
Certified Electrical Engineering & Installation Services in Singapore in Singapore
Complete electrical design, power distribution wiring, DB board upgrades, lighting setup, and testing for commercial, industrial, and residential premises.
- EMA / LEW Compliant
- bizSAFE Star Certified
- 100% Guaranteed Safety


Scope of work · What's included
- 01New electrical wiring, rewiring, and sub-main cable laying
- 02Distribution Board (DB) installation, upgrading, and circuit balancing
- 03Commercial lighting, power sockets, and isolate switch fittings
- 04Cable tray, trunking, and conduit containment installation
- 05Licensed Electrical Worker (LEW) inspection, endorsement, and testing
- 06Emergency fault troubleshooting and tripping repair services
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Project record
Explore Our Electrical Work Work
06 photos

Our advantage
Why customers choose us
06 key points
- 01
Enhanced Electrical Safety
- 02
Uninterrupted Power Supply
- 03
Full EMA Code Compliance
- 04
Neat Cable Containment
- 05
Energy Efficient Setup
- 06
Scalable Power Capacity
Service scope
What's included in our service
- Electrical cable supply, trunking, conduit, and pulling
- Distribution board (DB), MCB, RCCB/ELCB, and isolator installation
- Switches, sockets, and lighting fixture terminations
- Earthing and bonding installation work
- Insulation resistance and earth fault testing
- Single Line Diagram (SLD) endorsement by Licensed Electrical Worker (LEW)

LES / Why LEGACY ENGINEERING SERVICES PTE LTD
Built on quality & trust
Certified, Singapore-registered and covering eight engineering scopes.
CodeItemDetail
- LES-01
Licensed Electrical Worker (LEW) Oversight
All installations conform to Energy Market Authority (EMA) standards and SS 638 code of practice.
- LES-02
High-Grade Fire-Rated Materials
We utilize certified copper wiring, heavy-duty breakers, and flame-retardant conduits for lasting fire safety.
- LES-03
Rapid Emergency Troubleshooting
Skilled electricians diagnose complex power trips, earth faults, and phase imbalance quickly to minimize downtime.
Scope of service
Common Electrical Issues We Solve
05 cases

- #01Frequent Power Tripping: RCD replacement and ground-fault tracing to isolate damaged wiring
- #02Overloaded DB Boards: Distribution board upgrades and circuit breaker rebalancing across phases
- #03Exposed / Unsafe Wiring: Heavy-duty PVC/GI conduit casing and structured trunking installation
- #04Low Voltage / Power Fluctuation: Cable sizing upgrades and main switchboard contact overhaul
- #05Failed EMA Inspections: Complete rectifications and official LEW endorsement documentation
- LEW endorsement is required for new electrical turn-ons, main board upgrades, three-phase power applications, and commercial submissions as mandated by the EMA.
- Single-phase supply (230V) is standard for residential and small office needs, while three-phase supply (400V) delivers higher electrical power required for commercial kitchens, heavy machinery, and large HVAC systems.
- Power trips are usually caused by an overloaded circuit, a faulty appliance causing earth leakage, or deteriorated wiring insulation triggering the Residual Current Circuit Breaker (RCCB).
- A standard commercial office rewiring project generally takes between 3 to 7 working days, depending on ceiling types, cable containment complexity, and fixture counts.
- Yes. All cables, conduits, switchgear, and safety breakers carry Safety Marks and adhere strictly to Singapore Standard SS 638.