Power Systems Technical Articles

Our experts continuously work on power systems problems, and we share solutions with Practical Reference Articles.

The main topics are earthing system modeling, power cable ratings, HV/LV electrical design, protective device coordination, and arc flash studies. We cover IEC and IEEE standards.

Join 23K+ engineers and get our latest technical articles direct to your inbox as they are releasedJayson Patrick

This field is for validation purposes and should be left unchanged.
Photo of Jayson Patrick for Technical Articles page about electrical power systems Design

Choose the article category

1 min read
Reference tables for diversity factors and energy demand from Wiring Rules AS/NZ 3000 for domestic and non-domestic installations.
11 mins read
Sheath bonding is one of the most important design aspects for high-voltage cable power transmission. Solidly, single-point, and cross-bonded systems are explained.
12 mins read
DC cable sizing has significant implications on a PV system's performance, total cost, and safety. Example calculations of Current Rating and Voltage Rise have been provided.
3 mins read
Soil electrical resistivity varies based on several factors. Use these tables to validate your soil measurements or devise a soil model without having measurements for preliminary earthing/grounding designs.
7 mins read
The AC resistance of a cable conductor is always larger than the DC resistance. The primary reasons are ‘skin effect’ and ‘proximity effect’. Equations and example calculations are provided in this article.
5 mins read
This article explains how to perform cable pulling tension and sidewall pressure calculations and also includes an example.
6 mins read
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.
2 mins read
Voltage Drop Limits per the Wiring Rules AS/NZS 3000 as well as rules of thumb to assist with electrical design. Includes AC and DC voltage drop or rise limits.
17 mins read
Explains the effects of the installation conditions and the bonding arrangement on the current rating of high voltage power cables.
Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors