The Thunderman Journal

Field notes from a Greater Melbourne sparky.

Straight answers on electrical safety, air conditioning, solar, compliance and seasonal upkeep — written for Victorian homes and businesses. Citation-only. en-AU. No prices.

Open domestic switchboard showing circuit breakers, RCD safety switches, and labelled wiring inside a metal enclosure

safety27 July 2026

Switchboard upgrade: when an old board becomes a fire risk

Ceramic fuses and no safety switch are the two clearest signs a Melbourne switchboard needs replacing. Here's how to tell if yours is overdue.

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An open residential switchboard showing circuit breakers and safety switches

compliance23 July 2026

Airbnb and short-stay: does the two-yearly electrical check apply?

Short-stay and holiday lets are exempt from Victoria's two-yearly rental electrical check — they fall outside residential tenancy law. Here's the line — and why exempt doesn't mean not worth doing.

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An open residential switchboard being tested during a periodic electrical safety check

compliance23 July 2026

What is on an electrical safety check report, and why it matters

The electrical safety check report — not the visit — is what protects you later. Here's what the record must legally contain, how it differs from a CoES, and what a thorough one adds.

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compliance23 July 2026

When your rentals need checking, and why to plan it now

From 13 October 2026, every Victorian rental needs a two-yearly electrical check — including existing tenancies. For a portfolio it's a scheduling job, not a scramble. Here's how to plan it early.

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An older residential switchboard being assessed by a licensed electrician for an upgrade

safety22 July 2026

Do I need to upgrade my switchboard? The warning signs

Not sure if your switchboard needs upgrading? Here are the signs that say yes — ceramic fuses, no safety switches, tripping, and adding big loads — and how to know for certain.

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A switchboard panel open on a wall showing circuit breakers and wiring

compliance22 July 2026

Emergency lighting every six months: is that really the law?

The six-month rule for emergency lighting tests comes from your building permit and AS 2293, not a blanket statute. Here is what Victorian building owners actually need to know.

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A licensed electrician inspecting the wiring at a residential switchboard during a rewire assessment

safety22 July 2026

How often should a house be rewired? A Melbourne guide

There's no fixed legal interval for rewiring a house — it's about condition, not age alone. Here's what wears out, the warning signs, and when a Melbourne home needs attention.

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A residential switchboard with RCD safety switches, the test buttons visible on each device

safety22 July 2026

Why your safety switch keeps tripping — and what to do

Your safety switch keeps tripping because it's found a fault and cut the power to protect you. Here's how to narrow down the cause safely, and when to call a licensed electrician.

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A licensed electrician's hands testing a residential switchboard before lodging a Certificate of Electrical Safety

compliance22 July 2026

What is a Certificate of Electrical Safety in Victoria?

A Certificate of Electrical Safety is the document a licensed electrician lodges after prescribed electrical work in Victoria. Here's what it covers, when you need one, and why it matters.

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A licensed electrician testing a residential switchboard, where a loose connection can cause flickering lights

safety22 July 2026

Why do my lights flicker? Harmless, or a warning

Flickering lights range from a mismatched LED dimmer to a loose connection that's a genuine fire risk. Here's how to tell which one you've got, and when to call a licensed electrician.

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Close-up of an open residential switchboard showing circuit breakers and safety switches

compliance20 July 2026

Test and tag for rental properties: legal requirement, or myth?

Landlords in Victoria are not legally required to test and tag appliances in residential rentals. Here's what the regulations actually say, and what you should do instead.

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Close-up of a domestic switchboard showing circuit breakers and safety switch labels

compliance17 July 2026

The two-yearly electrical safety check for Victorian rentals

From 13 October 2026, all Victorian rental properties must have an electrical safety check every two years. Here's what the check covers, who can do it, and what landlords must keep.

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Electrician inspecting a switchboard with safety equipment in a Melbourne home

safety15 July 2026

ESV charges crane company after powerline contact seriously injures worker

Energy Safe Victoria has charged a crane company after a worker was seriously injured by powerline contact. Here's what it means for anyone working near powerlines in Melbourne.

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Licensed electrician inspecting a home battery storage system and switchboard

safety25 June 2026

Home battery fire safety: what Victoria's ESV warning means for your system

After Energy Safe Victoria's home-battery fire warning, what Melbourne homeowners with a solar battery should check — and when to call a sparky.

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Outdoor split system condenser being installed on the wall of a Greenvale home

cooling1 June 2026

Why two aircon quotes for the same house are not the same job

The six things that move a split-system aircon install quote in Melbourne — sizing, brand, electrical scope, condensate and commissioning.

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Yiannis testing at a Melbourne switchboard, meter and circuit breakers exposed

how to1 June 2026

EV charger install — six factors that change the cost in Victoria

What moves the cost of a home EV charger install in Victoria — wallbox size, phase, switchboard headroom, cable distance and load management.

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Close-up of a residential switchboard showing labelled RCBO and MCB devices on a modern DIN-rail enclosure

how to1 June 2026

RCD, RCBO and MCB — what each safety device actually does in your switchboard

Plain-English guide to RCD, RCBO and MCB devices on an Australian switchboard — what each protects against and when AS/NZS 3000 requires it.

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how to1 June 2026

What drives the cost of smart-home wiring in a Melbourne home

Six factors that move a Melbourne smart-home wiring quote — Cat6 backbone, protocol choice, new-build vs retrofit, lighting zones and sub-board.

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Solar panel array installed on a Melbourne residential roof, with a battery storage unit visible inside the garage

compliance1 June 2026

What drives the cost of a solar-and-battery retrofit in Victoria

Six factors that move a Victorian solar + battery retrofit quote — array size, battery capacity, inverter, roof type and distributor approvals.

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Switchboard upgrade in progress — old ceramic-fuse board being replaced with a modern RCBO-protected enclosure

compliance1 June 2026

What drives the cost of a switchboard upgrade in Melbourne

Six factors that move a Melbourne switchboard upgrade quote — RCBO count, cable runs, board size, single vs three-phase and meter access.

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Three-phase consumer mains arriving at a Melbourne residential switchboard, with the meter equipment visible above

compliance1 June 2026

What drives the cost of a three-phase power upgrade in Melbourne

Six factors that move a Melbourne three-phase upgrade quote — whether it's needed, distributor scope, pole-to-board distance and rebuild.

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Split system air conditioner indoor unit on a Melbourne living-room wall

cooling26 May 2026

How to size a split system air conditioner for a Melbourne home

A licensed Melbourne sparky on kilowatts per square metre, what our climate changes, and the sizing mistakes that leave families sweating.

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compliance26 May 2026

EV charger installation in Victoria: what's legal, what's smart

The Victorian rules for home EV chargers — 7 kW vs 22 kW, switchboard questions, certification, and what to ask before you book.

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Modern residential switchboard with safety switches and circuit breakers in a Melbourne home

safety26 May 2026

Storm-season safety switches: what every Victorian home should check

Before Melbourne's first big summer storm, a sparky's 10-minute safety-switch check that catches the faults most homes ignore.

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