Main information
What it includes
Checking and replacing RCDs (residual current devices) that trip repeatedly, don't respond to the test button, or show other faults.
Typical process
Tell us when the RCD trips → the electrician isolates the circuit causing it on site → diagnosis → repair or replacement of the RCD if needed.
Scope and availability
There's no way to know the cause before it's checked. If the RCD trips, don't force it: call and a professional electrician will come out to check and diagnose it.
Frequently asked questions
Why does the RCD only trip with certain appliances?
We can't say without checking it; locating the exact cause is the electrician's job, not something to test yourself at home.
Is it normal for the RCD not to respond to the test button?
No, that button should always trip the RCD; if it doesn't respond, it's worth checking or replacing.
How many RCDs should my installation have?
Depends on the size and age of the installation; assessed during the check to see if current protection is enough.
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Need assistance?
Describe the issue and area. Availability and scope are confirmed before work begins.