Commercial, Industrial, and Residential Electrical Contractor in Sydney

Blog | June 8th, 2018

As an electrical contractor in Sydney, the journeymen fronting this team are expected to work with a diverse range of powered systems. Given certain common factors, all electrical contractors deal with similar systems, but that’s like saying piloting a light aircraft is the same as flying a commercial airliner. Granted, cables and electrical fixtures are serviced and installed in all three trade divisions, but they each utilize very different approaches.

Working with Residential Electrical Systems 

The voltages used in a home vary between 120-Volts and 240-Volts. The country and electrical grid layout determine that value. Also, in the home, looks are important. The contractor is expected to cleanly install all electrical cables behind walls or above ceilings. Concealed in structure voids, the low voltage wiring feeds family-sized appliances.
The wiring used here is thin, flexible and sheathed in an insulating plastic. Likewise, the appliances and fixtures in a residence are substantially smaller than those used in a commercial wiring network.

The Commercial Power Hike 

More people, including customers, rely on this type of electrical equipment, so the wires and appliances grow in response to the higher load. Wires can still be concealed in walls. However, expect to see multiple wires held in special armoured channels, not flexible plastic sheathing. The electrical conduits need to be bent and coupled, so a high degree of mechanical expertise is required.

The appliances are larger, with catering equipment, commercial lighting systems, and other large equipment configurations dominating all power requirements. Additionally, the wiring gains another layer of mechanical protection.

Building Industrial Systems 

In larger commercial setups and industrial facilities, three-phase power is the preferred method of driving heavy equipment. Larger conduits, mostly made of metal, accompany cable trays and rectangular trunk lines. The environment here further dictates the features present in the wiring and equipment. For example, ingress protection housings are designed to protect sensitive electrical parts from water, chemicals, and dust.
Three-phase power efficiently drives motors and other heavy equipment, although special contractors are needed to control the three or four wire input lines so that they adjust to a particular loading scenario. For example, star-delta contactors are designed to switch automatically as motors start.

The installation procedures differ significantly between residential, commercial, and industrial electrical projects. The same can be said for the maintenance programs that support each class. Residential maintenance checks appliance functionality and wiring safety. As for the upper end of this work gamut, industrial equipment is more mechanically inclined. Thanks to these dangerously high industrial voltages, earthing systems and cable insulation are primary considerations, as are the mechanical elements that connect to those input lines.

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