Industrial Electrical Rewiring Singapore | Factory & Warehouse

A factory or warehouse rewire is one of the most consequential electrical projects a business can take on. It happens rarely — usually every 15 to 25 years — and when it does, the stakes are production downtime, regulatory non-compliance, and worker safety. You do not get to “fix it again next quarter” if the rewire is done wrong. This is a once-or-twice-in-a-generation project, and it has to be done right the first time.

TRUST ELECTRICIANS provides complete industrial electrical rewiring across Singapore — for factories, warehouses, production plants, manufacturing facilities, logistics centres, and workshops. We plan around your shutdown schedule, coordinate with the relevant authorities, and deliver LEW-endorsed, CoC-issued work that stands up to EMA, MOM, and SCDF scrutiny.

✅ BCA Registered ✅ LEW-Certified ✅ EMA-Compliant ✅ MOM / SCDF Aware ✅ Factory / Warehouse / Plant ✅ Shutdown & Off-Hours Work

When an Industrial Rewire Is the Right Answer

Industrial rewires are driven by a small number of triggers. The most common:

The facility is 20+ years old and has never had a full rewire. The original installation may be using cables and switchgear that are well past their rated life.
The facility has been through multiple partial upgrades — different contractors over the years, none of them with a master plan. The result is an installation that “works” but is undocumented, non-compliant, and risky.
A major incident — fire, flood, lightning strike, or a serious electrical fault has damaged part of the installation and the rest is now exposed as questionable.
A change of use or production capacity — new machinery, higher load, expanded production. The existing installation cannot safely handle the new demand.
Regulatory or insurance requirement — EMA inspection has identified non-compliances, or the insurer is requiring an upgrade.
A pre-sale or pre-handover condition — for a facility being sold or transferred, the buyer or the buyer’s bank is asking for a recent CoC and a known-good installation.

If any of these apply, a full industrial rewire is on the table. The next step is a site survey and a feasibility conversation — see our Industrial Electrician Singapore page for the broader industrial scope.

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Factory Electrical Rewiring

For manufacturing facilities, production plants, and processing facilities. The work here is characterised by 3-phase distribution, high-load machinery, and the need to minimise production loss.

Common factory rewire scope:

Complete cable rewire — replacement of every power and lighting cable, properly sized for the new load
Main switchgear replacement — ACB or MCCB upgrade as required. See our Industrial Electrician Singapore page for the switchgear scope.
Sub-DB and distribution board replacement — to match the new circuit count and load profile
Machinery supply rewire — dedicated circuits for each major piece of equipment, with proper isolation and protection
Earthing system upgrade — often the most overlooked part of an industrial rewire, and the one that most affects safety
Production line reconfiguration — when the rewire is part of a production line move or expansion
Power factor correction — for facilities with poor power factor (penalised by SP Services on the bill)

Factory rewires are typically planned around a major production shutdown — see the shutdown planning section below.

Warehouse & Logistics Facility Rewiring

For warehouses, distribution centres, and logistics facilities. The work here is typically a mix of high-bay lighting, 3-phase distribution, and dedicated circuits for material handling equipment.

Common warehouse rewire scope:

High-bay and low-bay lighting — replacement of the entire lighting system, often as part of an LED retrofit. See our Lighting Electrician Singapore page for the lighting detail.
Dock door and roller door power — dedicated circuits with proper isolators
Battery charging stations for electric forklifts and pallet trucks — a growing requirement as fleets electrify
Conveyor and sortation system power — coordinated with the material handling system installer
3-phase sockets for industrial equipment — 16A, 32A, 63A, as needed
Lightning protection and surge protection — for facilities with sensitive inventory or equipment

Production Line & Machinery Electrical Rewiring

For production lines, machine tools, and process equipment. The work here is usually tied to a specific production reconfiguration or a machine upgrade.

Single-machine electrical supply — dedicated circuit from the DB to the machine, with proper isolation and protection
Production line electrical infrastructure — multi-machine supply with coordinated protection, often with a dedicated sub-DB
Machine relocation electrical work — disconnect, re-route, reconnect, with proper testing before re-commissioning
Soft starter and VFD (Variable Frequency Drive) installation — for motors that need soft starting or speed control
Control panel wiring — for PLC-controlled machinery, coordinated with the machine supplier

For the broader machinery and production line context, see our Industrial Electrician Singapore page.

High-Load & 3-Phase Distribution

Almost every industrial facility runs on 3-phase. A rewire is the natural time to upgrade or redesign the 3-phase distribution across the facility. We handle:

SP Services application for new or upgraded 3-phase supply
Main breaker and busbar sizing and installation
3-phase sub-DB design for facility-wide distribution
Power factor correction for facilities with poor power factor
Load balancing across the three phases to maximise headroom
Cable sizing for high-load circuits (95 mm², 120 mm², 185 mm² and above)

For the residential and light-commercial 3-phase scope, see our 3-Phase Power Installation Singapore page.

