ELECTRICAL EMERGENCY

HDB Electrical Emergency Guide

Power tripping? Circuit breaker won't reset? Get immediate safety guidance and licensed electrician help for your HDB flat.

6-minute read

Safety-first guidance

Last reviewed: 13 Oct 2026 · ContractorSG editorial team

What should I do when the power trips or there are sparks in my HDB flat?

If it is safe, switch off the main switch and unplug appliances, and call 995 if there is fire or smoke (SCDF). Reset a tripped breaker once only; if it trips again, engage a Licensed Electrical Worker (LEW), because EMA requires repairs to wiring, sockets and circuit breakers to be done by an LEW (EMA). If neighbours have lost power too, it is a supply issue: call SP Group on 1800 778 8888 (SP Group).

By the ContractorSG editorial team · Last reviewed: 13 Oct 2026 · ContractorSG editorial team · Sources

Who should I call for an electrical problem?

Situation	Call	Source
Fire, smoke or someone injured by electric shock	995 (SCDF)	SCDF
Your flat and neighbours / the block have lost power	SP Group 1800 778 8888	SP Group, EMA
Only your flat: breaker won't stay on, burning smell, faulty socket or RCCB	A Licensed Electrical Worker (check on EMA's ELISE portal)	EMA
Trapped in a lift during an outage	Lift alarm, then the Essential Maintenance Service Unit (EMSU) / Town Council	EMA

What are the first safety steps?

Switch Off Main Power

If you smell burning or see sparks, turn off main switch immediately.

Unplug All Appliances

Disconnect everything from power points in affected areas.

Check for Water

Never touch electrical points if there's water nearby.

Don't Attempt Repairs

Repairing wiring, sockets or breakers is Licensed Electrical Worker (LEW) work under EMA rules.

Call Licensed Electrician

Call a Licensed Electrical Worker. If neighbours are also affected, call SP Group (1800 778 8888) first.

Document the Issue

Note which areas affected, when it started, any unusual sounds/smells.

Is it an emergency, or can it wait until morning?

Call Emergency Electrician NOW

Burning smell from electrical points
Sparks or arcing from switches/outlets
Complete power loss in entire flat
Water near electrical installations
Circuit breaker trips repeatedly
Hot or buzzing electrical panels

⚠️ Fire or smoke: leave the flat and call 995. Whole block dark: call SP Group on 1800 778 8888.

Can Wait Until Business Hours

Single light not working
One power point not functioning
Fan making noise but still working
Light switch feels loose
Planning new power point installation
Upgrading electrical fittings

💰 Non-urgent jobs avoid after-hours surcharges

What are the common HDB electrical problems and fixes?

Circuit Breaker Keeps Tripping

Most Common

Likely Causes:

Overloaded circuits (too many appliances)
Faulty appliance causing short circuit
Ageing wiring in older flats
Water damage to electrical systems

Safe Troubleshooting:

1. Switch off all appliances
2. Reset circuit breaker ONCE
3. If it trips again, call electrician
4. Never force or repeatedly reset
5. Test one appliance at a time when power returns

Typical Cost (estimate): LEW electrician diagnosis $80-120, circuit breaker replacement $120-200, rewiring $200-500 per circuit.

Partial Power Loss (Kitchen/Bedroom Only)

Common in BTO

HDB-Specific Issues:

Separate circuits for kitchen & bedrooms
Aircon circuit may be independent
Bathroom circuits often isolated
Check distribution board for tripped switches

Quick Checks:

1. Check if neighbors affected (building issue)
2. Look for tripped breakers in panel
3. Test other rooms still have power
4. Check if specific appliances caused issue
5. Contact LEW electrician if no obvious cause

Common Fix: Often a tripped RCCB or MCB. If it won't stay on after one reset, an LEW needs to find the fault. Estimated cost: $80-150 for diagnosis.

Power Points/Switches Not Working

Usually Non-Emergency

Before Calling Electrician:

Test with different appliances
Check if other points in same room work
Check the socket's own on/off switch is on
Check distribution board for labels

Cost Expectations (estimates):

Faulty switch replacement$60-100

Power point repair$80-120

New power point installation$120-200

LEW certification fee$50-80

EMA rule: Installing, repairing or modifying wiring, adding or replacing power points, switches or lighting points, and repairing or replacing circuit breakers must be carried out or supervised by a Licensed Electrical Worker (EMA). Plugging a light fitting into an existing point does not need an LEW (EMA, 2025).

