Five Shades of Yellow

The five things you need to know about Amendment 3

What you'll learn
The five key changes included in BS7671:2008 Amendment 3 and how they affect your business, including:

  • The new regulation numbering system
  • Change to protection
  • Reduction in Earth Loop Impedance Values
  • The addition of protective devices
  • The inclusion of model inspection, testing certificates and reports


Five Shades of Yellow




Five Shades of Yellow


NOTE: This white paper does not include all of the changes that are contained within Amendment 3 to BS 7671:2008. For more information refer to

It remains the individual’s responsibility to read, understand and comply with BS7671:2008 (Amendment 3) and any other regulations required.