About Our Fault Analysis & Troubleshooting Service

Electrical faults can range from a mildly irritating tripping breaker to a dangerous hidden wiring fault that poses a serious fire or electrocution risk. At Andrex Electricals Systems, our fault analysis and troubleshooting service is designed to locate and rectify electrical problems quickly, safely, and permanently. We use professional-grade test instruments and a systematic diagnostic approach to find the root cause of the fault — not just the symptom — and we provide a clear written report of our findings along with recommendations to prevent a recurrence.

Tripping Breakers & Earth Leakage Faults

One of the most common electrical problems we are called to investigate is a circuit breaker or RCD (residual current device) that keeps tripping. While a tripping breaker is often dismissed as a nuisance, it is actually the system doing exactly what it is designed to do — protect against an underlying fault. Our engineers carry out a methodical investigation to identify whether the fault is a sustained overload on a circuit, an insulation breakdown in the wiring, a faulty appliance creating an earth fault, or a genuine defect in the protective device itself. We isolate the fault, carry out the necessary remedial work, and test the system fully before restoring power.

Wiring Faults, Short Circuits & Phase Failures

Hidden wiring faults are among the most challenging electrical problems to locate. They can be caused by rodent damage, nail or screw penetration of cables during construction, water ingress, or the gradual deterioration of ageing cable insulation. Using insulation resistance testers, loop impedance testers, and time-domain reflectometers, our team can precisely locate a fault in a cable run without the need for unnecessary damage to walls or floors. Short circuit investigations require careful, safe isolation procedures and systematic testing — skills our electricians are trained and equipped to carry out efficiently.

Thermal Imaging & Power Quality Analysis

Some electrical faults are not immediately visible or detectable by standard testing — they manifest as excessive heat at connection points, overloaded circuits, or harmonic distortion in the supply. We use thermal imaging cameras to identify hot spots in distribution boards, switchgear, and wiring before they cause a fire or equipment failure. For industrial and commercial clients, we also offer power quality analysis to measure harmonic distortion, voltage unbalance, and power factor — providing data that can be used to reduce electricity costs and protect sensitive electronic equipment from damage caused by a poor quality supply.

Emergency Response & Preventive Reporting

We understand that an electrical fault can bring a household or business to a standstill. That is why we prioritise emergency fault calls and aim to respond as quickly as possible — often within hours of your call. Where safe to do so, we carry out fault rectification on the same visit, getting your power restored without delay. Following every fault investigation, we provide a written report detailing what was found, what was done, and any further preventive recommendations. This documentation is valuable for insurance purposes, regulatory compliance, and your own records.