Same-day attendance

Help — rcd keeps tripping at a Newport property

The practical question for a Newport property is not what usually happens, but what this installation actually shows when it is tested. The schedule of results records it either way.

Ask three electricians about rcd keeps tripping and you may get three answers. Ours is based on what the readings say. We charge for the diagnosis, not for parts you don't need. We do not upsell a full replacement where a component is at fault, and we do not patch something that has reached the end of its life. We would rather rule out RCD keeps tripping early than discover it late.

We are NICEIC-registered, Part P notifiable, and every visit ends with a written certificate. The regulations set the standard; RCD keeps tripping sets the effort required to meet it at your particular address in Newport City Council. Most Newport visits settle this within the first hour. The starting question with rcd keeps tripping is always the same: what does the existing installation test at?

When to stop and call

If you can't isolate a single circuit or appliance and the RCD trips within seconds of reset, call — it's a wiring fault, not an appliance.

Likely causes

Cumulative earth leakage from multiple circuits sharing one 30mA RCD — each circuit is fine alone but together they exceed the threshold.
A faulty heating element (immersion, shower, oven, dishwasher) leaking to earth.
Moisture in an outdoor socket, security light or garden circuit.
A failed neutral-to-earth connection inside an appliance.

How we fix it

We insulation-test to identify the leaking circuit, then trace to accessory or appliance. Where the board is a shared-RCD split-load design at end-of-life, we quote an RCBO upgrade so each circuit has its own dedicated protection.

Typical price: £95–£180 diagnosis + repair. RCBO board upgrade £550–£950 depending on circuit count.

Safe checks you can do first

Turn every MCB under the RCD off, reset the RCD, then bring circuits back one at a time to find the offending one.
On the offending circuit, unplug appliances one at a time.
Note whether it trips more often in wet weather — a strong clue for outdoor water ingress.

Newport context

Most enquiries about this start with a symptom and end with RCD keeps tripping. We would rather set that expectation now than on the day. Older installations around NP10–NP20 show this more often than newer ones.

FAQs — rcd keeps tripping in Newport

Should I upgrade to RCBOs?+

If nuisance tripping is chronic and the board is 10+ years old, yes — RCBOs give per-circuit protection and eliminate the shared-threshold problem.

How long until you can attend?+

Same-day for genuine no-power situations; next-day for intermittent trips you can work around.

Start with a survey — RCD keeps tripping in Newport

Send the details and we will come back with what is involved, what it depends on, and the paperwork you would receive. We cover Newport and the NP10–NP20 postcodes, including Cwmbran, for rcd keeps tripping. Let us know your preferred access times — tenanted property in Newport is arranged around the tenant, not around us.

Call 07949 398 752 Request a quote

In summary

Rcd keeps tripping here means an inspection, a set of readings and a scope you can check line by line. The intention of this page is to save you a wasted visit, not to create one. Where a smaller repair solves it, that is what gets quoted.