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As the rainy season approaches, many homeowners notice their garden lights triggering the RCD, leaving outdoor circuits unusable. This is a frequent issue I, the Fulham Electrician at MGB Electrical Solutions Ltd, encounter during Electrical Installation Condition Reports (EICRs) or call-outs for fault finding. Let’s explore the reasons behind this and how to prevent it.
What is an RCD?
An RCD (Residual Current Device) is a safety device designed to protect people from electric shock. It works by cutting off the power supply when it detects an imbalance between live and neutral currents—indicating a potential leak of electricity to the ground, often caused by faults like water ingress or damaged insulation. RCDs are essential in modern electrical installations, especially in outdoor circuits, where risks of exposure to moisture and damage are high.
Common Causes of RCD Tripping in Garden Circuits
- Water Ingress in Connection Boxes
Poorly sealed connection boxes allow water to seep in during heavy rains, causing electrical leakage and tripping the RCD. - Damaged Garden Lights
Broken or aged garden lights often develop cracks or gaps, allowing moisture to penetrate. This not only trips the RCD but also poses a risk of short circuits. - Animals Damaging Wiring
Wildlife, such as squirrels or rodents, can chew through outdoor cables, exposing the wires and causing faults in the circuit.
Best Ways to Secure Outdoor Wiring
To avoid these issues, proper installation and protective measures are key:
- Wiska Boxes: Weatherproof connection boxes with IP-rated seals to protect against water ingress.
- WAGO Gel Connectors: Pre-filled gel connectors designed to provide a water-tight seal for cable connections.
- Ray Gel and Wiska Gel: Gel-filled enclosures that encapsulate connections, making them impervious to moisture.
- Robust Cables: Use high-quality, UV-resistant, and armoured cables to withstand outdoor conditions and resist animal damage.
I always recommend sourcing these materials from trusted suppliers. One such reliable local trade counter is Electrical4Less, located in Fulham. They stock a wide range of outdoor wiring solutions to help you secure your garden circuits.
Why Choose Fulham Electrician?
With years of experience as a fully qualified and insured electrician, I specialise in fault finding, consumer unit replacements, and EICR inspections. As a NAPIT-registered electrician, I ensure all work meets the highest safety standards. When you choose MGB Electrical Solutions Ltd, you’re choosing expertise, trust, and local support.
FAQs
Yes, they can. RCDs detect imbalances between live, neutral, and earth currents. Since most light switches only disconnect the line conductor, faults like water ingress or damaged wiring can still create a leak between neutral and earth, causing the RCD to trip even when the lights are off.
It’s not recommended. Outdoor electrical systems require professional expertise to ensure safe and compliant repairs.
It’s advisable to inspect your outdoor wiring annually or during an EICR to ensure everything is in good condition.
Visit Electrical4Less in Fulham for a variety of outdoor electrical solutions, including Wiska boxes, WAGO connectors, and more.
Rain increases the likelihood of water ingress in outdoor circuits, which can cause electrical leakage and trip the RCD.
Support Local Fulham Businesses
As a Fulham resident, I’m proud to support local businesses like Electrical4Less. Together, we ensure safe and reliable solutions for all your electrical needs. Contact me, the Fulham Electrician, for professional advice and repairs.
For quality materials, visit Electrical4Less at their Fulham trade counter. Let’s work together to keep your home safe, rain or shine.
