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fault

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  1. R

    Toyota Camry - intriguing fault with headlights

    2005 Camry. Yesterday the headlights started to play up with an interesting issue. When the ignition is on + the light switch on the steering is on, the low beams do not light up. However when the high beams are turned on, both the high and low lights are on. All or nothing it seems. I thought...
  2. h.abrar94

    How to calculate the resistance of steel armour under fault conditions 70 oC for CSA 95mm2

    Hi All, hope your all well. I was hoping if I can please get some advice in regards to SWA. In Particular using SWA as CPC. Cable size 95mm2 I have a table for SWA which shows various information, in the last two columns it shows the "resistance of steel armour under fault conditions at 70...
  3. mak

    AM2 ring fault-finding headache

    How would I pinpoint a fault on a ring circuit with very little resistances, and without any visual clues, only by measuring. Say I have a break in neutral between db and first socket. How would I go about fault finding it? 1. I will use low resistance ohmmeter. 2. I will find that rn is not a...
  4. mak

    Is there a max Zs for lighting circuits?

    I can't find anything related to this in the regs so I probably misunderstood the question. The way I see it the max Zs for any lighting circuit depends on the circuit breaker for that circuit. Say we have a lighting circuit with 100x36W ceiling lights which gives us a load of 16A, we choose the...
  5. B

    Solar PV insulation fault ABB aurora inverter.

    Hi guys, I am new to the forum so be nice! I used to install solar PV systems back when the tariffs were still good, and I've never had to go back to one of my old installs because of a fault, so I'm not too clued up with regards to fault finding on PV. A customer has recently called me out to...
  6. OnlQQker

    ***URGENT*** Cosyspa (brand new) Serious fault, Advice Welcomed

    Where I'm staying at the moment, the lady ordered a cozyspa. Anyway after a day of it being plugged in the plug melted and filled the house with smoke. You'll see from the pictures the damage caused. Approx 15 minutes after it happening the company rang up and said not to plug it in and a new...
  7. M

    Guidence on some fault finding for am2 please

    Guidence on fault finding am2 please
  8. littlespark

    Most obvious fault here

    First of all, sorry I didn’t take more photos. Been to a customer to price a job and had a look at his CU. Split RCD half and half. From this picture, it appears the left hand side rcd is off, although all the circuits are powered. so. First thought, faulty rcd. Says it’s off but contacts...
  9. S

    Earth Fault at 240V Single Phase System

    Hi... I am Shamsul from Malaysia I have a question regarding to earth fault current if occur inside 240V single phase customer house/building 1.May explain how the earth fault current flow route 2.If got local earthing was connected from ground to 11kV 3phase DEAD line, is it the fault current...
  10. jackhammerJIM

    UPS Fault

    Good evening all . I am hoping someone can shed some light on a reoccurring problem in a mains room we are working in . The problem being the UPS modules display a general wiring fault whenever the ATS switches from generator back to mains . So far the UPS manufacturer and generator company...
  11. B

    High Zs RCD for fault protection?

    Hi, kind of follow on from my last post, but my boss hasn’t explained very well hoping you guys can High Zs on circuit, Can you reply on an RCD for fault protection? He’s told me if the circuit is RCD then you can use that as fault protection, obviously you can’t meet disconnection times for...

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