Your RCDs are your last line of defence against electric shock. We test trip sensitivity, response times, and circuit discrimination to ensure your residual current devices will protect you when it matters most.
RCDs must trip within 300ms at their rated residual current and within 40ms at 5x rating. We use professional RCD testers to verify trip times, check for nuisance tripping causes, and test selective discrimination between upstream and downstream devices. If your RCDs are outdated, slow, or incorrectly rated, we advise on upgrades to modern RCBOs or type-specific RCDs (Type A, F, or B) for enhanced protection against DC fault currents and variable speed drives.
Why Choose RTS for RCD Testing?
- Professional-grade RCD test equipment
- Understands discrimination and selectivity
- Recommends correct RCD type for your loads
- Full testing report provided
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NAPIT Certified · Fully Insured · 15+ Years
RCD Testing Services We Provide
RCD trip time and sensitivity testing
Selective discrimination assessment
Nuisance tripping investigation
Type A, F, and B RCD upgrades
RCBO installation for individual circuit protection
Testing report with pass/fail results
Benefits of Professional RCD Testing
Confirms RCDs will save your life in a fault
Identifies slow or failing devices before they let you down
Resolves nuisance tripping that causes frustration
Upgrades to modern standards for maximum protection
Required for insurance and safety compliance
Ready to Get Started?
Contact RTS Electrical today for a free, no-obligation quote on your rcd testing in Flintshire.
Frequently Asked Questions — RCD Testing
How often should RCDs be tested?
Why does my RCD trip when it rains?
What is the difference between Type A and AC RCDs?
“What Our Customers Say”
Real reviews from real customers across Flintshire
“Rob and Kieron were brilliant - very polite and efficient and also answered all my questions clearly. Will certainly use again. Definitely recommended. Thank you!”
Kathy Jones
Flintshire · 2 years ago
Get Your Free RCD Testing Quote
Tell us about your project and we will get back to you within 1 hour with a no-obligation quote. We cover all of Flintshire and North Wales.