for AV solutions; Home Cinemas, Multimedia, HiFi etc. Then I saw the "light" and decided to properly understand how it all really works and after many hours of study and some testing exams got my 17th, Part P & Testing + Inspection...
  4. D

    Amps per phase calculation

    Could somebody please help me check my calculation for amps per phase for a 50KW total load over 3 phases and tell me what it should be. Thanks in advance.
  5. M

    25VDC @ 14,000 Amps?

    Getting involved with electrolyser systems. Korean manufacture. They cannot seem to clearly tell me if the 25VDC @ 14,000 Amps they use in the system will or will not injure or kill? Any thoughts welcome. Regards, Mal
  6. S

    Socket extension question - max amps

    This has no doubt been asked often by non electrical minded folk like me but when a socket extension says maximum 13amps, does actually that mean 4 plugs fitted with 3amp fuses like desk lamps etc (or 5a+5a+3a) or does it go by the actual amps of the equipment and you could have say 6 plugs with...
  7. S

    Will a 10mm PYRO take 80 amps ?

    Hi, I need to change the main incoming fuse from 60A to 80A but there is a 10mm pyro feeding the property and i dont really want to replace this. The reason I need to up the supply to 80A as I am installing a sunbed which runs at 40A single phase. The load will never constantly be running at...
  8. S

    no amps on a new system

    hi i have just done a 4kw system it is with sanyo panels and a power 1 inverter 2 strings of 8 and its on a south faceing roof but it is only doing 9 units a day i have 330 volts on each string but very little amps i have had a look at every connection and all looks good i have looked at reverse...
  9. Y

    Lost Amps

    Basically the circuit is of of an air heater battery consisting of : 3 x 2Kw heaters wired in star to a 3Ph & N supply , plus a capacitor start 1 Ph motor on L1 phase . Total amps of heater = 8.5 amps / phase , motor draws 6.5 amps on L1 phase when run separately . But when both are run together...
  10. A

    Car 12v amps -- help!

    Hi there, Sorry, I'm not a sparky and hoping that someone can help me with a question! I have a wireless cctv camera and reciever, they are both 12v, one is 200mA the other 500mA, if I wire this directly to a car battery (I assume a high ampage) will it 'blow them up'.... or is it that what...
  11. T

    Amps and milliamps

    I was just pondering.....if a consumer unit has say a 32mA mcb protected circuit, upon which I use an appliance with a 15 Amp fuse in it's plug........ wouldn't the mcb always blow before the 15 amp fuse in the plug ????? 15 AMPS seems to be so much tougher than 32 mAmps. Or don't I understand...
  12. G

    how many amps?

    I know this is a really daft question, so please dont shout at me but I cant work it out. I have 5 x 50 watt 12 volt bulbs powered by a 230 volt to 12 volt transformer. Could someone kindly tell me how many amps they use??? :confused: Thanks
  13. ringer

    Sealey EH3300 drawing 30 Amps!

    Customer has bought a Sealey EH3300 heater. He tried putting it on a plugtop and it didn't work, so he has asked me to connect it. It is, as the name suggests, a 3.3kW heater. No problem, thought I, it can be installed on a fused spur to an existing radial circuit containing just three...
  14. P

    What size ground cable do I need for 40 amps?

    I will have to replace a ground cable from my circuit breaker box to my buildings earth line. The devices it is grounding have a max load of 8750kw / 220v = 39,7 Amp. It's going to run along a 6 SQ MM cable but I don't know what size the ground cable should be for this. I read 1.5 SQ MM is...
  15. jibjob

    Bonding TV ariels & amps

    Hi all, I've been asked by a TV ariel installation company to quote for bonding a soon to be installed TV ariel and amplifier. The service will be shared by a number of flats in the same buliding. Can't find anything in the BRB regarding the regs on this. Can anyone help/enlighten?:)
  16. W

    amps volts and whats?

    Hi everyone, having read a few forums recently this looks like the one offering the best advice.Clearly a lot of us are here because we have a problem we cant figure out and need some help and i am no exception. Some months ago i fitted a system to my camper in the uk and then took a 28 day...
  17. D

    Fuse 40 with appliance 13 amps

    Hi there, in the fuse box I hava fuse for 40 amps and an "heavy" wire going to the cooker. However my cooker is 13 amps! Normally I would have changed the 40 amps fuse from the box but the plug of the cooker is fused, with a 13 amps fuse. So I guess that is enough to prevent the cooker from...
  18. C

    back to basics higher the volts lower the amps?

    hi guys am i right in saying that generally the higher the amps the lower the volts ?? watts divided by amps = volts watts divided by volts = amps amps x volts = watts taking that in mind a 12v extra low voltage spot light which is 50 watts = 4.1 amps 240v low voltage 100w bulb = 0.4...
  19. N

    Watts to Amps

    For single phase its easy Amps = Watts/Volts. Is it as easy for 3 phase? Amps = Watts/Volts/3 per phase. or is there a root 2 in their somewhere? I need to know to calc the voltage drop along the supply. Thanks in advance for any offers.
  20. F

    Not enough amps maybe????and Rcd tripping

    Morning sparkies:) Was on a job when his neighbour asked if i could have a quick look at his place, as his power trips of all the time? And his bills have gone up dramatically. Has a home energy meter that tells him he's using power even with every thing off??? 5 bed 15 years old no paperwork...

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