current

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  1. spud1

    Can I measure the level DC 'leakage' current piggy backing on an AC supply?

    Hi ! Much talk of the use of type A, type B and Type F RCDs recently. As we know all are specified at varying levels to ignore the blinding effects of transient DC currents, that are being superimposed on our AC circuits by modern technology. But is there a means to measure the level of this...
  2. C

    Hot tub has uncomfortable current only from outside and grounded.

    I am a very knowledgeable DIYer with no issues on any beginner to intermediate wiring because my father is a retired electrician. The issue: I have a safety issue I am concerned it might be an expensive discovery mission if I hire an electrician early on so trying to narrow down to am easy fix...
  3. P

    UK what size fuse should I use in a DC syatem?

    Hello if I have an appliance with a max current draw of 5.55A and an short circuit current of 6.11amps what size fuse should I use in a DC syatem?
    • pt12345
    • Thread
    • appliance circuit current fuse hello max short short circuit size
    • Replies: 3
    • Forum: UK Electrical Forum
  4. ETradesmen

    Very odd current through earthing.

    Good evening all! I was on site today relocating a consumer unit in a domestic property and got a hefty whack of a CPC... I have never seen this much leakage in 20 years of work. It is a TNS system, the main switch was off (I got a whack of a gas bond). I am unsure what to do with the...
  5. R

    Bringing commercial lighting systems up to current standard

    Hi, I'm new here and this is my first post, so excuse any forthcoming rookie errors. I am from the UK with an electrical engineering background, coming from the heavy industry sector (mainly power stations). I recently took on the role of estimator/operations manager for a small electrical...
    • rulesandregs
    • Thread
    • ausie elec commercial current lighting standard systems
    • Replies: 4
    • Forum: Australia
  6. J

    Trips the current.

    I have two 1200w Mini Cookers which trips the current. If I use a 2500w kettle, it is OK. If I use a 2000w fan heater it is OK. I cannot see any faults with the cookers and cannot get my head round what is happening. Any help appreciated?
  7. UKMeterman

    Ukrainian prospective fault current meter

    Fault current measurement, Ukranian style
  8. Connor Mennell

    Current being drawn on devices connected to power supply

    Hi all, Just wondered if there was any devices that plugged in line with the plug socket and plug which you can use to measure current being drawn on different devices being connected to a power supply? Just wondered if there was a better way then just using a multimeter. Cheers, Connor
  9. E

    Limit current drawn from generator

    I have a 1kw peak output generator. 900w continuous. My boat has an immersion heating element that draws 1kw. This will make my generator cut out. I know that if the heating element could only be fed 900w it would still work but just take that little longer to heat the water. So my question is...
  10. H

    current leakage to earthing line

    can some one help me with this problem? I have one spike guard which has only neutral and line wires. but the sockets on the spike guard are 3 pin, the problem I am facing is that : I am getting current into my earthing line, I have got shocked many times from chargers, fridge surfaces, etc. I...
  11. C

    Current electrical regulations help please.

    Looking for advice. Can you advise the current situation with having minor work carried out., as to regard of certification., 1. Installation of new shaver point in bathroom. no previous point in bathroom. 2. installation of spot lights in bathroom ceiling to replace pull cord. ( switch...
  12. newfutile

    Prospective fault current

    During a recent inspection on a 3 phase board I have some MCBs rated at 6KA And some rated at 10 KA . The ZE is about 0.04 to 0.05 depending on phase , form my calculations this works out to 9.95 KA ( I can only measure single phase pfc) On a consumer unit we allow 16KA if its backed up by a...
  13. J

    Testing and Inspection Over Current Protection

    Hi. Silly Question, as a tester / inspector of an installation. How do i confirm that overload protection is satisfied for an existing circuit, or is it just assumed as long as Coordination (p89 18th Regs) is satisfied and the protective devices is of a EN BS device? Practically, how do i...
  14. B

    Sub main 125m in16mm with 80A 1361 over current device

    Just been to a new build with a 125m sub main as per tittle, owner says the sparky workout the cable size, I wonder how!
  15. K

    Current reading on ground electrode conductor in main panel

    I live in the Philippines but I have the same US electrical system (2 x 110V hot + 1 x neutral). I have two ground rods buried 8 ft. deep and connected to the main panel. Netural and ground are bonded in the main panel. And from the main panel, all 4 wires (2L + 1N + 1G) go to sub panels. Ground...
  16. S

    Please solve this SCR Current rating confusion!

    If SCR has 9000amps at 50hz non-repetitive current rating. What will be it's non-repetitive current rating for 35uS ?? Or Can we use this SCR for 3600amps / uS for 35uS ?
  17. M

    5v 2.5 amp adapter (IN 230v ac 0.2 amp max) damaging when connecting to a high power line which is carrying 50 amp current

    Hi, I have a product in which 5v 2.5 amp adapter (input 230vac 0.2 amp max) used. The adapter is burning out sometimes usually when I connect it to the one of the phase (in 3 phase line where ac >30 hp motor is connected) carrying upto 50 amp current. Now my question is why the adapters are...
  18. N

    Type B rcbos and inrush current

    Does any one have a rough idea how many 24w led panel 600x600 could go on a 10 amp type b rcbo with out tripping or a 6 amp type B rcbo I found a long circuit that complies with zs when a direct measurement is taken at its furthest point , but on length alone im sure it does not comply by...
  19. D

    Calculating inrush current for magnetic ballasts

    I need to, as accurately as possible, establish what the inrush current is for some large metal halide floodlights with magnetic ballasts and I'm drawing a blank. This is for a switchgear/DB replacement I am in the planning stages of and need to know whether these circuits can be fed from MCBs...
    • davesparks
    • Thread
    • ballasts calculating current inrush magnetic
    • Replies: 26
    • Forum: UK Electrical Forum
  20. J

    Advice on fatal current (research project)

    Hello, This question is purely for research purposes. In the event that an appliance (hairdryer) was dropped into a bath with a person on it, and a circuit breaker was tripped in the consumer unit, could this shock still prove fatal or would the breaker save their life? I know that this is...
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