What is the difference between BS7671 and IEC60364?

In the field of electrical installations and wiring regulations, two commonly referenced standards are BS7671 and IEC60364. Both these standards provide guidelines and regulations for the installation, design, and maintenance of electrical systems. However, there are some key differences between them that are important to understand.

Scope and Applicability

The first significant difference lies in the scope and applicability of these two standards. BS7671, also known as the IET Wiring Regulations, is a British standard and is primarily applicable within the United Kingdom. It provides guidance on the design, installation, inspection, testing, and certification of electrical installations. On the other hand, IEC60364, also known as the International Electrotechnical Commission Standard for Electrical Installations of Buildings, is an international standard that is applicable globally.

Technical Requirements

Another difference between these standards is related to the technical requirements they define. BS7671 focuses on promoting electrical safety and providing practical guidelines for achieving it. It covers various aspects such as conductor sizes, voltage drop, earthing arrangements, protection against electric shock, and overload protection. IEC60364, being an international standard, provides more general requirements and allows individual countries to adapt and modify them according to their specific needs and regulations.

Terminology and Documentation

The terminology and documentation used in BS7671 and IEC60364 also differ to some extent. BS7671 adopts British terminology and standards, whereas IEC60364 follows international terminology and units. This distinction is important for professionals working in different regions or countries, as they need to be familiar with the relevant terms and documentation used in their specific location.

In conclusion, while both BS7671 and IEC60364 serve as essential guidelines for electrical installations, there are notable differences between them. BS7671 is specific to the United Kingdom and focuses on safety and practicality, while IEC60364 is an international standard that can be adapted by individual countries. Understanding these differences is crucial for professionals in the electrical industry to ensure compliance with the relevant regulations and standards.