The 5th edition saved me from a failed EICR just last week – the voltage drop table for 6mm² T&E was exactly what I needed.
Whitfield’s genius lies in translation. The Fifth Edition acts as a decoder ring, taking the abstract legalese of the regulations and converting it into: Electricians Guide Fifth Edition By John Whitfield
: It assumes only a basic knowledge of electrical theory, introducing technical matters with brief, easy-to-understand explanations and abundant diagrams. The 5th edition saved me from a failed