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Home / Articles

Articles: Low Voltage Design

Voltage Drop Calculation Method with Examples

Equations and method with all steps for accurate voltage drop calculations including power factor, cable operating temperature, resistance, reactance, DC, 1-phase or 3-phase, balanced/unbalanced with calculation examples provided.

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November 9, 2021

Protective Earth Cable Sizing

This article explains how to properly size earth conductors for earth faults and includes the method, equations, constants you can use and worked examples to follow.

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October 22, 2021

Protection Coordination Requirements from Standards

There are several international Standards (AS/NZS, BS and IEC) which cover requirements for protection coordination of low voltage electrical systems and this article provides a summary of those as a reference.

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April 22, 2021

Voltage Rise Report Template

Download the attached PDF report template and use it for your solar connection applications.

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July 28, 2020

Cable Pulling Tension Calculations

This article explains how to perform cable pulling tension and sidewall pressure calculations and also includes an example.

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June 24, 2020

Automatic Maximum Demand Calculations

The new maximum demand module provides fast and accurate calculations for loads in accordance with rules from the Standards and for custom loads. An ingenious automatic phase balancing algorithm ensures maximum demand and phase imbalance are both minimised.

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May 16, 2020

Neutral Conductor Sizing

The neutral conductor is connected to the neutral point of a system and is intended to carry current under normal conditions.  The neutral conductor is

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April 14, 2020

Voltage Rise Calculations

Voltage rise can occur in solar PV systems on the AC side between the power inverters and network connection point. Voltage rise calculations are no different to those for voltage drop.

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April 2, 2020

Accurate voltage drop calculations

Accurately calculating voltage drop results in lower voltage drops which leads to smaller cable sizes and saves money.

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February 13, 2020

Understanding Earth Fault Loop Impedance

The purpose of this document is to provide a better understanding of Fault Loop Impedance, also referred to as Earth Fault Loop Impedance so that the requirements of AS/NZS 3000 Wiring Rules for safety, design, installation and testing of electrical installation may be met.

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May 29, 2019

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