Water in Your Switchboard After a Storm: Why You Must Not Flip the Mains Back On

Should you turn the power back on if water has got into your switchboard? No. A wet switchboard needs to be inspected, dried and tested by an electrician before anything is re-energised. Flipping the main switch or resetting tripped breakers on a wet board risks electric shock, fire and destroying equipment that might otherwise have survived.

⚡ Quick Answers: wet switchboards

• My safety switches tripped during the storm. Can I reset them? Not until the board has been checked. They may have tripped precisely because water created a fault, and resetting puts power back into that fault.
• Is a wet switchboard dangerous to touch? Treat it that way. Water can bridge live parts to the metal enclosure and to you. Keep everyone away and call an electrician.
• Will it be fine once it dries out? Often not. Moisture leaves corrosion and residue inside breakers and safety switches that can cause failures weeks later, so the gear needs testing, not just time.
• Who do I call? An electrician for the board itself. If water is coming in on the meter or service side, that portion is Level 2 ASP work, and a network fault means calling Ausgrid on 13 13 88 or Endeavour Energy on 131 003.
• Does insurance cover it? Storm related water damage is commonly claimable. A make safe report from the attending electrician documents the cause and damage for your claim.

1. Why re-energising a wet board is the worst move

Switchboards are designed to keep live parts separated by air and insulation. Water bridges those gaps. Energising a wet board can push current across paths it was never meant to take, a process called tracking, which burns insulation and can start a fire inside the enclosure.

There is also the simpler danger: a wet metal enclosure or wet switch can put mains voltage on the surface you are about to touch. The tripped breakers annoy you, but they are doing their job. Leave them off.

2. How water gets into a switchboard

On older Sydney homes the usual entry points are perished door seals on outdoor boards, cracked or missing conduit glands where cables enter, holes left from old equipment, and rain driven sideways into ageing meter enclosures. Water also travels along cables themselves, following the conduit from a flooded trench or a leaking eave straight into the board.

Boards that predate modern standards often have no drip protection at all, which is one of several reasons an old switchboard is worth upgrading before storm season rather than after it.

3. What to do right now

Keep everyone away from the board. If the main switch is dry, clearly accessible and you can operate it without touching anything wet, switching it off is sensible. If the board is dripping, sizzling or you are unsure, do not touch it at all. Call an electrician, and for anything actively arcing or burning call 000 first.

Take photos from a safe distance for your insurer, and do not start mopping out the enclosure. Nothing inside a switchboard is user serviceable, wet or dry.

4. The inspect, dry, test, replace sequence

A proper response is methodical. The electrician isolates the board, opens it up and traces how far the water travelled. Everything is dried, then the parts that matter are tested rather than trusted: insulation resistance across the circuits, and a full trip test on every safety switch. Gear that fails, or that shows corrosion and water staining inside, gets replaced.

This is where shortcuts hurt. A safety switch that was submerged can click on and appear to work while its internals are corroding, then fail to trip the day you actually need it. Testing is the only way to know, which is the same reason we recommend a periodic electrical safety inspection for any home that has been through flooding.

5. When the meter or service side is involved

Everything up to your main switch, including the service line, point of attachment, service fuse and metering, sits on the network side of the installation. If water has entered through the meter enclosure or the consumer mains, repairs in that zone are Level 2 ASP work, and the network may need to disconnect supply before it can be touched. A fault on the network's own equipment is a call to your distributor, and you can check your network area in seconds with our postcode checker if you are not sure whether that is Ausgrid or Endeavour Energy.

Our guide to who is responsible for what after storm damage maps the boundary in plain English.

6. Getting ahead of the next storm

If your board took on water once, it will again. Weatherproof enclosures, new seals and glands, relocating an exposed board, or a full switchboard upgrade with modern safety switches are all permanent fixes. Sydney's storm season peaks over summer, so the quiet months are the time to act; our storm season guide explains what tends to fail first and why.

And if your safety switch trips every time it rains even without visible water in the board, that pattern has its own set of causes, covered in safety switch tripping after rain.

How High Demand Electrical helps

We attend wet and storm damaged switchboards across Sydney with a 24/7 emergency make safe service, carry out the testing and replacement work, and as Level 2 ASPs we can also repair the meter and service side in the same visit rather than leaving you waiting on a second contractor. We supply written make safe and damage reports for insurance claims, and we handle storm damage repairs end to end, from first call to reconnection.

Wet Switchboard FAQs (Sydney)

Will my safety switches still protect me after being wet?

Not necessarily. Moisture corrodes the mechanism and can stop a safety switch tripping when it should. Every safety switch in a water affected board should be trip tested, and any that were submerged should be replaced.

Can I just leave it a few days to dry out and then switch on?

No. Drying fixes the water but not what the water did. Residue and corrosion inside breakers, connections and safety switches remain, and only testing shows whether the gear is still safe.

Does home insurance cover a water damaged switchboard?

Storm driven water damage is commonly covered, though every policy differs. Insurers generally want an electrician's report establishing the cause and the damage, which is exactly what a make safe visit produces.

How long before the power is back on?

If the water was contained and the gear tests clean, sometimes the same day. If safety switches or the board itself need replacement, or the meter side is involved and the network must attend, allow longer. See what same day reconnection realistically looks like.

Wet board? Get it tested before you touch it

Book an emergency make safe or call 0402 559 777, 24/7. Every job starts with a site assessment so the scope and pricing are confirmed before any work begins.