Understanding RCDs and RCBOs – Electrical Safety
The RCDs are classified depending on the kind of leakage currents they can detect. Classifications determine the device suitable for an application. Type AC RCDs are intended to detect sinusoidal residual currents and are well suited for resistive, capacitive, and inductive loads. However, they...
View Now
What are the Electrical Standards in Australia?
Engineers operating in Australia and New Zealand must be up to the challenge of implementing the electrical standards and codes that help them in achieving safety, efficiency, and regulatory compliance in design, installation, and maintenance of electrical systems. Some of the standards include cabling,...
View Now
Exporting Switchboards Internationally – The Essential Steps
In the globalised world, where everything has gone global, you’ll find your switchboards being exported internationally and opening doors to markets on the most core essentials to grow and boost business. This paper takes you through some of the most critical steps when exporting...
View Now
Service Protection Device – Standards and Safety Guidelines
Service Protection Device is a safety component in electrical installations, designed to interrupt fault currents between the main switchboard and the network. It ensures the protection of electrical systems and sensitive equipment from voltage surges. Purpose • Protects electrical systems from faults and surges....
View Now
Earthing Study and Grounding – Why Is It Necessary?
An earthing study is a critical engineering analysis performed to evaluate the design and safety of a facility’s grounding system. The grounding system is crucial for the protection of both personnel and equipment. Several factors make an earthing study necessary: Safety A well-constructed grounding...
View Now
Cable Inductance Explained – A Practical Guide
Inductance is the property of a conductor that causes it to oppose changes in current. Whenever current flows through a conductor, it creates a magnetic field around it. If that current changes, the magnetic field also changes, which induces a voltage that resists the...
View Now
Cable Resistance Explained – What Every Electrician and Engineer Should Know
Cable resistance is the opposition that a conductor gives to the flow of electric current. No matter how “good” the conductor material is, it will never be perfect—there will always be some level of resistance. This resistance has three major effects: 1. It causes...
View Now
Maximum Cable Length for a CT – How to calculate?
To determine how long can we run a cable for a current transformer, we need to identify these key factors. 1. CT rated secondary current 2. Burden rating (CT Burden) 3. Cable resistance 4. Cable inductance 5. Number of connected devices 6. Allowable accuracy...
View Now
How Long You Can Run a Cable for a CT? Explained!
A current transformer is one that, in contrast to the considerably larger current flowing in the primary winding, creates a smaller, proportionate current in its secondary winding. The primary side is attached to the primary conductor transmitting the high current. Usually 5A or 1A,...
View Now
Positive and neutral wire – What are the differences?
What’s the actual difference between a positive wire and a neutral wire? In Australia, we usually call the positive the active, and once you understand how it works alongside the neutral, the whole system starts to make a lot more sense. The Active Wire...
View Now