--- title: Fault Finding Electrician | Hertfordshire & North London description: Electrical fault finding across Hertfordshire and North London. We diagnose tripping circuits, power loss and electrical faults safely and efficiently. --- - [0203 576 1546](tel:02035761546) - [mailto:info@smelectricalservices.org](mailto:info@smelectricalservices.org)[tel:02035761546](tel:02035761546)[info@smelectricalservices.org](mailto:info@smelectricalservices.org) [![SMES-Logo-NoAnim](https://www.smelectricalservices.org/hubfs/SMES-Logo-NoAnim.svg "SMES-Logo-NoAnim")](https://www.smelectricalservices.org/) [![SMES-Logo-NoAnim](https://www.smelectricalservices.org/hubfs/SMES-Logo-NoAnim.svg "SMES-Logo-NoAnim")](https://www.smelectricalservices.org/) - [Home](https://www.smelectricalservices.org) - About - [About Us](https://www.smelectricalservices.org/about-us) - [Meet the Team](https://www.smelectricalservices.org/the-team) - [Areas We Cover](https://www.smelectricalservices.org/location) - Services - [Consumer Unit Upgrades](https://www.smelectricalservices.org/consumer-unit-replacement) - [EICR Certificates](https://www.smelectricalservices.org/eicr-test-electrician) - [Electrical Fault Finding](https://www.smelectricalservices.org/fault-finding-electrician) - [Garden Lighting](https://www.smelectricalservices.org/outdoor-lighting-installation) - [Indoor Lighting Installation](https://www.smelectricalservices.org/indoor-lighting-installation) - [Additional Sockets & Switches](https://www.smelectricalservices.org/additional-sockets-switches) - [Kitchen Rewires](https://www.smelectricalservices.org/kitchen-rewires) - [Landlord Electrical Services](https://www.smelectricalservices.org/landlord-electrical-services) - [Electrical Supply](https://www.smelectricalservices.org/electrical-supply) - [Garden Rooms](https://www.smelectricalservices.org/garden-rooms) - Resources - [Blog](https://www.smelectricalservices.org/blog) - [Contact Us](https://www.smelectricalservices.org/contact) [Request a Quote](https://www.smelectricalservices.org/request-a-quote) [Book A Consultation](https://www.smelectricalservices.org/book-a-consultation) [Request a Quote](https://www.smelectricalservices.org/request-a-quote) [Book A Consultation](https://www.smelectricalservices.org/book-a-consultation) More results - [Home](https://www.smelectricalservices.org) - About - [About Us](https://www.smelectricalservices.org/about-us) - [Meet the Team](https://www.smelectricalservices.org/the-team) - [Areas We Cover](https://www.smelectricalservices.org/location) - Services - [Consumer Unit Upgrades](https://www.smelectricalservices.org/consumer-unit-replacement) - [EICR Certificates](https://www.smelectricalservices.org/eicr-test-electrician) - [Electrical Fault Finding](https://www.smelectricalservices.org/fault-finding-electrician) - [Garden Lighting](https://www.smelectricalservices.org/outdoor-lighting-installation) - [Indoor Lighting Installation](https://www.smelectricalservices.org/indoor-lighting-installation) - [Additional Sockets & Switches](https://www.smelectricalservices.org/additional-sockets-switches) - [Kitchen Rewires](https://www.smelectricalservices.org/kitchen-rewires) - [Landlord Electrical Services](https://www.smelectricalservices.org/landlord-electrical-services) - [Electrical Supply](https://www.smelectricalservices.org/electrical-supply) - [Garden Rooms](https://www.smelectricalservices.org/garden-rooms) - Resources - [Blog](https://www.smelectricalservices.org/blog) - [Contact Us](https://www.smelectricalservices.org/contact) [Request A Quote](https://www.smelectricalservices.org/request-a-quote)[Book A Consultation](https://www.smelectricalservices.org/book-a-consultation) # Fault Finding Electrician [Request A Quote](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLKXnizGppulVzXy%2FkldilYDw%2Ba2FeVAXCyx7bnN6woNTKLMMwY5cddvoXqm8HTgyPN0Ms6JsClqqGWUnBuLcux%2Fhy0FtuJ3WotLvR%2FM9P1nG10JMOIpqURbrNxiFsj%2B%2FeC5FPmq2NkgmxHY4SDi5n2oaNN8wL2Xis4EqEwVsY2KHCoF6q5mMmTXO%2FlNysV8f4yUKb5E&portalId=148804253) [Call Our Team](tel:02035761546) NICEIC Domestic Installer Which? Trusted Trader  Quote Within 1 Hour Of Site Visit 6-Year Workmanship Guarantee  ## Electrical Fault Finding Without Guesswork Tripping circuits, flickering lights and unexplained power loss can be frustrating and worrying. SM Electrical Services uses professional testing equipment and a methodical process to identify the cause and recommend the right repair. [Book A