Articles: Low Voltage Design

Cable Pulling Tension Calculations

Prior to installing cables it is recommended that the route be inspected.

This will 1. Avoid bends and pulling tensions that exceed the limits of the cables. 2. Avoid clearance issues and jamming of the cables inside conduits. 3. Tell you which direction of pull (forward or reverse) will be the best. 4. Assist with placement and pulling force requirements for winching or push/pull machinery.

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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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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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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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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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