current

  1. D

    Does the ground wire need to be the same size as current carrying conductors?

    Running #8 to AC condensor. Does the ground wire need to be #8 as well?
  2. E

    Current 18th Edition Compliance

    Hi guys, I expect this topic has been covered before, In rented accommodation including business premises, should the electrical installation be up to current BS 7671 Regulations.
  3. newfutile

    Strange Residual Current Device tripping on lamp post

    During a recent EICR the RCBO keeps tripping , i measure leakage of 2.6 ma when clamped around line and neutral, when i clamp the cpc i get over 10 ma ,its a PME supply 0.09 ZE. These RCBOs have a functional earth , the RCBO ramp tested at 21 ma . does anyone have any idea why this is...
  4. Kartune

    3S4P BMS Balance Charging Board lower charge current than expected?

    Items i'm using for this battery pack: 1x ~ HX-3S-FL25A-A BMS Balance Charging Board 9x ~ 18650 (3000mAh, 15A Continuous Discharge) 12.6v 2A AC/DC Adapter Renogy 24V 50Watt Solar Panel Li-on 12-24V 50A Solar Charge Controller ISDT 1S-8S Battery Monitor So when my battery is about 12V, i can see...
  5. G

    low current draw on strip lighting

  6. D

    Prospective fault current testing

    hi, new to this forum and still training. During testing for prospective fault current at the point I get a bad reading, what ever that may be????, what possible situations would be causing and why? still trying to get my head round it... thanks Adam
  7. E

    Equipotential Bond Current showing on Clamp meter earthing

    Hi has anybody come across current up to 3 amps showing on water bond? 0 volts, no amps on main earth just water bond? I put a clamp Meyer to check...
    • Emco Elec
    • Thread
    • ausie elec clamp current earthing equipotential meter showing
    • Replies: 7
    • Forum: Australia
  8. Pastory

    (basic question) why is current the same in series connection.

    (basic question) why is current the same in series connection. An explanation in 3d video would be very helpful
  9. sjhall

    Led driver help required

    Hi Looking for a bit of advice on a led driver The Aurora in the picture below is the one that needs replacing today / tmrw And the only 700ma constant current driver I can find local has slightly different specs DC 16.5v max on the original 33 - 40v dc out on the new one Will this work...
  10. Daniel DD

    Relays, Contactor Rating AC-7a & AC-7b, Relay - Contactor compatibility, RCCB rated current

    Background I live in Indonesia, the voltage for residential buildings ranges from 220 V to 230 V, I need help with the installation of the Schneider products. Here is another link to the thread about the installation of Surge Arrester in Picture 1, which is related to the installation discussed...
  11. g3nt73m4n

    Using disconnect switch over its operating current Ie

    Hello, What happens if we use disconnect switch over its operating curent Ie? For ex. If our circuit is motor circuit and current range is 140A. We need to use 160A. But we used a disconnect switch with operating current Ie as 125A not 160A. Making and breaking capacity of a disconnect...
  12. E

    Why does design current affect vd

    Hi, apologies if im having a bald moment but anyone know why Ib effects vd ? is it related to ohms law ? 😵‍💫
  13. Jhon M

    Non-adiabatic short circuit current for cable screen/sheath BS 7454

    Hello all, I have a question please concerning the calculation of the non-adiabatic factor for screen/sheath with a case that is not mentioned clearly in BS 7454 If we have a cable with below construction: CU/SC/XLPE/SC/CU WIRES/LEAD/PE outer sheath As per BS 7454 paragraph 6, the formula...
  14. B

    Current transformer metering producing implausible readings

    Edited - please read right to the end! Grateful for any advice regarding CT metering which seems to be generating inaccurate/implausible readings. Our charity has a commercial building with 3-phase connection into a busbar chamber at one end - let’s call us ABC. The rest of the chamber...
  15. C

    Combining cables to increase current capacity?

    I have a problem and I think I have a solution but wanted to throw it out there to check it is acceptable.. First floor flat with two fuseboards - 1 24hr and 1 Night time economy. The boards are being supplied by two armoured cables coming from separate isolators/meters (60A) from the ground...
  16. D

    Current= voltage/resistance

    It is said that current equals voltage divided by resistance however in what instance is that true? A 9-volt battery gives off 2.7 amps I can make a generator that creates 27 volts but only gives off one amp in what way work? You can't tell me that 26 amps is being burnt off by 180 ft of 28...
  17. E

    Motor FLC, Rated current, running current and nominal current.

    Good evening, 1) Is the motor current on the nameplate always the full load current: the maximum current the motor can draw without there being damage to its winding insulation. 2) Often in motor books, I see the term nominal current? is this the current that the motor draws under normal...
  18. F

    what is tabulated Rating of current

    Dear friends, I am learning electrical design and during this process I have seen a new term "tabulted Rating" could you please guide me?
  19. C

    Opinion on current fusebox

    Hi, Moved into a property of late that has the following fuse box. Got advice telling me that it's safe, but doesn't meet current regulations, as well as that it could go in the next year, or last another 15. Want to get opinions on next steps. Ideally, I'd like to replace it with a consumer...
  20. diywarrios

    Cooker hood - connection but no current

    hi all, i recently bought a flat and got a years old cooker hood in it.. which i am trying to replace.. all done but the connection inside it does not have power... tried all the switches on and stuff but still no joy.. any place where is should check .. or how to find the fault or where the...
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