short circuit

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  1. T

    Stuttering short circuit in a single circuit (several sockets)? How to identify short circuit?

    Hello. There is a persistent short circuit on a circuit (a fuse switch). All plugs have been unplugged. All sockets are free. I have continuous beeping continuity and “30 Ohm” resistance on several sockets. I also have 30 ohms on one outlet, but a stuttering beep. Can I narrow it down by...
  2. K

    UK RCBO indicator , short circuit or earth fault.

    Anyone know of an RCBO manufacturer, apart from Chint,that includes an indicator in the RCBO to indicate if the trip is a earth fault or an overload.
    • kendo57
    • Thread
    • circuit earth fault indicator overload rcbo short short circuit
    • Replies: 2
    • Forum: UK Electrical Forum
  3. kassem999999999

    can all car modules cause a short circuit? test light stays on unless i unplug every single module?

    can every single car module cause a short circuit? my test light stays on between batt and terminal unless i unplug every single module? any advice?
  4. S

    How to co-ordinate circuit breakers trip for overload and short circuit?

    Can 50A B type circuit breaker be coordinated with upstream 50A C type circuit breaker to trip earlier on shorts and current overloads?
    • SparkyAus
    • Thread
    • ausie elec breakers circuit circuit breakers how to overload short short circuit trip
    • Replies: 1
    • Forum: Australia
  5. B

    L-N short circuit MCB not tripping

    Hi all, I’m hoping you can shed some light on a problem I found. Please be gentle, I’m an industrial spark, not a domestic spark. I’ve been asked to look at a family members electrics as they are renovating a room. A cowboy spark has been in and messed the job up. I was asked to come in and...
  6. L

    Electric shower case: short circuits (?) and RCBO

    Hello, I have just posted in the Electrician's section one photo and two videos of what I believe to be a dangerous situation of short circuits happening within a shower unit. You can see (also here attached): 1) Extensive burn marks on the plastic cover; 2) A vast amount of water leaking from...
  7. WhatsApp Video 2021-08-09 at 20.34.17.mp4

    WhatsApp Video 2021-08-09 at 20.34.17.mp4

    Water leakage from electric shower
    • LonniSet
    • Media item
    • rcbo short circuit
    • Comments: 0
    • Category: Electrical Videos
  8. WhatsApp Video 2021-08-09 at 20.34.26.mp4

    WhatsApp Video 2021-08-09 at 20.34.26.mp4

    Water trapped in electric shower
    • LonniSet
    • Media item
    • rcbo short circuit
    • Comments: 0
    • Category: Electrical Videos
  9. IMG_20210819_121629.jpg

    IMG_20210819_121629.jpg

    Burn marks on electric shower cover
    • LonniSet
    • Media item
    • rcbo short circuit
    • Comments: 0
    • Category: Electrical Videos
  10. D

    Tracing a rain-related short circuit

    I have an intermittent short on a circuit with a GFCI breaker and some outdoor fixtures. The breaker pops after a significant rain and won't reset until after several dry days. I've tried to isolate the break by disconnecting the outdoor fixtures sequentially with no luck. Now I'm doing...
  11. 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...
  12. Daniel DD

    Surge Arrester Installation and External Short Circuit Protection Device

    BACKGROUND I live in a small town where it is difficult to find ceritified electricians. In fact, electrician certification is not common for residential installations. I did find some experienced electricians but I don't think they are certified and know best practices in the installation. I...
    • Daniel DD
    • Thread
    • circuit circuit protection device external installation protection short short circuit surge surge protection voltage drop
    • Replies: 1
    • Forum: DIY Electrical Advice
  13. N

    Coincidence? Continuity?

    Hello, Back in November I had a dedicated circuit installed for a garage door opener. Over the next few days and ever since I noticed my dryer would sometimes be blinking "PF" (power fail). The breaker was never tripped and by the time I'd notice the error code on the dryer, everything would be...
  14. 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
  15. cliffed

    Short circuit protection on high resistance on live conductors

    Thoughts on this scenario,obviously a short circuit fault situation
  16. C

    Conductor Short Circuit Temprature

    Ok, say I have a 2.5mm2 or 3.31mm2 copper conductor 90*C rated. 100,000 amps of available fault current. 277/480 volt Y system, TN-C-S. MCB protection. Would the conductor survive such a short circuit? How do I determine this?
  17. Z

    Selv circuit - short circuit - bulbs blown

    Garden lighting 12V AC from transformer wired with 2 wire and extension cables ran 2 LED lights in parallel. Unfortunately water and mud managed to cause a short circuit. The two lamp bulbs blown were further away from the transformer than the fault. Q1. Is this expected? Q2. Is there an easy...
  18. S

    Difference between dead short and short circuit

    Hi looking for some help about faults and symptoms and difference between short circuit, dead short, and overcurrent to know which fault you have. Is short circuit line and and neutral fault dead short zero resistance and a tripped breaker And overcurrent to much current in circuit causing...
  19. N

    Short circuit

    HELLO i had an short circuit in my house!neutral to live short circuit! the 30a old mcb is tripped but the 1361 13a fuse in the plug did not disconected! why did not disconnect 13a 1361 fuse sooner then 30a mcb? I tested the fuse in the plug still good, so the short circuit did not reach to...
  20. I

    Open & Short circuit

    Evening all, I'm new to this so apologies in advance if I'm posting in the wrong threads. I'm an apprentice electrician. Due to the ongoing pandemic, my college assignments are currently being handed out online with very little communication and interaction from the tutors. I'm struggling with...
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