RCD Testing
Across South Wales
Professional RCD testing and replacement services to ensure your residual current devices are protecting you from electric shock. NAPIT approved electricians serving Cardiff, Newport, Swansea and all of South Wales.
RCD Testing Services in South Wales
A Residual Current Device (RCD) is your last line of defence against electric shock. It monitors the current flowing through circuits and trips within milliseconds if it detects current leaking to earth – potentially saving your life. But RCDs can fail, and regular testing is essential.
At Megalec Electrical Solutions, we provide professional RCD testing across South Wales. Using calibrated test equipment, we verify that your RCDs trip at the correct current and within the required time. If an RCD fails testing, we can replace it immediately.
RCD testing is included in every EICR inspection, but can also be carried out as a standalone service. We recommend testing your RCDs at least every 6 months using the test button, with professional testing annually. Serving Cardiff, Newport, Swansea, Bridgend, Caerphilly, Pontypridd and surrounding areas.
Why RCD Testing Is Essential
Your life-saving device needs checking
Verified Protection
Professional testing confirms your RCDs trip at the correct sensitivity (30mA) and within the required time (300ms or less).
Quick Service
RCD testing is a quick procedure. We can test all your RCDs and provide results within a short visit.
Immediate Replacement
If an RCD fails testing, we carry replacement units on our van and can fit a new one immediately.
NAPIT Approved
All testing carried out by NAPIT approved electricians using calibrated professional test equipment.
Domestic & Commercial
We test RCDs in homes, rental properties, offices, shops, and commercial premises across South Wales.
Test Certificates
Written confirmation of test results provided. Essential for landlord compliance and insurance records.
Our RCD Testing Process
Quick, accurate, certified
Book a Test
Contact us to arrange a convenient time. RCD testing can often be combined with other electrical work.
Professional Testing
Using calibrated equipment, we test each RCD at rated current and 5x rated current to verify trip times.
Results & Report
Clear results showing pass/fail for each RCD with measured trip times. Recommendations provided if needed.
Replace if Needed
Any failed RCDs can be replaced immediately with quality units. Certificates issued for all work.
Book a Test
Contact us to arrange a convenient time. RCD testing can often be combined with other electrical work.
Professional Testing
Using calibrated equipment, we test each RCD at rated current and 5x rated current to verify trip times.
Results & Report
Clear results showing pass/fail for each RCD with measured trip times. Recommendations provided if needed.
Replace if Needed
Any failed RCDs can be replaced immediately with quality units. Certificates issued for all work.
Why Do RCDs Need Regular Testing?
RCDs are mechanical devices that can fail over time. Internal contacts can corrode, mechanisms can seize, and electronic components can degrade. A failed RCD provides zero protection against electric shock. Regular testing ensures your RCDs will work when you need them most.
Service Areas Across South Wales
Available throughout Cardiff, Newport, Swansea, Bridgend & surrounding areas
Frequently Asked Questions
You should press the test button on your RCDs every 6 months to check the mechanism works. Professional testing with calibrated equipment should be carried out at least annually, or as part of your regular EICR inspection.
Standalone RCD testing typically costs £60-£100 depending on the number of RCDs. If an RCD needs replacing, a new unit plus fitting costs around £100-£180. RCD testing is included in EICR inspections at no extra charge.
If an RCD fails to trip at the correct current or within the required time, it must be replaced. We carry replacement RCDs on our van and can fit a new one immediately during the same visit.
The test button checks that the trip mechanism works, but it doesn't verify the sensitivity or trip time. Professional testing with calibrated equipment measures the exact trip current and time to confirm the RCD meets safety standards.
Most modern consumer units have RCDs, but older properties may not. If your property doesn't have RCD protection, we strongly recommend upgrading your consumer unit. RCD protection is a requirement under current wiring regulations.
Frequent RCD tripping usually indicates a fault on one of the circuits it protects. Common causes include faulty appliances, damaged wiring, moisture ingress, or a deteriorating RCD. We can carry out fault finding to identify and resolve the cause.
Need RCD Testing in South Wales?
Ensure your RCDs are protecting you properly. Contact Megalec today for professional RCD testing across South Wales.