Guidance Note 6: Protection Against Overcurrent is a guide and reference manual on this key safety aspect of BS 7671. Ensure you are up to date with the changes to regulations around heating equipment and fuses to make sure your work complies.

Amendment 3 published on 5 January 2015 and comes into effect on 1 July 2015. All new installations from this point must comply with Amendment 3 to BS 7671:2008.