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No matter your trade, electrical devices pose danger.
Over the years, distinct technologies have made it possible for engineers to work safely with high-voltage appliances and systems despite the hazards. In turn, electrical safety standards can be maintained.
From faulty parts to exposed live wiring, there are plenty of risks to working with live electronic appliances. For any trade professional, learning about the equipment you need to mitigate the risk is an essential and potentially life-saving task.
What are the most important electrical safety features and devices?
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Voltage testers
A non-contact voltage tester allows an electrician to detect the presence of a voltage. These handy devices enable the accurate and safe troubleshooting of faulty or seemingly broken circuits, preventing the need for wiring to be removed or adjusted initially. These devices can also test for grounding and assess whether the wire contains adequate voltage.
Additionally, these devices allow electricians to assess the situation without making physical contact with the live wires or current running through them. Multimeters work in a similar way, so it’s not unusual to see one in an electrician’s toolbox.
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Professional installation
The way a system is installed contributes significantly to its overall safety throughout its life.
When inexperienced electricians or even complete beginners attempt to install a property with complex devices, the risks are severe. Even though maintenance jobs might be less specialised, you should never compromise on the quality of the installation itself.
Quality tools should be used to ensure that each device will operate seamlessly after setup. For example, rather than leaving cables loose or risking faulty connections, professional engineers use cable crimpers to create secure and lasting connections between cables.
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Fuses
Fuses are an imperative safety measure designed to break the connection if too much current flows through a circuit. They look like a thin metal strip, usually constructed from zinc or copper, to keep the connection open during normal operation.
But if and when the electrical current surpasses the maximum set current within the fuse, the metal strip melts as soon as it overheats. The absence of the metal strip creates a gap in the circuit, stopping any more electricity from flowing through it.
With a fuse, many different types of household appliances can be protected against overheating and power surges, which are typical causes of electrical fires in the home.
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Diagnostics
Maintenance is a vital factor to consider for anyone working with electronic devices. Over time, components wear down with frequent use and might also become more susceptible to damp, cold or humid external conditions.
Electricians rely on a series of diagnostic devices to ensure that systems in various applications can be operated safely and continuously. For example, portable appliance testing (PAT) is carried out in most corporate settings and involves the examination of portable appliances and equipment. Some defects can be found after visual inspection.
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Surge protection
Surge protection devices work in a similar way to a fuse but rely on different technologies. A surge is a sudden and extremely high wave of current, voltage or power in a circuit. When this occurs in a household environment, usually from lightning during storms, it can damage or destroy electronic devices.
One of the most dangerous and likely consequences of a surge is an electrical fire. Surge protection devices usually take the form of either voltage limiting components, like metal oxide varistors, or voltage switching components like spark gaps.
With the right equipment, electricians can keep themselves safe at work. Additionally, technologies reduce the risk of electrical fire in numerous settings, promoting overall safety for consumers and corporations too.
