Tunnel terminal in neutral bars as per AS/NZS 3000
A tunnel terminal is a terminal block design where the conductor is pushed into a small enclosed “tunnel” and clamped by a screw that bears on the conductor inside. They’re compact, keep wiring tidy, and let you get a lot of terminations into a...
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How to calculate maximum demand based on AS/NZS 3000
Maximum demand refers to the maximum electrical power or current drawn over a defined period within a system. It’s a critical design parameter: – Ensures circuits, consumer mains, distribution boards, and protective devices (e.g., switches, fuses) are adequately sized. – Prevents overloading of infrastructure...
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Additional protection by RCDs — What AS/NZS 3000 Clause 2.6.3 means for electricians
If you work with electrical installations in Australia, you’ll know that AS/NZS 3000 is the Wiring Rules we live and breathe. Within it, Clause 2.6.3 is one of the most important because it deals with additional protection by residual current devices, or RCDs. Over...
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How to Use AS/NZS 3000 Wiring Rules Effectively
Navigating the AS/NZS 3000 Wiring Rules can seem daunting at first, but understanding how to efficiently use its structure will make the process much simpler. There are two primary methods for finding specific information: using the index at the back of the document and...
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Solid Neutral Earthing – What Is The Importance?
In an earthed system, the neutral point of a generator or a transformer is directly connected to earth with no deliberate resistance or reactance between. No buffers, a direct connection. Any fault between phase and earth is instantly apparent to the system, and protective...
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AS/NZS 3010 – What Is The Purpose for Generating Sets?
AS/NZS 3010 is the Australian and New Zealand standard for electrical installations involving generating sets. The current edition was released in 2017, with an amendment in 2020 to refine some of the rules. This standard gives us guidance on the correct installation practices for...
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Low Voltage Metering Requirements per AS/NZS 3000
Low voltage metering is significant in the distribution of electricity in residential, commercial, and industrial applications. Metering is important because of proper measurement of electrical consumption and safety compliance using applied safety measures. The following article describes what metering requirements are according to the...
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What is High Voltage Commissioning? Explained!
High voltage commissioning is the act of testing, confirming, and validating the operation and safety of electrical systems with a rating above 1,000 volts. It is done prior to the energization of the system for normal operation. Imagine it as a pre-flight inspection of...
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Electrical Diagrams Types – How To Read Connection?
If you ever handled an electrical project—or maybe we’re just starting out—we’ve probably come across all kinds of electrical diagrams. They can look pretty confusing at first, but these drawings are really our best friends when it comes to designing, installing, or troubleshooting electrical...
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Derating Factor – Why is it important? Explained!
Derating factor, a term that is easily forgotten but very important if we want our electrical installations to function and endure safely. Derating is a simple matter of reducing the rated capacity of something such as a cable or a machine. Why? Because actual...
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