Who is actually allowed to run data cable in your office

Most people assume that anyone who can pull a cable through a wall can install data cabling. In Australia that is not how it works, and the rule is stricter than almost anyone outside the trade realises.

Before someone installs, connects, maintains or repairs cabling in a home or a business, they have to be a registered cabler. Not qualified in a general sense. Registered, in a specific category, for that specific kind of work.

This matters most on commercial jobs, because one of the registration categories is not permitted to do the thing an office fit-out actually needs.

Registration is a separate thing to an electrical licence

An electrical licence covers electrical work. Cabling registration covers telecommunications cabling. They are issued under different systems and holding one does not give you the other.

So an electrician who is not a registered cabler is not permitted to run your data. And a registered cabler who is not a licensed electrician is not permitted to touch your power. Plenty of people hold both. The point is that you cannot assume it from a single licence number on the side of a van.

There are three categories, and the difference is not cosmetic

Open is the broad one. It covers homes, businesses and commercial buildings, including work that terminates at a main distribution frame, and with the right competencies added it covers structured cabling, optical fibre, coaxial, underground and aerial.

Restricted is the narrower one. It is intended for domestic and small business premises where the cabling finishes at a socket or a network termination device.

Lift is exactly what it sounds like, and covers cabling in lifts and lift wells.

The part that catches offices out

A Restricted registration must not be used for cabling work that connects to or terminates at a main distribution frame, or that connects a device to a patch panel.

Read that again if you are fitting out an office, because a patch panel in a comms cabinet is the normal way an office is cabled. It is how twenty desks get back to one place so the network can be managed.

Which means a Restricted cabler legally cannot complete a standard office fit-out. Not "should not". Is not permitted to. If someone has quoted your fit-out and holds Restricted registration, the job as drawn is outside what they are allowed to do.

You are entitled to a piece of paper at the end

This is the part that almost nobody asks for, and it is free.

After finishing cabling work, a registered cabler has to prepare a written statement certifying the work complies with the wiring rules. They give a copy to the customer who commissioned the work and keep one themselves for at least twelve months.

That statement has to identify the work done, name the cabler, give their contact details and their registration number, say whether they performed or supervised the work, and state that it complies with AS/CA S009:2020, the installation requirements for customer cabling.

It can come on the approved form, which is the TCA1, or in the cabler's own format such as an attachment to the invoice. The format is flexible. Receiving one is not optional.

If you have had data cabling done and never received anything like that, it is worth asking for it. It costs nothing, and it is the single quickest way to find out whether the person who did the work was registered to do it.

Four questions worth asking before anyone starts

• Are you a registered cabler, and which category? For an office with a patch panel, the answer needs to be Open.
• Will the cabling be tested, and will I see the results? A run that looks fine can still fail on length or crosstalk, and you want that found before the ceiling closes.
• Where is the cabinet going, and is there power and ventilation at it? This is the decision people make last and regret first.
• Will I get the compliance statement when the job is done? You should, without asking. Asking anyway tells you a lot.

Why we are bothering to tell you this

Because it is the sort of thing that only ever comes up after something has gone wrong, usually when a building manager or an insurer asks for paperwork that was never issued.

We do data cabling across Melbourne's inner north, both in houses and in commercial fit-outs, and we would rather you knew what to ask for. If the answers you get from someone else are better than ours, use them.

Registration categories, the restriction on patch panels and main distribution frames, and the compliance statement requirement are set out by the Australian Communications and Media Authority under the cabling provider rules.