RCD Tripping Ultimo
Emergency Response in Ultimo
Licensed electrician dispatched fast · 24/7 · 30–60 min
Surry Hills and Redfern combine heritage Federation terraces with mid-rise apartment infill from the 1990s and 2000s — meaning South Sydney electricians need to handle both 1900s-era wiring methods and modern strata common-property work, often within the same building street.
- A tingle, prickle, or buzz when you touch a tap, appliance, or shower fitting
- A burning, fishy, or "electrical" smell anywhere on the affected circuit
- Hot or discoloured power points on the affected circuit
- An RCD that holds for a few seconds then trips — strongly suggests a real, active leakage
- An RCD that won't trip when its TEST button is pressed — the device itself has failed
About Why Is My RCD Tripping?
RCD tripping is caused by earth leakage — most often a faulty appliance, moisture inside a fitting or cable, degraded wiring insulation, or cumulative leakage across shared circuits. If tripping repeats or returns after resetting, you have an active fault that can cause electrocution or fire; call 0433 462 902 or book a diagnostic before resetting again. Every trip must be treated as real: RCDs are the single most important shock-protection device in your switchboard.
Sydney Electrical Service handles RCD diagnostics 24/7 across every Sydney suburb — from older Federation cottages in Marrickville and Annandale to high-rise strata in Pyrmont and Zetland. Northern Beaches outdoor entertaining areas face accelerated insulation breakdown from salt air and weather, making them a frequent source of hard-to-trace earth leakage.
What to Do Right Now in Ultimo
- Open the switchboard. Find the tripped RCD (the toggle will be in the middle position, or fully OFF).
- Switch every breaker downstream of that RCD to OFF.
- Reset the RCD to ON. It should now hold because no circuits are live.
- Switch breakers back on one at a time with a 30-second pause between each.
- The breaker that re-trips the RCD is the faulty circuit.
- Unplug everything on that circuit and try again.
- If the RCD holds, plug appliances back in one at a time to find the offender.
- If it doesn't hold with everything unplugged, the fault is in the fixed wiring or a hardwired appliance — leave it OFF and call us.
Electrical work in Ultimo
EV charger common-property infrastructure builds are the leading capital-works request across South Sydney strata — adding 8–32 sub-metered charging bays per building, often combined with shared load-management systems.
Common Questions
What's the difference between an RCD and a safety switch?
What is "nuisance tripping"?
Should I test my RCD myself?
My RCD trips when I switch on the dishwasher (or kettle, dryer, washing machine). Is the appliance dead?
Why Ultimo Residents Choose Us
We are accredited Level 2 ASP contractors on Ausgrid's South Sydney grid, which means we can complete consumer-mains, point-of-attachment, and service-fuse work in a single visit — particularly valuable for the strata building common-property infrastructure that dominates our regional work.
Electricians across South Sydney
Ultimo is part of the wider South Sydney area our team covers. See our electricians across South Sydney →
24/7 Emergency Electrician — Ultimo
Licensed, local & dispatched fast. Serving Ultimo 2007 and surrounding suburbs.