Articles: Low Voltage Design

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.

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.

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.

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

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

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.

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

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.

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

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.