Consultation](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLImVBwfhPXaay00o7uFQHWLdOw0eNCrXWLa%2F75qbDzWlNC7FdC2gUqVnzVhP1bAj1AwMP4RsyUCejE0PH7PD82sPaNcVNK3RQ%2BJl%2BqaaNQqumuPAtfHbE%2BQx2tIX6Uwd0JoHVJt15BtsGbJl07hIfdYAPooPHpngIBc0e6DZ6uhlHeVqZ7s9VXgOLY4MUHhObCRFc0nee0yLw%3D%3D&portalId=148804253) ![switch4](https://www.smelectricalservices.org/hs-fs/hubfs/Images/switch4.webp?width=1600&height=1100&name=switch4.webp) ![image00029](https://www.smelectricalservices.org/hs-fs/hubfs/Images/image00029.webp?width=3024&height=4032&name=image00029.webp) ## Common electrical faults we investigate We help homeowners, landlords and property managers with issues including: RCDs or circuit breakers that keep tripping RCDs or circuit breakers that keep tripping Sockets or switches that have stopped working Sockets or switches that have stopped working Flickering or unreliable lighting Flickering or unreliable lighting Partial power loss Partial power loss Burning smells or signs of overheating Burning smells or signs of overheating Outdoor electrical faults Outdoor electrical faults Water ingress affecting garden lighting or sockets Water ingress affecting garden lighting or sockets Intermittent faults that appear and disappear Intermittent faults that appear and disappear Problems in garages, extensions, outbuildings and garden rooms Problems in garages, extensions, outbuildings and garden rooms Underground cable faults Underground cable faults Winter weather, damp and condensation can expose weaknesses in outdoor circuits. Garden lighting, external sockets and cables are common areas for water-related faults, particularly where fittings or connections have deteriorated. ![079](https://www.smelectricalservices.org/hs-fs/hubfs/Images/079.webp?width=1600&height=1128&name=079.webp) ## Finding the cause, not applying a temporary fix Electrical faults aren’t always located where the symptom appears. A circuit tripping inside the house may be caused by an outdoor fitting, a damaged cable or water entering a connection elsewhere. Our electricians inspect and test the relevant circuits systematically. The aim is to narrow down the cause, explain what has been found and recommend a repair that addresses the issue properly. [Contact Us](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLJSry4zed7AJhskbxBrmS3%2B%2FyF3b1asuTwvwgAZXBfuefzTP5nvbyrdLWGcsQVXr9sPYS%2BjUZplkrn8QB%2BM1QyoBdcqUNZSFe%2BOWSewBSJvJ1zZDTKCRzDlHKEJx%2Frs4gLcwOYWdgeK4S8CB%2BIzI9BAfB6s0oiPkzA3seAABkhgrezsTU55Ue2yO1NkeA%3D%3D&portalId=148804253) ## What to expect 1 #### Initial information When you contact us, describe what’s happening, when it started and whether the fault is constant or intermittent. Photographs or details of recent building work can also be useful. 2 #### Scheduled investigation We arrange an appointment based on availability. SM Electrical Services isn’t an emergency or reactive call-out service, so we can’t promise immediate or same-day attendance. 3 #### Testing and diagnosis The electrician will use appropriate test equipment to investigate the circuits, sockets, lighting, consumer unit or outdoor installation involved.  4 #### Clear remedial advice Where the cause can be identified, we’ll explain the repair required. Some faults can be resolved during the visit, while others need parts, further access or a separate quotation. [Request A Quote](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLKXnizGppulVzXy%2FkldilYDw%2Ba2FeVAXCyx7bnN6woNTKLMMwY5cddvoXqm8HTgyPN0Ms6JsClqqGWUnBuLcux%2Fhy0FtuJ3WotLvR%2FM9P1nG10JMOIpqURbrNxiFsj%2B%2FeC5FPmq2NkgmxHY4SDi5n2oaNN8wL2Xis4EqEwVsY2KHCoF6q5mMmTXO%2FlNysV8f4yUKb5E&portalId=148804253) ## When an electrical issue may need urgent action If you see smoke, flames, exposed live parts or clear signs of immediate danger, don’t wait for a scheduled visit. Move away from the affected area, isolate the power only if it’s safe to do so and contact the emergency services or an emergency electrician. A burning smell, heat around a socket or visible scorching shouldn’t be ignored. Stop using the affected item or circuit and seek professional advice. [Speak To A Specialist](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLL7%2FwURENgsjrWNCcY%2B2blPEioJoUz3GPn7oXWUENWKFhjexsUUuMw9es0jjgq6vtt%2BO0udxy67IrBfJa5DYzSpV6PIKpyTsRMvt0istgPJZDqo9IbEt8oKUssWtnbCA%2BzOU5kplGhHQULnWAA6Y6%2Bc%2BdB3EYGgdrfbvkAtKb2HHQBjJyMLYs0jM44VTiF9Mc4BKDLW%2Ff%2BBHdup&portalId=148804253) ![image00002](https://www.smelectricalservices.org/hs-fs/hubfs/Images/image00002.webp?width=4032&height=3024&name=image00002.webp) ## Frequently asked questions Why do my electrics keep tripping? A protective device trips when it detects a problem. The cause might be a faulty appliance, damaged wiring, water ingress, an overloaded circuit or another issue. Testing is needed to identify the cause safely. Can outdoor electrics cause indoor power to trip? Yes. Outdoor circuits are connected to the home’s electrical installation, so a fault caused by water, damaged fittings or underground cables can trip