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Testing & Fault Finding

There is a generally recognised method of approaching fault-finding , which is referred to as the 5-Point FaultFinding approach… the most important factor in this method concerns attaining as much ‘information’ as possible regarding the ‘cause & effect’ of the fault, as follows….

  1. Gather Information – Ask as many people as possible who where there,  when & how the fault occurred
  2. Analyse Information – decide the probable cause based on past experience & training
  3. Investigate – now attempt to find the fault from your analysis
  4. Rectify – once found, safely repair the fault
  5. Test – when the fault is put right & restored, test your work before re-energising

It is understood that sometimes it is not easy to get this information, as you may be the only person on site & no one is there to explain ‘what happened’, but you need to go the extra half mile to find out, as it will make your job much easier…

Standard/Fundamental Faults
The following is a concise list of typical faults that are the most common causes of a circuit ceasing to operate correctly. Once you learn the symptoms of each it should become straightforward to resolve the issues you will encounter…

Loss of Supply
 Why (Loose Connection – Tripped CB – Blown Fuse – Internal Fuse)

Earth Fault
 Tripping Circuit Breaker/RCD – device will not re-engage (or will for a short while – then possibly a switched circuit contains the fault)

Dead Short
 Phase to Neutral/Phase to Phase – has the main fuse at origin blown

Correct Protective Device in place
 Type B – Type C – Type D Circuit Breakers / S’Type RCD’s

Defective Components
 Switches – Relays –Contactors, etc, not functioning correctly (brings about the decision as to replace or repair)

Breakdown of Control Circuits
 Internal Wiring/PCB’s & Electronics (How far to go for an ‘electircian’)

Reversed Polarity
At supply Origin – at a single outlet (Phase Neutral reversed or neutral earth reversed) or at a single fitting (Phase – Neutral) – Live Test Vs Dead Test.

Mostly seen in Industry
Control Circuits (Internal Fuses) – Contactors (Breakdown of Parts)  – 3PH motors (Loss of  Phases &/Or burnt out coils) – Single Phase Motors – (Carbon Brushes)

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Customer Reviews

Titouan Millet
Titouan Millet
2022-10-23
The technicians came and put spotlights on our new place and did an outstanding job, really tidy and even cleaned up after themselves. Definitely my go to for anything electric in the future! 5 stars!
April Ellison
April Ellison
2022-10-16
Excellent service, did a fantastic job and did it at short notice. Thank you very reliable electricians I would highly recommend and use your services again in the future.
Jafar bin Noman
Jafar bin Noman
2022-10-15
This team rewired my entire house. I was impressed start to finish. He was very professional and punctual which made the whole experience so much easier. They worked around my busy schedule and fit in other workers while renovating my house. I would recommend him to anyone looking for an electrician in Cardiff and would use him again in the future.
martyn fisher
martyn fisher
2022-10-13
Top quality and very professional service . Ryan went above expectations to help me out and sort my workshops . Top service thanks
Fabrizio Lugani
Fabrizio Lugani
2022-10-12
Recently hired these electricians to do a complete redo on our new home and the service was great the gentleman who came to do the job was very knowledgeable and did a great job. Will definitely use them again in the future.
Jimmy Beats
Jimmy Beats
2022-10-12
Came and re wired a dated electrical system in my mothers home , they came and gave the best quote, they were very polite and respectable to my elderly mother and went out of there way to help her during the installation, they moved all furniture and appliances etc without charge and put everything back after themselves? Very efficient aswell , the job was done in good time,they left it clean and tidy,and my mother is very happy as am I, would 100% recommend to anyone needing electrical services , try them first trust me
Rhys Ruck
Rhys Ruck
2022-10-12
Very professional I would definitely recommend! The work was quality and efficient and so was they
dei linda
dei linda
2022-10-11
Found Rylec online,they provided prompt attention to a trip fault in the house, upgraded our consumer unit and upgraded the supply to our garage .Great work all round,from Ryan's organisation to Chris's experience.Highly recommended.
Andrew Ross
Andrew Ross
2022-10-11
Highly recommended! Rylec are very professional, friendly and efficient they installed our fan extractor in the bathroom, fixed the garden lighting and repaired our old garden lamppost and water feature. We are very pleased with the results. Will use them again. Thank you!
Maninder Powar
Maninder Powar
2022-10-11
Ryan is professional, knowledgeable, explains things clearly and gives sound options and advice. Clear and transparent invoicing. Will continue to use his services.

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