The industrial estates around St Marys and Penrith are filling up fast. Dunheved, the St Marys industrial precinct, Erskine Park, Kemps Creek and the new logistics parks near the Western Sydney Airport are attracting warehouses, food manufacturers, transport depots and light industrial workshops, and every one of them needs a network that will not fall over when a forklift bumps a wall. This guide explains how structured cabling and optic fibre should be planned for an industrial site, what to specify, and the mistakes we see most often when we are called in to fix someone else’s install.
Why industrial sites are different
An office fit-out is mostly about desks and meeting rooms. An industrial site has long distances, high ceilings, electrical noise from motors and welders, dust, temperature swings, and machines that move. Cabling that works in a Parramatta office will fail in a Dunheved workshop within a year if it is not specified and installed for the environment.
Copper where it makes sense, fibre where it does not
Structured copper cabling (Cat6 and Cat6A)
Copper is still right for desks, wireless access points, IP phones, printers and cameras within 90 metres of a rack. On an industrial site we recommend Cat6A as the default: it supports 10 Gbps, handles Power over Ethernet for cameras and access points without heat problems, and costs only slightly more than Cat6. Shielded (F/UTP) cable is worth specifying near motors, variable speed drives and welding bays where electrical noise is high.
Optic fibre backbone
Anything over 90 metres, anything between buildings, and anything that needs to be immune to electrical interference should run on optic fibre. A typical St Marys site has an office at the front, a warehouse behind it and perhaps a second shed or a gatehouse. Linking those with fibre, rather than stretching copper past its limit, is the single biggest reliability improvement we make on most jobs.
- Multi-mode OM4 for runs inside a building or between adjacent buildings up to a few hundred metres.
- Single-mode OS2 for longer runs, future 40 or 100 Gbps upgrades, or links across a large site.
- Always install spare cores. Pulling 12-core fibre when you need 4 costs almost nothing extra and saves a second trench later.
A cabling plan for a typical warehouse
- Main comms room in the office: core switch, NBN termination, phone system, CCTV recorder, UPS.
- Fibre backbone from the comms room to a wall-mounted cabinet in the warehouse and to any outbuildings.
- Warehouse cabinet with an industrial-rated switch feeding Cat6A runs to wireless access points on the ceiling, cameras, dock scanners and label printers.
- Cable containment on cable tray or in conduit, never draped over purlins, and kept well clear of power cables.
- Testing and certification of every copper link and OTDR testing of every fibre core, with a report you keep.
- Labelling and documentation so the next technician can find outlet 47 without tracing cables.
Wireless coverage in a steel shed
Racking, stock and steel walls kill Wi-Fi signal. Most warehouses need more access points than the floor plan suggests, and each one needs a cabled uplink. Plan the cabling for access points before the racking goes in, while ceiling access is easy. It is far cheaper than adding points once the site is full.
Mistakes we get called to fix
- Copper runs of 120 metres or more that “mostly work” until a summer heatwave.
- Data cable run in the same conduit as power, causing intermittent dropouts nobody can diagnose.
- Consumer-grade switches sitting on a shelf in a dusty warehouse instead of in a cabinet.
- No spare fibre cores, so a second building means a second trench.
- No labels and no test results, so every fault is a full-day investigation.
What it costs
As a guide, published 2026 NSW price guides put a commercial data point at about $220 to $600 installed, with certification testing at about $15 to $45 per point. Industrial sites with high mounting, long runs and cable tray tend to sit towards the top of that range. Fibre links between buildings depend heavily on distance, route, trenching and termination, so they are priced after a site visit rather than from a published range. Racks, patch panels and switches are quoted separately, and our data cabling cost guide lists the sources. Every Mac-Tek Telecom quote includes testing, certification and documentation as standard.
Local cabling contractors for St Marys and Penrith
Mac-Tek Telecom is based in Emu Heights, ten minutes from the Dunheved and St Marys industrial estates and twenty from Erskine Park. We have installed structured cabling and fibre for warehouses, workshops, schools and healthcare sites across St Marys, Penrith and the wider Nepean area, all to Australian standards and under NSW Master Licence No. 100034.
Frequently asked questions
Do I need a licensed cabler?
Yes. In Australia, anyone installing telecommunications cabling that connects to the network must hold an ACMA cabling registration, with the relevant endorsements for structured and optical fibre work. Ask to see it.
Can you cable a site that is already operating?
Yes. Most industrial work is done around operations, after hours or in stages so that the site never goes offline.
How long does fibre last?
Properly installed fibre has a service life of 25 years or more, and the same cable will carry future speed upgrades by changing the equipment at each end.
Planning a new site or a fit-out? Book a free site assessment and we will produce a cabling plan before the first rack goes in.
Related guide: Data cabling cost in Western Sydney (2026 guide)