protection at the consumer unit. Can you find intermittent faults? Often, yes, although intermittent faults can take longer to diagnose because the issue may not be present throughout the visit. Any information about timing, weather or recent work can help narrow down the cause. Will I need a full rewire? Most faults don’t automatically mean a full rewire is needed. We’ll test the affected area and explain the evidence before recommending any significant work. How long does fault finding take? It depends on the fault and how easily it can be reproduced. Some causes are identified quickly, while complex or intermittent issues may require a longer investigation or a return visit. Can you repair the fault on the same visit? Where the cause is clear, access is available and the required parts are on hand, a repair may be possible. If not, we’ll explain the next step and provide a quotation where required. ## Arrange a professional with fault investigation Tell us what’s happening and our team will confirm whether the issue is suitable for a scheduled fault finding visit. You’ll receive clear explanations and practical next steps, not guesswork. [Book A Consultation](https://cta-eu1.hubspot.com/web-interactives/public/v1/track/click?encryptedPayload=AVxigLImVBwfhPXaay00o7uFQHWLdOw0eNCrXWLa%2F75qbDzWlNC7FdC2gUqVnzVhP1bAj1AwMP4RsyUCejE0PH7PD82sPaNcVNK3RQ%2BJl%2BqaaNQqumuPAtfHbE%2BQx2tIX6Uwd0JoHVJt15BtsGbJl07hIfdYAPooPHpngIBc0e6DZ6uhlHeVqZ7s9VXgOLY4MUHhObCRFc0nee0yLw%3D%3D&portalId=148804253) ## Trusted by homeowners across Hertfordshire & North London “Timely, competitively priced and high- quality work from SM Electricals (including installing a new plug socket and replacing an extractor fan)” Benjamin K “We’re repeat customers of Spencer and his team. They’re always polite, on time and do a fantastic job. Can’t recommend them enough!” Sebastian Thorpe “Excellent service throughout. All my electrical issues now sorted- thank you!Would highly recommended SM Electrical Services.” Eleni Keogh “We’ve used this company twice - they were very professional, approachable and thoughtful, and the work has been completed to a high standard.” Roger Quinn Get In Touch! ## Looking for a reliable electrician you can trust? Whether you're planning improvements to your home or need advice on an electrical issue, our experienced team is here to help with professional workmanship, clear communication and dependable service. [Request A Quote](https://www.smelectricalservices.org/request-a-quote) [Call Our Team](tel:02035761546) [![SMES-Logo-NoAnim](https://www.smelectricalservices.org/hubfs/SMES-Logo-NoAnim.svg "SMES-Logo-NoAnim")](https://www.smelectricalservices.org/) [info@smelectricalservices.org](mailto:info@smelectricalservices.org) [0203 576 1546](tel:02035761546) Maple House, High Street, Potters Bar, EN6 5BS VAT number: 372465288 Services - [Consumer Unit Upgrades](https://www.smelectricalservices.org/consumer-unit-replacement) - [EICR Certificates](https://www.smelectricalservices.org/eicr-test-electrician) - [Electrical Fault Finding](https://www.smelectricalservices.org/fault-finding-electrician) - [Garden Lighting](https://www.smelectricalservices.org/outdoor-lighting-installation) - [Indoor Lighting Installation](https://www.smelectricalservices.org/lighting-installation) - [Additional Sockets & Switches](https://www.smelectricalservices.org/additional-sockets-switches) - [Kitchen Rewires](https://www.smelectricalservices.org/kitchen-rewires) - [Landlord Electrical Services](https://www.smelectricalservices.org/landlord-electrical-services) - [Electrical Supply](https://www.smelectricalservices.org/electrical-supply) - [Garden Rooms](https://www.smelectricalservices.org/garden-rooms) About - [About Us](https://www.smelectricalservices.org/about-us) - [Meet The Team](https://www.smelectricalservices.org/the-team) - [Areas We Cover](https://www.smelectricalservices.org/location) Resources - [Blog](https://www.smelectricalservices.org/blog) - [Book A Consultation](https://www.smelectricalservices.org/book-a-consultation) - [Request A Quote](https://www.smelectricalservices.org/request-a-quote) [Areas We Cover](https://www.smelectricalservices.org/location) - [Potters Bar](https://www.smelectricalservices.org/electrician-potters-bar) - [St Albans](https://www.smelectricalservices.org/electrician-st-albans) - [Barnet](https://www.smelectricalservices.org/electrician-barnet) - [Enfield](https://www.smelectricalservices.org/electrician-enfield) - [North London](https://www.smelectricalservices.org/electrician-north-london) - [Hertfordshire](https://www.smelectricalservices.org/electrician-hertfordshire) © 2026 Spencer Michaels T/A SM Electrical Services. 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