Our cable sizing tool is one of the more popular tools on the site. The tool enables cables to be sized in compliance with BS 7671 (the IEE Wiring Regulations...
Often document control is dictated by project requirements, for example a particular organisation may have an existing numbering system. Existing company...
IEC 60228 is the International Electrotechnical Commission's international standard on conductors of insulated cables. Among other things, it defines a...
Most installations involve some form of lightning protection system which is connected to an earth electrode. The function of the earth electrode is to...
The standard aims to consolidate AC and traction voltages within the industry and defines the following bands: band 1 - A.C. systems 100 V to 1...
This post is quick introduction and overview to different railway electrification voltages used in answer to a question sent in via email. While there...
It's been a busy few months on different projects or busy couple of decades depending on how I look at it. I can say that on the odd (frequent) occasion...
Current transformers (CTs) are used to convert high level currents to a smaller more reasonable level for use as inputs to protection relays and metering...
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.
Alternating current (a.c.) is the backbone of modern electrical power distribution. In this article I’ll be pulling some of the more important concepts...
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