How much do electrical repairs cost? (ContractorSG estimates)

These are ContractorSG editorial estimates for planning only (last reviewed Oct 2026). They are not official rates or survey data, and prices vary by contractor. Always get a written quote, including any after-hours surcharge, before work starts.

Standard Hours (9am-6pm)

LEW electrician callout$80-120

Circuit breaker reset$60-100

Power point repair$80-150

Light fixture replacement$100-180

Typical Service Call$120-200

✅ Best value, plan non-urgent repairs

Evening (6pm-10pm)

Emergency callout$120-180

Circuit diagnostics$100-140

Power restoration$150-250

Evening Emergency$200-300

⚠️ Higher rates but available when needed

Late Night/Weekend

After-hours call-out$180-300

Critical safety issue$200-400

Maximum Emergency$300-500

🚨 Only for genuine safety emergencies

When do I need a Licensed Electrical Worker (LEW)?

Why LEW Certification Matters

Required by EMA: electrical works at your premises must be carried out by an LEW
Inspection: the LEW inspects and certifies the installation is safe before supply is turned on
Right class of licence: an HDB flat needs a Licensed Electrician; larger installations need a technician or engineer

Risks of Unlicensed Work

It's an offence: under section 82 of the Electricity Act, electrical work must be done by, or under the supervision of, a licensed electrical worker, and owners must not knowingly engage an unlicensed person. Only replacing your own lamps and household fuses is exempt (Electricity Act)
Insurance: check your home insurance policy wording on unlicensed work
Safety Risk: Electrocution and fire hazards
Legal Liability: Personal liability for damages
Rework: you may have to pay an LEW to redo and certify it

How to Verify LEW Certification

Before Hiring:

• Ask for the LEW's name and licence number
• Check it on EMA's ELISE portal
• Look at the licence card (photo, name, licence number)
• Get a written quote before work starts

After Work Completion:

• Ask the LEW to confirm the work was inspected and tested
• Get an itemised invoice naming the LEW
• Keep invoices and any test records
• Test all electrical points before payment

Find electricians listed on ContractorSG

ContractorSG is a directory: we do not rank, endorse or guarantee any contractor. Compare a few listings, ask for a written quote, and check the electrician's LEW licence on EMA's ELISE portal before any work starts.

Electricians in Singapore →Browse all listings How to check a licence

When You Call, Have Ready:

Essential Information:

• Your HDB address and unit number
• Description of electrical problem
• Which areas of flat affected
• Any safety concerns (burning smell, sparks)

Ask About:

• The LEW's name and licence number
• Total cost estimate including surcharges
• Response time and availability
• Warranty on electrical work performed

How do I prevent electrical problems at home?

Daily Safety Habits

Don't overload power points with extension cords
Switch off appliances when not in use
Check for loose plugs and sockets
Keep electrical points dry and clean
Report unusual sounds or smells immediately

Monthly Checks

Test the RCCB (safety switch) in your distribution board using its test button
Check for warm switches or power points
Inspect visible electrical cables for damage
Keep the distribution board area dry and unobstructed
Schedule LEW inspection if any concerns

Safety Tip

If your RCCB doesn't trip when you press its test button, or it trips often without an obvious cause, EMA advises engaging an LEW. Older flats that trip frequently may also need the distribution board assessed by an LEW.

Need an Emergency Electrician Right Now?

Browse electricians listed on ContractorSG and check their LEW licence before they start work.

Electricians offering emergency service →Electrical services guide

Frequently asked questions

What should I do if my HDB circuit breaker keeps tripping?

First, switch off all appliances and unplug devices in the affected area. Try to reset the circuit breaker once. If it trips again immediately, DO NOT keep trying - this indicates a serious fault. Contact a Licensed Electrical Worker (LEW). EMA requires repairs or replacement of circuit breakers and other electrical installation work to be done by an LEW. If the whole block or neighbours have also lost power, call SP Group on 1800 778 8888.

When is an electrical problem considered an emergency in HDB flats?

