No Power / Power Failure Electrician Singapore

When the entire home goes dark — or one half of the HDB flat loses supply while the other half is fine — you are dealing with a power failure, not a simple power trip. Different problem, different fix.

At TRUST ELECTRICIANS, we respond to power failures and blackouts across Singapore every week. Most are resolved within 1–3 hours on site, but only if the diagnosis starts in the right place. The very first question is: is this an SP Services supply problem, or is it your own electrical installation?

✅ BCA Registered ✅ LEW-Certified Electrical Contractor ✅ EMA-Compliant ✅ HDB Electrical Loading Specialists ✅ 24/7 Islandwide Response ✅ Licensed Local Team

How to Tell: SP Services Fault or Your Internal Wiring?

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This is the single most important question, and it saves most homeowners both time and money.

Check	SP Services Supply Problem	Your Internal Wiring Problem
Neighbours’ lights	Also off / also flickering	All normal
HDB lift lobby	Lights off	Lights on
Your corridor / street block	Block dark	Block lit normally
Your main switch (big 40A/60A/80A)	Cannot be turned back on, or trips immediately	Trips because of an internal overload, but a partial reset holds for a while
Time of failure	Often affects many units at once, sometimes after a storm or SP maintenance notice	Just your unit, no pattern with weather or SP works

Quick test: Step out to the corridor. Are your neighbours’ lights on? If yes, the problem is inside your unit and we can fix it. If no, call SP Services at 1800-778-8888 first — no electrician can fix an SP network fault, and there is no point paying a call-out fee for a network-side issue.

If your neighbours have power and you do not, read on — the fault is almost certainly inside your home, and we can almost always get you back online the same day.

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Partial vs Total Power Loss

The two failure patterns need very different fixes:

Partial Power Loss — half the home dead

Common in HDB flats with split DB boxes (lighting on one side, power sockets on the other).
Usually one RCCB or a group of MCBs has tripped, not the whole board.
Often caused by one faulty appliance (water heater element, kitchen oven) on a heavily loaded circuit.
Typical fix time: 1–2 hours.

Total Power Loss — entire home dark

The main switch has tripped or the incoming supply to your unit has failed.
For HDB flats, this is most often an HDB electrical loading trip — your cumulative usage (multiple aircons, water heater, dryer, oven on at once) has exceeded the SP-approved loading for your flat.
For landed / condo, it can be the main breaker, the landlord’s meter, or a distribution issue upstream.
Typical fix time: 1–4 hours, including HDB electrical loading check.

If you have a single-circuit issue (one room dead, others fine) rather than the whole home going dark, see our Power Trip Electrician Singapore page — that covers the breaker-trip symptom side of the same problem.

HDB Electrical Loading Trip – Causes & Solutions

This is the single most common reason an HDB flat loses all power in Singapore.

What is HDB electrical loading?

Every HDB flat is approved for a maximum electrical load by SP Services. Common limits:

3-room HDB: 40A (≈ 8.8 kVA)
4-room HDB: 40A or 60A depending on year
5-room / Executive / EA HDB: 60A (≈ 13.2 kVA)
Newer BTO: often 60A or 80A

When your flat was built, those limits were more than enough. Today, with multiple air-conditioning units, instant water heaters, dryers, induction cookers, and home EV chargers, the same flat can easily exceed its original limit — especially in the evening peak.

How we fix an HDB electrical loading trip

Measure actual peak load with a clamp meter across the main incoming cables.
Identify the highest-draw circuits (almost always aircon, water heater, kitchen).
Stagger loads — a practical fix that costs nothing: avoid running 2 aircons + water heater + dryer on the same circuit simultaneously.
SP Services loading upgrade application — if your usage is genuinely beyond the approved limit, we help you apply to SP Services for a higher-amp main breaker. This is paperwork + a small SP fee, plus our electrician’s time to swap the main breaker once approved.
HDB electrical loading check + CoC — for some HDB sub-sales or renovation handovers, HDB requires a loading check to confirm the installation is safe at its current draw.

Warning signs your HDB electrical loading is the problem

Main switch trips only between 7 pm and 11 pm (peak load window).
You added an aircon or water heater in the last 6–12 months and the tripping started soon after.
Neighbours in older HDB blocks are reporting similar issues.
You can clearly see the main breaker is much warmer than usual after a long day.

