Electrical safety in older HDB flats is a growing concern in Singapore. Many units built before 1985 were not equipped with RCCBs — devices that can literally save lives by preventing electric shock and electrical fires.
Recently, our team at Competent Electrician Pte Ltd completed an RCCB retrofit for a 4-room flat in Tampines. Here's what was done and why every homeowner in an older unit should consider this upgrade before the 1 July 2025 deadline.
⚡ What Is an RCCB and Why Does It Matter?
A Residual Current Circuit Breaker (RCCB) detects leakage currents — which may occur when electricity escapes a circuit and flows to ground. Without an RCCB, users can be exposed to electric shock from faulty appliances or damaged wiring.
It also protects against fire hazards by disconnecting power the moment it senses leakage beyond 30mA (as required by SS638).
🛠 What Was Done in the Tampines Flat
- Verified the flat's original DB board setup (only MCBs present)
- Installed a modular RCCB unit compliant with SS638
- Rewired the circuit to ensure all outgoing lines pass through the RCCB
- Conducted insulation resistance testing and tripping time tests
- Issued a LEW-signed completion certificate to the homeowner
🤔 Frequently Asked Questions
Q1: Is RCCB installation mandatory?
Yes. The Energy Market Authority (EMA) requires all homes built before July 1985 to have RCCB protection by 1 July 2025.
Q2: Can I get fined if I don’t retrofit?
While EMA is focusing on education and safety, insurers and HDB inspections may flag homes without RCCBs as non-compliant.
Q3: Will it affect my existing DB?
Most DBs can accommodate an RCCB. If space is tight, we can recommend a suitable reconfiguration or a compact upgrade kit.
🔧 Our RCCB Upgrade Service Includes:
- On-site safety assessment
- Supply and installation of RCCB (40A or 63A/30mA)
- DB rewiring and circuit testing
- LEW certification and documentation
- Advice on additional safety features if required
📍 Competent Electrician Pte Ltd
📞 +65 6690 3358
🌐 https://competent-electrician-sg.com
