Switchboard Clearances – Key Guidelines for Safety
Ensuring proper Switchboard Clearances is crucial for maintaining safety and functionality in electrical installations. Switchboards must be located and installed with adequate space, ventilation, and accessibility to prevent overheating, facilitate easy maintenance, and ensure safe emergency evacuations. Switchboard Location – General Requirements Switchboards should...
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IPSD – Inverter Power Sharing Device in AS/NZS 4777.1:2024
An IPSD (Inverter Power Sharing Device) manages the distribution of power from a single PV system to various apartments or units. For example, a 40 kW PV system on a building’s roof can supply eight apartments. The IPSD controls how this energy is shared...
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Calculating the Current-Carrying Capacity of a Cable
The current-carrying capacity of a cable is calculated using AS/NZS 3008 and is a critical component in guaranteeing the effectiveness and safety of an electrical installation. It describes the highest continuous current a cable can handle under given circumstances without going beyond its temperature...
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Cable Selection and Voltage Drop Guidelines and Application
Cable Selection is an essential component of electrical installations, particularly in commercial and industrial settings where electrical system dependability and safety are crucial. A thorough set of guidelines for choosing cables for alternating voltages up to and including 0.6/1 kV under typical Australian installation...
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EV Supply Equipment EVSE – Key Updates in AS/NZS 4777.1:2024
EV Supply Equipment (EVSE) is essential for electric vehicles (EVs), influencing how they connect with the grid or other loads. It comes in two main types: DC EVSE and AC EVSE. Each type serves different needs and offers unique functionalities: DC EVSE This type...
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Ganged Devices – Key Updates Based on AS/NZS 4777.1:2024
One significant change involves ganged devices, particularly when isolating inverter systems. Previously, each inverter required separate isolation, which could be cumbersome. Now, if you have more than two Inverter Energy Systems (IESs) connected to a switchboard and those IESs are on a ganged switch,...
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Simplified Main Switch Configuration – AS/NZS 4777.1:2024
The latest update to AS/NZS 4777.1:2024 introduces important changes to how main switch is managed in inverter energy systems (IES). This new standard simplifies the setup, making it easier to manage and safer to operate. Here’s a closer look at how the new rules...
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Interface Protection – Embracing the New AS/NZS 4777.1:2024
The new AS/NZS 4777.1:2024 standard introduces a key change: interface protection now replaces central protection. This update is crucial for commercial and industrial PV systems, especially for those under 200 kVA. By raising the threshold and focusing on interface protection, the standard offers several...
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AS/NZS 4777.1:2024 Standard – What’s New?
The AS/NZS 4777.1:2024 standard is now released! It introduces several significant changes that simplify regulations, clarify definitions, and enhance system safety. Here’s a summary of the key updates and their implications: Removal of Stand-Alone Mode Definition The new standard does not recognize the stand-alone...
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