Treat it as urgent if there is a burning smell, sparks from outlets, water near electrical points, hot or buzzing panels, or a breaker that trips repeatedly. Switch off at the main switch if it is safe to do so. Call 995 if there is fire or smoke. If your neighbours have also lost power, it is likely a supply issue: call SP Group on 1800 778 8888.

Can I fix electrical issues myself in my HDB flat?

Only very simple tasks. EMA says electrical work such as wiring, adding or moving power points, switches or lighting points, and repairing or replacing circuit breakers must be carried out or supervised by a Licensed Electrical Worker (LEW). Connecting an appliance such as a light fitting to an existing electrical point does not need an LEW. Resetting a tripped breaker once is fine; repairing it is LEW work.

How much does emergency electrical repair cost in Singapore?

ContractorSG estimates (not official figures, Oct 2026): a daytime LEW call-out is roughly $80-120 and after-hours call-outs often cost more. EMA estimates installing an RCCB in an HDB flat at about $500. Always ask for a written quote including any after-hours surcharge before work starts.

Source: Energy Market Authority (EMA) — FAQ: What should I do if my RCCB or ELCB is faulty?

Is an RCCB compulsory in an HDB flat?

Yes. EMA requires all homes to have an RCCB or ELCB rated at no more than 30mA, and homeowners without one may be fined up to $5,000 from 1 July 2025. HDB flats built before 1985 did not come with one unless the owner added it. EMA advises testing your RCCB once a month.

Source: Energy Market Authority (EMA) — Electrical Safety

Sources

Rules and figures in this guide are checked against these sources. Prices marked as estimates are ContractorSG editorial estimates, not official figures — always get written quotes.

Electrical Safety — Energy Market Authority (EMA)EMA requires electrical works at consumers’ premises (rewiring, alteration, repair or replacement of the installation) to be carried out by Licensed Electrical Workers (LEWs). All homes must have an RCCB/ELCB (30mA); homeowners without one may be fined up to $5,000 from 1 July 2025. HDB flats built before 1985 did not come with one installed. EMA advises testing the RCCB monthly.Checked 13 Oct 2026
Engaging Licensed Electrical Workers — Energy Market Authority (EMA)LEW needed for wiring, adding/replacing power points, switches and lighting points, and repairing/replacing circuit breakers; verify licences on the ELISE portal or the LEW’s licence card.Checked 13 Oct 2026
5 Common Electrical Safety Questions: EMA’s Inspectorate Department Explains (2025) — Energy Market Authority (EMA)Connecting an appliance such as a light fitting to an existing electrical point does not need an LEW; shifting or extending a point does.Checked 13 Oct 2026
FAQ: What should I do if my RCCB or ELCB is faulty? — Energy Market Authority (EMA)Engage an LEW to repair/replace a faulty RCCB/ELCB; installing an RCCB in an HDB flat is estimated at about $500.Checked 13 Oct 2026
Power Outage Readiness: Individuals — Energy Market Authority (EMA)Check whether neighbours are also affected; SP Group Electricity Service Centre hotline 1800 778 8888; call 995/999 only for life-threatening emergencies.Checked 13 Oct 2026
Contact Us — Electricity Service Centre (24-hour) — SP GroupElectricity supply interruption hotline: 1800 778 8888.Checked 13 Oct 2026
Electricity Act 2001, section 82 (licensing of electrical workers) — Singapore Statutes Online (AGC)Electrical work may only be done by, or under the supervision of, a licensed electrical worker; owners must not knowingly engage an unlicensed person. Replacing your own lamps and household fuses is exempt.Checked 13 Oct 2026
Renovation Guidelines for Electrical Works — Housing & Development Board (HDB)All wiring by an EMA-licensed electrical worker. Flats with a 30A main switch need an HDB permit for new 15A points/20A isolators; flats with a 40A main switch (or upgraded under MUP/HIP) do not. Extra lighting/power points and rewiring need no permit but new wiring must be tested by SP Services. No power points in bathrooms (SS 638 wet area). PVC wiring life span averages about 25 years.Checked 13 Oct 2026
Emergency Medical Services — Singapore Civil Defence Force (SCDF)Call 995 only for emergencies (fire, rescue, life-threatening medical cases). SCDF will cease the 1777 non-emergency ambulance hotline from 1 January 2027.Checked 13 Oct 2026