If any of the above sound familiar, an HDB electrical loading check is the right next step. We do this as a standalone visit (no fix yet) and give you a written report.

What to Do Before the Electrician Arrives

A few safe steps you can take right now:

Check the corridor / lift lobby — confirms whether the fault is yours or SP Services’.
Switch off all individual MCBs in your DB box — leave the main switch ON.
Switch off all high-draw appliances at the plug — aircon, water heater, oven, dryer.
Try to reset the main switch once only. If it holds but individual MCBs still trip, leave them off and call us.
Do NOT keep resetting the main switch if it trips immediately. There is an active fault that needs proper test equipment.
For partial loss (one room dead), check for a tripped RCCB / ELCB (the wider switch with the test button) — but if it will not stay up, leave it off.
Take a photo of your DB box before we arrive — it speeds up the diagnosis over the phone.

If you smell burning, see smoke, see sparking, or the trip is paired with water ingress — treat it as a true emergency and see our 24/7 Emergency Electrician Singapore page.

Our Emergency Response

For genuine power failures across Singapore, our standard response is:

Islandwide: 30–90 minutes during working hours, 60–120 minutes after hours.
Phone triage first: we will tell you over the phone whether it is likely an SP fault, a loading issue, or an internal wiring fault — and whether it is safe to wait until the morning.
EMA-licensed, LEW-supported work: if the job requires a Licensed Electrical Worker endorsement (main breaker replacement, DB upgrade, full-circuit rewiring), we arrange that as part of the same visit.
Certificate of Compliance (CoC) issued where the work scope requires one — for HDB electrical loading upgrades, HDB resale handovers, or any fixed-wiring modification.

What we will not do: we will not reset your main switch, take a call-out fee, and leave. If the breaker trips again within 24 hours of our visit, we come back free of charge.

Areas We Cover for Power Failure Calls

Islandwide Singapore, no travel surcharge. We regularly attend electrical repair calls in Tampines, Bedok, Sengkang, Punggol, Yishun, Woodlands, Jurong West, Jurong East, Bukit Batok, Toa Payoh, Ang Mo Kio, Hougang, Serangoon, Bishan, Clementi, Queenstown, Choa Chu Kang, Bukit Panjang, Pasir Ris, Kallang, Geylang, Marine Parade, Bukit Merah, Bukit Timah, Holland Village, and the East Coast. For landed properties and private estates, we have the same islandwide footprint and response times.

Why Singapore Homeowners Trust Us for Power Failure

Licensed & LEW-endorsed team — every meaningful job is signed off by a Licensed Electrical Worker registered with the EMA.
SP Services paperwork support — if your HDB electrical loading genuinely needs a higher-amp main, we help you prepare the SP application and handle the swap after approval.
Fixed, transparent pricing — written quote before any work begins. See our Electrical Services Price List for full rates.
Tidy, polite, on-time — drop sheets, shoe covers, and a clean site are the default.
Same-day resolution in 90% of cases — most power failures are diagnosed and fixed in a single visit.

FAQs

What is the difference between a "power trip" and a "power failure"?

A power trip is when a single circuit breaker (MCB or RCCB) cuts supply because of a fault on that circuit — usually one room or one area loses power. A power failure is when the main switch trips or the entire home loses supply. See Power Trip Electrician Singapore for the single-circuit version of this problem.

Who do I call first — SP Services or an electrician?

Always check the corridor first. If your neighbours’ lights are also off, call SP Services at 1800-778-8888 — no electrician can fix an SP network fault. If your neighbours have power, call us directly.

How long does an HDB electrical loading upgrade take?

The full process is: site survey + load measurement → SP application (we help you prepare) → SP approval (typically 2–4 weeks) → main breaker swap (1–2 hours on site) → CoC issuance. The on-site swap itself is quick; the bottleneck is SP’s processing time.

Can I just install a higher-amp main breaker without SP approval?

No. In Singapore, the main breaker rating is part of your approved electrical installation. Replacing it with a higher rating without SP’s written approval is unsafe, violates the Electricity Act, and will almost certainly fail any future HDB resale or insurance claim. We will always insist on the proper SP route.

Need help with a power failure right now?

Call or WhatsApp us — we will tell you within 2 minutes whether to call SP or wait for us.

Get in Touch

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30 ROBERTS LANE SINGAPORE (218309)

Email Address

sales@trustelectricians.com