DB Box Installation, Repair & Upgrade Singapore 8-Way to 24-Way Boards, LEW-Signed CoC

• Burnt smell from the DB: almost always a loose main lug or a failing main breaker. Stop using the affected circuits and call us immediately.
• Visible scorching, melting or discolouration on the MCBs or the busbar. This is a fire precursor.
• Cracked DB enclosure: usually from impact, age or water ingress (bathroom or kitchen-adjacent DBs).
• MCBs that will not stay on: sometimes a failed MCB mechanism, not a wiring fault. We test and replace if needed.
• Random trips with no clear pattern: a failing MCB at end-of-life, or a genuine circuit fault. We test both and tell you which.
• Old rewireable fuse box (pre-1990s HDB): we strongly recommend a modern MCB + RCCB DB. See Electrical Rewiring Singapore.

• New DB box for a new installation: sized to the circuit count, with 20% spare ways for future expansion. Metal-enclosed surface or flush-mounted DBs from Schneider, ABB, Hager and Legrand.
• DB box relocation: when a renovation moves the unit entrance, or the original DB sits behind a wardrobe, inside a bathroom or in a kitchen. We move the DB, extend or re-route the incoming cable and reconnect every circuit.
• Sub-DB for additions: when a home EV charger, new aircon or new kitchen circuit overloads the existing DB, we install a sub-DB fed from the main, with its own MCB and RCCB.

A DB upgrade typically involves

1. Site survey: we count existing circuits, identify the highest-draw ones and plan the new layout.
2. New DB selection: usually a 16-way or 24-way metal-enclosed DB, sized to current and future loads.
3. MCB and RCCB selection, properly rated for each circuit, with a main RCCB for the whole board.
4. New MCBs and main switch: branded, properly rated components.
5. Re-termination of every circuit with cable management, labelling and torque-checked lugs.
6. LEW inspection, testing and CoC: mandatory for any DB change in Singapore.