Industrial Switchgear (ACB / MCCB)

If your facility has an ACB or an MCCB, the rewire is the right time to inspect, test, and (if needed) replace the main switchgear. We supply, install, test, and maintain:

ACB (Air Circuit Breaker) — for main incomers and high-amperage distribution. Typical ratings 800A to 6300A. We work with Schneider (Masterpact), ABB (Emax), and Siemens (3WL) ACBs.
MCCB (Moulded Case Circuit Breaker) — for sub-distribution and large feeder circuits. Typical ratings 100A to 1600A. Common brands: Schneider (Compact NSX), ABB (Tmax XT), Eaton, Terasaki.
Protection relay testing — for ACBs with electronic trip units
Switchgear maintenance — annual or semi-annual inspection, cleaning, and tightening

For the broader industrial switchgear context, see our Industrial Electrician Singapore page.

Shutdown / Off-Hours Works to Minimise Downtime

A factory rewire that takes 6 weeks of working days is a factory that has lost 6 weeks of production. That is rarely acceptable. The way to make a rewire viable for a production facility is to plan it around your existing shutdown schedule.

Common shutdown patterns we work with:

Annual maintenance shutdown — typically 1–2 weeks once a year, often around Chinese New Year or the December holiday window. We use this window for the most disruptive parts of the rewire (DB swap, main cable replacement, switchgear change-out).
Quarterly maintenance windows — 2–3 days every quarter. We use these for staged work, circuit by circuit.
Weekend and night shifts — for the non-disruptive parts of the rewire (cable pulling in ceiling voids, surface trunking, equipment labelling).
Phased rewire — for a facility that cannot be fully shut down, we rewire section by section, keeping the rest of the facility live through temporary distribution.

We plan the shutdown with you in advance, give you a daily progress update during the shutdown, and stay until the production line is back online and tested.

Compliance (LEW Endorsement, CoC, EMA, MOM)

Industrial electrical work in Singapore sits at the intersection of several regulators:

EMA — the primary regulator for electrical safety. LEW endorsement and CoC required for any fixed-wiring modification.
MOM (Ministry of Manpower) — workplace safety, including electrical safety in factories. The Workplace Safety and Health Act applies to all industrial facilities.
SCDF (Singapore Civil Defence Force) — fire safety, including fire alarm interface and emergency lighting.
SP Services — the grid operator, for any 3-phase or higher-amp supply application.

We work to the requirements of all the above, with LEW endorsement on every meaningful job and a CoC issued for the relevant work scope. For the standalone LEW inspection (e.g. for a pre-sale or pre-handover condition), see our Electrical Inspection, Testing & Maintenance Singapore page.

Why Industrial Clients Choose TRUST ELECTRICIANS

Industrial experience — factory, warehouse, plant, and 3-phase work is what we do.
Licensed & LEW-endorsed — every meaningful job is signed off by a Licensed Electrical Worker registered with the EMA.
ACB / MCCB capability — switchgear work is a specialty.
Shutdown-aware — we plan around your production schedule, not ours.
Fixed, written quotes — transparent pricing for every project, itemised by scope.
EMA-approved parts only — Schneider, ABB, Siemens, Eaton, or equivalent.

Areas We Cover for Industrial Electrical Rewiring

Across all of Singapore, with no travel surcharge. We regularly attend industrial rewires in Jurong Industrial Estate, Loyang, Woodlands Industrial, Tanjong Penjuru, Kallang Basin, MacPherson, Tai Seng, Paya Lebar, Defu Lane, Eunos, Kaki Bukit, Bedok Reservoir, Tampines Industrial, Senoko, Tuas, Boon Lay, Clementi West, and Toh Guan.

FAQs

How long does an industrial rewire take?

Depends on size and scope. A small warehouse is typically 2–4 weeks. A mid-sized factory is 4–8 weeks. A large facility with ACB switchgear and 3-phase distribution is 8–16 weeks. The actual power-off time during the main DB swap is usually 4–8 hours; the rest is staged.

Do I need to shut down my production for the rewire?

For the main DB swap, typically yes — for 4–8 hours. For the rest of the rewire, we plan around your existing shutdown schedule (annual maintenance shutdown, quarterly windows, or staged work) to keep production loss to a minimum.

Can the rewire be done while the facility is operational?

Partially. Surface trunking, cable pulling in ceiling voids, and equipment labelling can be done live. Anything that requires a power outage (DB swap, main cable replacement, switchgear change-out) has to be done during a planned shutdown.

What does an industrial rewire cost in Singapore?

For a small warehouse, typical range is $25,000 – $80,000. For a mid-sized factory, typical range is $80,000 – $250,000. For a large facility with ACB switchgear, typical range is $250,000 – $800,000+ depending on scope. See our Electrical Services Price List for current rates.

Can you coordinate with my maintenance team?

Yes — daily progress updates, joint commissioning of new equipment, and handover documentation are all standard.

Do you handle the SP Services application for 3-phase upgrade?

Yes — see our 3-Phase Power Installation Singapore page for the broader 3-phase scope.

Planning an Industrial Rewire? Let's Start with a Site Survey.

If your facility is 20+ years old, has been through patchwork upgrades, is preparing for a sale or handover, or is hitting a regulatory issue — a full rewire is on the table. The first step is a confidential site survey, where we look at the actual condition of the installation and give you a fixed written quote and a shutdown plan.

Contact TRUST ELECTRICIANS Singapore, operated by AASHIKA NUR PTE. LTD., for fast, LEW-endorsed, and warranty-backed industrial electrical rewiring.

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