Certificates of Electrical Safety explained

A Certificate of Electrical Safety, or COES, is a legal document. It's the record a registered electrical contractor or licensed electrician issues to set out the details of the electrical work they performed.

It isn't only for big jobs. A licensed electrician must provide one whenever they complete any electrical installation work, which the Electricity Safety Act defines as installation, alteration, repair or maintenance. A new cooktop circuit gets one. So does replacing a damaged power point.

It also has limits. It describes that job and nothing more. It won't tell you whether the rest of the wiring in a post-war Altona weatherboard is sound; that takes a separate safety check with its own report.

There are two kinds of certificate. Non-prescribed certificates cover work within your installation, such as lights, power points, air conditioning and a hot water service. Most jobs inside the house land here.

Prescribed certificates are for the major wiring. In a home, Energy Safe Victoria says that generally means wiring and equipment where the electricity can't be switched off, usually the wires up to the switchboard, and possibly the wiring from the street and the meter. Its examples include consumer mains, the main switchboard, meter box and main earthing system, motor generators, solar PV and battery storage.

There's a narrow exception. Under regulation 249(4), repairing or replacing a single component part of prescribed work can sit outside the prescribed certificate and inspection requirement. Your electrician should explain which applies before starting.

Prescribed work has an extra step: a Licensed Electrical Inspector has to inspect it. It can't be turned on, or left on, until that happens, and Energy Safe Victoria says the inspection should be completed within 8 business days of the work being finished.

On a switchboard job that matters. Power can't go back onto a new main switchboard until the inspector has inspected the work, so the inspection belongs in the job plan, not in the paperwork afterwards. Ask how it's being arranged and what it means for the day your power is off.

In Melbourne's west it tends to come up in two ways: an old board coming out of a post-war brick veneer in Laverton or Altona, or solar or a battery going onto a newer home in Point Cook, Tarneit or Truganina. Both carry the inspection step.

For non-prescribed work, Energy Safe Victoria tells consumers the contractor or electrician must give them a copy within 30 days. The Electricity Safety Act sets the deadline at one month after the certificate of compliance for the work is completed.

Prescribed work runs on a different clock because the inspection comes first. The Act sets it at 4 business days after the inspector's certificate of inspection is given, and Energy Safe Victoria's industry guidance says copies must reach the relevant parties within 16 calendar days of the work being completed.

A split system's electrical connection is non-prescribed, so the 30-day copy applies. The refrigerant side needs its own licence, and gas has separate paperwork: after servicing, a licensed gasfitter must provide a compliance certificate in certain cases, such as when the gas piping is modified.

Give the certificate two minutes when it arrives. Check the address, the date and the contractor. In Victoria an electrician must work for a registered electrical contractor to do work for a customer, and that contractor must show its REC number on its advertising, so you can compare the two.

Then read the description. It should say plainly what was done: a new oven circuit, three kitchen power points, the main switchboard replaced. A line that just says ‘electrical work’ tells the next electrician very little, so ask for detail. A switchboard replacement should come with a prescribed certificate.

Landlords, note one distinction. Rental providers on a new agreement after 29 March 2021 must have all electrical installations and fittings checked by a licensed electrician at least once every 2 years. Energy Safe Victoria says a COES is not the correct form for recording that check, but one must be issued if repair or maintenance work is carried out.

Kept together, certificates become a history of the installation. When you renovate, add an EV charger or replace the old board, the next electrician can see what changed and when, instead of tracing it behind the plaster. When you sell, they help answer a buyer's questions about recent work.

Energy Safe Victoria also audits work. Its auditors may make an appointment to view and test the installation work as described on a COES. The audit is free and you can refuse it at any time.

Some properties have a more direct need. If your supply comes in on a private aerial line, meaning low-voltage poles and wires on your land that form part of your installation, the distribution company will only reconnect power to it once a licensed electrician or REC has issued a COES.

Start by asking; it may have gone to an old email address or the junk folder. But know where you stand. Energy Safe Victoria says a registered contractor or licensed electrical worker cannot refuse to issue a COES for any reason, including payment issues or contract disputes.

If the contractor still won't provide it, or won't arrange the inspection for prescribed work, and you were the customer, you can report it to Energy Safe. It deals with safety and technical compliance, not billing, quality-of-work or contract disputes, which are better taken to Consumer Affairs Victoria or VCAT.

Better still, settle it before work starts. Energy Safe Victoria says you must engage a registered electrical contractor for electrical installation work, and recommends asking to see a tradesperson's licence, as it shows they're qualified and gives you avenues for recourse. Unlicensed electrical work is illegal in Victoria, even small jobs like changing a light switch.

If you're planning work that needs a certificate, the useful conversation happens at the quote. We'll tell you whether the job is prescribed, how the inspection fits into a switchboard or mains job, and how the certificate will reach you. Total Comfort is a licensed electrical contractor (REC 38187), and our electrical installation work finishes with a COES, as the law requires.

We can also help when the paper trail has gone cold. If you've bought an older cottage in Williamstown or Yarraville with nothing on file, an electrical safety check gives you a written picture of where things stand, and any repairs we then carry out come with their own certificate.

Quotes are free and no-obligation, you get the price before we start, and you'll get honest advice about whether the work is needed at all. If your question is about a certificate another contractor issued, start with them. If it's about the work itself, we're glad to take a look.