Licensed Electrical Worker (LEW) & EMA
LEW Services & EMA Electrical Licensing in Singapore
Two in-house Grade 8 LEWs for endorsements, EMA licences, inspection and testing.
What our LEW & EMA services cover
EMA installation licence
Applied for and renewed yearly, our LEW named.
LEW endorsement & take-over
We inspect, rectify and endorse.
Single-line diagram (SLD)
Prepared and endorsed for approval.
Periodic inspection & testing
Statutory, to SS 638, certified.
Testing & commissioning
Injection and relay testing, documented.
Load increase & A&A approvals
When supply or use changes.
Our work
Photographs from BSH installations — not stock images.
Get a price before you call
An indicative price in minutes, free.
How an LEW engagement works
- 1Scope & documentsInstallation, drawings and approvals reviewed.
- 2Inspection & testingAgainst SS 638 and EMA requirements.
- 3Rectify & endorseDefects fixed; installation and SLD endorsed.
- 4Submit & certifyEMA submission, licence and certificate.
Trusted on high-compliance installations
From switchboard changeouts to island-wide CCTV. Above our LEWs’ limits, we engage an independent Electrical Engineer as project LEW.
Frequently asked questions
What is a Licensed Electrical Worker (LEW) and when do I legally need one?
Under Singapore's Electricity Act, electrical installations above a set load must be operated under a Licensed Electrical Worker who takes legal responsibility for their safety. Most non-domestic premises and larger installations therefore need a named LEW. BSH provides Grade 8 LEWs who can be appointed as your responsible worker.
How do I apply for an EMA electrical installation licence?
The EMA electrical installation licence is applied for via EMA with a Licensed Electrical Worker named as responsible for the installation. BSH handles the full process — inspection, documentation, SLD endorsement and submission — and renews the licence for you each year.
My building or unit changed hands — can BSH take over the electrical installation?
Yes. We can take over an existing installation as your appointed LEW. We inspect and test it, rectify any defects, then endorse the installation and update the EMA licence to reflect the new responsible worker.
What load can your LEWs approve?
Our own EMA-licensed Electrical Technicians (Grade 8 LEWs) design installations up to 150 kVA, and install, test and maintain installations up to 500 kVA. Above their limits we engage an independent Electrical Engineer as project LEW, so bigger jobs are covered too.
Do you provide periodic inspection and testing?
Yes. We carry out statutory periodic inspection and testing to SS 638, including protection and injection testing, and issue the required certification.
How do I renew my EMA electrical installation licence in Singapore?
An EMA electrical installation licence is renewed periodically (typically each year) with a Licensed Electrical Worker named as the responsible worker. For clients we look after, BSH manages the entire renewal — periodic inspection, any rectification, LEW re-endorsement and the EMA submission — so your licence never lapses.
Can BSH provide LEW certification for my electrical installation?
Yes. Our Grade 8 Licensed Electrical Worker inspects and tests your installation to SS 638 and EMA requirements, then issues the LEW endorsement and certification it needs to be operated legally — whether it is a new installation, a take-over, or a licence renewal.